Agnosia
Loss of the ability to comprehend the meaning or recognize the importance of various forms of stimulation that cannot be attributed to impairment of a primary sensory modality. Tactile agnosia is characterized by an inability to perceive the shape and nature of an object by touch alone, despite unimpaired sensation to light touch, position, and other primary sensory modalities.
Gerstmann Syndrome
A disorder of cognition characterized by the tetrad of finger agnosia, dysgraphia, DYSCALCULIA, and right-left disorientation. The syndrome may be developmental or acquired. Acquired Gerstmann syndrome is associated with lesions in the dominant (usually left) PARIETAL LOBE which involve the angular gyrus or subjacent white matter. (From Adams et al., Principles of Neurology, 6th ed, p457)
Kinesics
Kluver-Bucy Syndrome
A neurobehavioral syndrome associated with bilateral medial temporal lobe dysfunction. Clinical manifestations include oral exploratory behavior; tactile exploratory behavior; hypersexuality; BULIMIA; MEMORY DISORDERS; placidity; and an inability to recognize objects or faces. This disorder may result from a variety of conditions, including CRANIOCEREBRAL TRAUMA; infections; ALZHEIMER DISEASE; PICK DISEASE OF THE BRAIN; and CEREBROVASCULAR DISORDERS.
Occipital Lobe
Prosopagnosia
The inability to recognize a familiar face or to learn to recognize new faces. This visual agnosia is most often associated with lesions involving the junctional regions between the temporal and occipital lobes. The majority of cases are associated with bilateral lesions, however unilateral damage to the right occipito-temporal cortex has also been associated with this condition. (From Cortex 1995 Jun;31(2):317-29)
Aphasia
A cognitive disorder marked by an impaired ability to comprehend or express language in its written or spoken form. This condition is caused by diseases which affect the language areas of the dominant hemisphere. Clinical features are used to classify the various subtypes of this condition. General categories include receptive, expressive, and mixed forms of aphasia.
Neuropsychological Tests
Visual Perception
Temporal Lobe
Magnetic Resonance Imaging
Gorilla gorilla
Hominidae
Pongo pygmaeus
Pan paniscus
The pygmy chimpanzee, a species of the genus Pan, family HOMINIDAE. Its common name is Bonobo, which was once considered a separate genus by some; others considered it a subspecies of PAN TROGLODYTES. Its range is confined to the forests of the central Zaire basin. Despite its name, it is often of equal size to P. troglodytes.
Pongo
Memories are made of this: the effects of time on stored visual knowledge in a case of visual agnosia. (1/133)
We report the effects of the passage of time on the longterm visual knowledge for objects in a patient with visual agnosia (H.J.A.). The naming of real objects was found to have improved, although this was not associated with any change in H.J.A.'s basic perceptual abilities which were stable over a 16-year period. The improvement in object naming was attributed to better use of non-contour-based visual information (such as surface detail and depth cues). In addition, we demonstrate a deterioration in H.J.A.'s long-term memory for the visual properties of objects, and argue that this has occurred as a result of his having impaired perceptual input. The deterioration was only apparent in drawing from memory and in the verbal descriptions of items; with forced-choice testing, H.J.A. operated at ceiling; we propose that current tests of visual imagery may not be sufficiently sensitive to detect subtle impairments of visual memory. Our findings can be taken to indicate that perceptual and memorial processes are not functionally independent, but are linked in an interactive manner. (+info)Topographical disorientation: a synthesis and taxonomy. (2/133)
Over the last century, several dozen case reports have presented 'topographically disoriented' patients who, in some cases, appear to have selectively lost their ability to find their way within large-scale, locomotor environments. A review is offered here that has as its aim the creation of a taxonomy that accurately reflects the behavioural impairments and neuroanatomical findings of this literature. This effort is guided by an appreciation of the models of normative way-finding offered by environmental psychology and recent neuroscience research. It is proposed that several varieties of topographical disorientation exist, resulting from damage to distinct neuroanatomical areas. The particular pattern of impairments that patients evidence is argued to be consonant with the known functions of these cortical regions and with recent neuroimaging results. The conflicting claims of previous reviews of this area are also considered and addressed. (+info)Unconscious letter discrimination is enhanced by association with conscious color perception in visual form agnosia. (3/133)
Adaptive behavior guided by unconscious visual cues occurs in patients with various kinds of brain damage as well as in normal observers, all of whom can process visual information of which they are fully unaware [1] [2] [3] [4] [5] [6] [7] [8]. Little is known on the possibility that unconscious vision is influenced by visual cues that have access to consciousness [9]. Here we report a 'blind' letter discrimination induced through a semantic interaction with conscious color processing in a patient who is agnosic for visual shapes, but has normal color vision and visual imagery. In seeing the initial letters of color names printed in different colors, it is normally easier to name the print color when it is congruent with the initial letter of the color name than when it is not [10]. The patient could discriminate the initial letters of the words 'red' and 'green' printed in the corresponding colors significantly above chance but without any conscious accompaniment, whereas he performed at chance with the reverse color-letter mapping as well as in standard tests of letter reading. We suggest that the consciously perceived colors activated a representation of the corresponding word names and their component letters, which in turn brought out a partially successful, unconscious processing of visual inputs corresponding to the activated letter representations. (+info)Receptive amusia: evidence for cross-hemispheric neural networks underlying music processing strategies. (4/133)
Perceptual musical functions were investigated in patients suffering from unilateral cerebrovascular cortical lesions. Using MIDI (Musical Instrument Digital Interface) technique, a standardized short test battery was established that covers local (analytical) as well as global perceptual mechanisms. These represent the principal cognitive strategies in melodic and temporal musical information processing (local, interval and rhythm; global, contour and metre). Of the participating brain-damaged patients, a total of 69% presented with post-lesional impairments in music perception. Left-hemisphere-damaged patients showed significant deficits in the discrimination of local as well as global structures in both melodic and temporal information processing. Right-hemisphere-damaged patients also revealed an overall impairment of music perception, reaching significance in the temporal conditions. Detailed analysis outlined a hierarchical organization, with an initial right-hemisphere recognition of contour and metre followed by identification of interval and rhythm via left-hemisphere subsystems. Patterns of dissociated and associated melodic and temporal deficits indicate autonomous, yet partially integrated neural subsystems underlying the processing of melodic and temporal stimuli. In conclusion, these data contradict a strong hemispheric specificity for music perception, but indicate cross-hemisphere, fragmented neural substrates underlying local and global musical information processing in the melodic and temporal dimensions. Due to the diverse profiles of neuropsychological deficits revealed in earlier investigations as well as in this study, individual aspects of musicality and musical behaviour very likely contribute to the definite formation of these widely distributed neural networks. (+info)Illusory limb movements in anosognosia for hemiplegia. (5/133)
To clarify the relation between anosognosia for hemiplegia and confabulation, 11 patients with acute right cerebral infarctions and left upper limb hemiparesis were assessed for anosognosia for hemiplegia, illusory limb movements (ILMs), hemispatial neglect, asomatognosia, and cognitive impairment. Five of 11 patients had unequivocal confabulation as evidenced by ILMs. The presence of ILMs was associated with the degree of anosognosia (p = 0.002), with hemispatial neglect (p<0.05), and with asomatognosia (p<0.01). The results confirm that a strong relation exists between anosognosia for hemiplegia and confabulations concerning the movement of the plegic limb. There is also a strong relation between ILMs and asomatognosia. (+info)Hemianopic colour blindness. (6/133)
A man developed cortical blindness after cerebral infarction in the distribution of both posterior cerebral arteries. When he recovered from this condition, he was found to be colour blind in the left visual field, but not in the right. This unusual situation resulted in apparently contradictory performances on hemifield and free-field tasks of colour discrimination, naming, and recognition. The contradictions may be explained by interhemispheric competition between a hemisphere which could discriminate colours and a hemisphere which was colour blind. (+info)Patterns of music agnosia associated with middle cerebral artery infarcts. (7/133)
The objective of the study is to evaluate if the rupture of an aneurysm located on the middle cerebral artery (MCA) results in disorders of music recognition. To this aim, 20 patients having undergone brain surgery for the clipping of a unilateral left (LBS), right (RBS) or bilateral (BBS) aneurysm(s) of the MCA and 20 neurologically intact control subjects (NC) were evaluated with a series of tests assessing most of the abilities involved in music recognition. In general, the study shows that a ruptured aneurysm on the MCA that is repaired by brain surgery is very likely to produce deficits in the auditory processing of music. The incidence of such a deficit was not only very high but also selective. The results show that the LBS group was more impaired than the NC group in all three tasks involving musical long-term memory. The study also uncovered two new cases of apperceptive agnosia for music. These two patients (N.R. and R.C.) were diagnosed as such because both exhibit a clear deficit in each of the three music memory tasks and both are impaired in all discrimination tests involving musical perception. Interestingly, the lesions overlap in the right superior temporal lobe and in the right insula, making the two new cases very similar to an earlier case report. Altogether, the results are also consistent with the view that apperceptive agnosia results from damage to right hemispheric structures while associative agnosia results from damage to the left hemisphere. (+info)Time-dependent activation of parieto-frontal networks for directing attention to tactile space. A study with paired transcranial magnetic stimulation pulses in right-brain-damaged patients with extinction. (8/133)
Tactile extinction has been interpreted as an attentional disorder, closely related to hemineglect, due to hyperactivation of the unaffected hemisphere, resulting in an ipsilesional attentional bias. Paired transcranial magnetic stimulation (TMS) techniques, with a subthreshold conditioning stimulus (CS) followed at various interstimulus intervals (ISIs) by a suprathreshold test stimulus (TS), are useful for investigating intracortical inhibition and facilitation in the human motor cortex. In the present work, we investigated the effects of paired TMS over the posterior parietal and frontal cortex of the unaffected hemisphere in a group of eight right-brain-damaged patients with tactile extinction who were carrying out a bimanual tactile discrimination task. The aim of the study was to verify if paired TMS could induce selective inhibition or facilitation of the unaffected hemisphere depending on the ISI, resulting, respectively, in an improvement and a worsening of contralesional extinction. In addition, we wanted to investigate if the effects of parietal and frontal TMS on contralesional extinction appeared at different intervals, suggesting time-dependent activation in the cortical network for the processing of tactile spatial information. Paired TMS stimuli with a CS and a TS, separated by two ISIs of 1 and 10 ms, were applied over the left parietal and frontal cortex after various intervals from the presentation of bimanual cutaneous stimuli. Single-test parietal TMS stimuli improved the patients' performance, whereas paired TMS had distinct effects depending on the ISI: at ISI = 1 ms the improvement in extinction was greater than that induced by single-pulse TMS; at ISI = 10 ms we observed worsening of extinction, with complete reversal of the effects of single-pulse TMS. Compared with TMS delivered over the frontal cortex, parietal TMS improved the extinction rate in a time window that began earlier. These findings shed further light on the mechanism of tactile extinction, suggesting relative hyperexcitability of the parieto-frontal network in the unaffected hemisphere, which is amenable to study and modulation by paired TMS pulses. In addition, the results show time-dependent processing of tactile spatial information in the parietal and frontal cortices, with a bimodal distribution of activity, at least in the attentional network of the unaffected hemisphere. (+info) Agnosia refers to a type of neurological disorder where an individual experiences difficulty in recognizing and identifying objects, voices, or other sensory stimuli. This condition can affect one or more senses, such as vision, hearing, touch, taste, or smell. Agnosia is often caused by damage to specific areas of the brain, including the occipital lobe (responsible for processing visual information), the temporal lobe (involved in auditory processing), and the parietal lobe (responsible for spatial awareness and sensory integration).
There are several subtypes of agnosia, each with distinct symptoms:
1. Visual agnosia: Difficulty recognizing objects, colors, or shapes.
2. Auditory agnosia: Inability to recognize familiar sounds or voices.
3. Tactile agnosia: Difficulty identifying objects by touch.
4. Olfactory agnosia: Loss of the ability to smell.
5. Gustatory agnosia: Inability to taste or identify different flavors.
6. Hyperagnosia: Excessive sensitivity to stimuli, leading to over-recognition of objects and excessive memory for details.
7. Hypoagnosia: Under-recognition of objects, leading to difficulty identifying familiar items.
Agnosia can be caused by various factors, such as stroke, traumatic brain injury, infections, neurodegenerative diseases (e.g., Alzheimer's disease, Parkinson's disease), and developmental disorders (e.g., autism spectrum disorder). Treatment options depend on the underlying cause of the agnosia and may include rehabilitation therapies, medications, or surgery.
In summary, agnosia is a neurological condition characterized by difficulty in recognizing objects, voices, or other sensory stimuli due to damage to specific areas of the brain. It can affect one or more senses and can be caused by various factors. Treatment options vary depending on the underlying cause of the disorder.
Gerstmann syndrome, also known as Gerstmann-Straussler-Scheinker disease (GSS), is a rare neurodegenerative disorder that affects the brain and spinal cord. It is caused by mutations in the PRNP gene, which codes for the prion protein. The disorder is characterized by progressive loss of cognitive and motor functions, seizures, and changes in personality.
The symptoms of Gerstmann syndrome usually begin in adulthood and can vary in severity. Affected individuals may experience memory loss, confusion, difficulty with language, and problems with coordination and balance. As the disease progresses, they may also experience seizures, weakness, and paralysis.
Gerstmann syndrome is diagnosed through a combination of clinical evaluation, laboratory tests, and imaging studies. There is no cure for the disorder, but various treatments can help manage its symptoms. These may include medications to control seizures and muscle spasms, physical therapy to maintain mobility and strength, and speech and language therapy to improve communication skills.
The progression of Gerstmann syndrome is variable, with some individuals experiencing a rapid decline in cognitive and motor functions while others may remain relatively stable for several years. The mean age of death is in the mid-50s, but some individuals may live into their 70s or 80s.
The exact prevalence of Gerstmann syndrome is not known, but it is estimated to affect approximately one in a million people worldwide. It is considered a rare disorder and is often misdiagnosed as other neurodegenerative conditions such as Alzheimer's disease or Parkinson's disease.
Overall, Gerstmann syndrome is a rare and debilitating neurodegenerative disorder that affects cognitive and motor functions, and its diagnosis and management can be challenging for healthcare providers.
Kluver-Bucy syndrome is a rare neurological disorder that results from damage to the temporal lobe, particularly the hippocampus and parahippocampal gyrus, as well as other parts of the brain. The syndrome was first described by psychiatrist and neurologist Kurt Kluver and neurologist Paul Bucy in 1939.
The main symptoms of Kluver-Bucy syndrome include:
1. Focal seizures, which may be simple or complex partial seizures.
2. Memory loss and difficulty with learning new information.
3. Difficulty with recognizing objects and faces.
4. Increased libido and sexual interest in inappropriate situations.
5. Hyperorality, meaning an excessive interest in food and eating.
6. Hypermetria, which is the increased size of handwriting or other motor skills.
7. Hemiparesis, which is weakness or paralysis of one side of the body.
8. Visual field defects, including blind spots.
9. Difficulty with speech and language processing.
10. Increased aggression and irritability.
Kluver-Bucy syndrome can be caused by various conditions that damage the brain, such as traumatic brain injury, stroke, cerebral vasculitis, or neurodegenerative diseases like Alzheimer's disease or Pick's disease. It is important to note that Kluver-Bucy syndrome is a relatively rare condition and should be differentiated from other neurological disorders that may present with similar symptoms, such as frontotemporal dementia or progressive supranuclear palsy.
There is no cure for Kluver-Bucy syndrome, but various treatments can help manage its symptoms, including anticonvulsants for seizures, physical therapy to improve motor function, and behavioral therapy to address aggression and other behavioral issues. The prognosis for individuals with Kluver-Bucy syndrome is generally poor, with a significant decline in cognitive and functional abilities over time. However, the condition can be challenging to diagnose, and some individuals may experience a relatively mild course of symptoms or even partial recovery with treatment.
Prosopagnosia is a neurological disorder that affects an individual's ability to recognize and remember faces. Also known as face blindness, it is a condition where individuals have difficulty recognizing familiar faces, including those of friends, family members, and even their own reflection in the mirror.
The term "prosopagnosia" comes from the Greek words "prosopon," meaning "face," and "agnosia," meaning "not knowing." It is a rare condition, estimated to affect only about 2% of the population.
People with prosopagnosia may experience a range of symptoms, including:
* Difficulty recognizing familiar faces, both in person and in photographs
* Trouble distinguishing between different faces, especially when the faces are not well-lit or are seen from a distance
* Memory lapses for faces, making it difficult to remember past encounters with individuals
* Confusion between faces of people they know and those they do not know
* Difficulty recognizing their own face in a mirror or in photographs
The exact cause of prosopagnosia is not fully understood, but research suggests that it may be related to abnormalities in the brain's face-processing centers. Some studies suggest that the condition may be hereditary, while others point to possible causes such as stroke, head injury, or neurodegenerative diseases like Alzheimer's or Parkinson's.
There is currently no cure for prosopagnosia, but there are strategies and techniques that can help individuals with the condition manage their symptoms. These may include:
* Using alternative methods of identification, such as voice recognition or clothing style
* Creating associations between faces and other distinguishing features, such as hairstyle or body shape
* Developing a system for keeping track of names and faces, such as using mnemonic devices or keeping a face database
* Seeking support from family, friends, and mental health professionals to cope with the social and emotional challenges of living with prosopagnosia.
Overall, prosopagnosia is a complex and poorly understood condition that can significantly impact an individual's daily life and relationships. Research into its causes and effective treatments is ongoing, offering hope for those affected by the condition.
Aphasia is a condition where an individual experiences difficulty with language processing and communication, often as a result of brain damage or disease. It can affect the ability to speak, understand spoken language, read, and write. Aphasia can be caused by various conditions such as stroke, traumatic brain injury, brain tumors, and neurodegenerative diseases like Alzheimer's and Parkinson's.
There are several types of aphasia, including:
1. Broca's aphasia: Characterized by difficulty speaking in complete sentences and using correct grammar.
2. Wernicke's aphasia: Characterized by difficulty understanding spoken language and speaking in complete sentences.
3. Global aphasia: Characterized by a severe impairment of all language abilities.
4. Primary progressive aphasia: A rare form of aphasia that is caused by neurodegeneration and worsens over time.
Treatment for aphasia typically involves speech and language therapy, which can help individuals with aphasia improve their communication skills and regain some of their language abilities. Other forms of therapy, such as cognitive training and physical therapy, may also be helpful.
It's important to note that while aphasia can significantly impact an individual's quality of life, it does not affect their intelligence or cognitive abilities. With appropriate treatment and support, individuals with aphasia can continue to lead fulfilling lives and communicate effectively with others.
Agnosia
... apperceptive visual agnosia and associative visual agnosia. Individuals with apperceptive visual agnosia display the ability to ... Visual agnosia is a broad category that refers to a deficiency in the ability to recognize visual objects. Visual agnosia can ... Speech agnosia, or auditory verbal agnosia, refers to "an inability to comprehend spoken words despite intact hearing, speech ... The term 'agnosia' comes from the Ancient Greek ἀγνωσία (agnosia), "ignorance", "absence of knowledge". It was introduced by ...
Apperceptive agnosia
Agnosia Associative visual agnosia Aphasia Visual agnosia Visual space Patient DF David Andrewes (13 May 2013). Neuropsychology ... Visual agnosia may be present in early stages of AD and can often act as an indicator of AD. Apperceptive agnosia results from ... Olfactory agnosia is when a patient can smell something, but they can't identify what the smell is. Like other forms of agnosia ... Apperceptive agnosia is a failure in recognition that is due to a failure of perception. In contrast, associative agnosia is a ...
Agnosia microta
... is a species of moth of the family Sphingidae first described by George Hampson in 1907. It is known from India ...
Integrative agnosia
A poor score on the Efron shape test will indicate form agnosia, as opposed to integrative agnosia. A good score on the Efron ... Integrative agnosia is a sub-disease of agnosia, meaning the lack of integrating perceptual wholes within knowledge. ... When determining whether a patient has form agnosia or integrative agnosia, an Efron shape test can be performed. ... Due to Integrative Agnosia, the patients take information from a top-down manner, using stored knowledge to retrieve an objects ...
Visual agnosia
Broadly, visual agnosia is divided into apperceptive and associative visual agnosia. Apperceptive agnosia is failure of object ... There are two types of visual agnosia: apperceptive agnosia and associative agnosia. Recognition of visual objects occurs at ... Orientation agnosia: an inability to judge or determine orientation of objects. Pantomime agnosia: an inability to understand ... Associative visual agnosia, impaired object identification. Individuals with associative agnosia cannot give a meaning to a ...
Finger agnosia
Any damage to that blood supply would cause symptoms of both acalculia and finger agnosia. As in many other agnosias, those ... There is no known treatment for finger agnosia. Typically, finger agnosia does not present difficulties in daily life. In most ... Persons with finger agnosia are able to name and point to a finger when able to use visual guidance, but will have more errors ... Finger agnosia, first defined in 1924 by Josef Gerstmann, is the loss in the ability to distinguish, name, or recognize the ...
Agnosia orneus
... is a species of moth of the family Sphingidae first described by George Hampson in 1907. It is known from India ...
Auditory agnosia
... and labelled general auditory agnosia as pre-phonemic auditory agnosia and word deafness as post-phonemic auditory agnosia. ... Auditory agnosia is a form of agnosia that manifests itself primarily in the inability to recognize or differentiate between ... Auditory agnosia (with the exception of non-verbal auditory agnosia and amusia) is strongly dependent on damage to both ... In a review of the auditory agnosia literature, Ulrich re-named this disorder as non-verbal auditory agnosia (although sound ...
Agnosia (moth)
Agnosia microta (Hampson 1907) Agnosia orneus (Westwood 1847) Savela, Markku. "Agnosia Rothschild & Jordan, 1903". Lepidoptera ... Agnosia is a genus of moths in the family Sphingidae first described by Walter Rothschild and Karl Jordan in 1903. ... Data related to Agnosia at Wikispecies v t e (Articles with short description, Short description is different from Wikidata, ...
Agnosia (film)
Agnosia is a Spanish baroque retro-futuristic thriller directed by Eugenio Mira and written by Antonio Trashorras. A young ... Efm 2010: Agnosia Astounds. Archived June 12, 2010, at the Wayback Machine Images And Details From Eugenio Mira's Sumptuous ... at the Wayback Machine Agnosia at IMDb (Webarchive template wayback links, All articles with dead external links, Articles with ... woman, Joana Prats, suffers from agnosia, a strange, primary visual disease that is one of the neuropsychological disorders of ...
Associative visual agnosia
Visual object agnosia (or semantic agnosia) is the most commonly encountered form of agnosia. The clinical "definition" of the ... Associative visual agnosia is a form of visual agnosia. It is an impairment in recognition or assigning meaning to a stimulus ... Associative visual agnosia refers to a subtype of visual agnosia, which was labeled by Lissauer (1890), as an inability to ... An agnosia that affects hearing, auditory sound agnosia, is broken into subdivisions based on level of processing impaired, and ...
Social-emotional agnosia
... , also known as emotional agnosia or expressive agnosia, is the inability to perceive facial ... Unlike patients of social-emotional agnosia, people with Klüver-Bucy syndrome also tend to demonstrate visual agnosia ( ... Symptoms of this agnosia can vary depending on the area of the brain affected. Social-emotional agnosia often occurs in ... Typically this agnosia is only found in people with bilateral amygdala damage; that is damage to amygdala regions in both ...
Auditory verbal agnosia
... (AVA) is not the same as auditory agnosia; patients with (nonverbal) auditory agnosia have a relatively ... Auditory verbal agnosia is rarely diagnosed in its pure form. Auditory verbal agnosia can both present as the result of acute ... Auditory verbal agnosia is rarely diagnosed in its pure form. Auditory verbal agnosia can present as the result of acute damage ... Auditory verbal agnosia is the inability to distinguish phonemes. In some patients with unilateral auditory verbal agnosia, ...
Autotopagnosia
Of all the agnosias, visual agnosia is the most common subject of investigation because it is easiest to assess and has the ... Pick's studies introduced autotopagnosia and other category specific agnosias, such as visual and tactile agnosia. Josef ... Finger agnosia: An inability to name the fingers, move a specific finger upon being asked, and/or recognize which finger has ... Autotopagnosia is a form of agnosia, characterized by an inability to localize and orient different parts of the body. The ...
Astereognosis
... it seems to be closely related to tactile agnosia (impairment connected to one hand). Tactile agnosia observations are rare and ... Individuals with tactile agnosia may be able to identify the name, purpose, or origin of an object with their left hand but not ... Astereognosis (or tactile agnosia if only one hand is affected) is the inability to identify an object by active touch of the ... As opposed to agnosia, when the object is observed visually, one should be able to successfully identify the object. ...
Barbara Goenaga
ISBN 978-1-4494-0813-8. Fez, Desirée de (28 June 2010). "Agnosia. Para incondicionales del romanticismo". Fotogramas. Abuín, ...
Mirrored-self misidentification
TH's mirror agnosia accounts for the development of the delusional idea. Because not all patients with mirror agnosia develop ... Patients with mirror agnosia are unable to understand how mirrors work; they believe the mirror represents a separate space, ... Patient TH was in the early stages of dementia and was affected by mirror agnosia. While TH was looking into a mirror, the ... When paired with mirror agnosia or impaired facial processing, damage in any of these areas of the right hemisphere of the ...
Prosopagnosia
Farah, Martha J. (1990). Visual agnosia: disorders of object recognition and what they tell us about normal vision. Cambridge: ... Unilateral left temporo-occipital lesions result in object agnosia, but spare face recognition processes, although a few cases ... Farah, Martha J. (2004). Visual agnosia. Cambridge, Mass: MIT Press. ISBN 978-0-262-56203-4. OCLC 474679492. Nancy L. Mindick ( ... of human individuals Social-emotional agnosia Super recognisers Temporal lobe epilepsy Thatcher effect Visual agnosia ...
Simultanagnosia
Agnosia Farah, M.J. (1990). "Visual agnosia". Disorders of object recognition and what they tell us about normal vision. ...
Inferior longitudinal fasciculus
Visual agnosia-prosopagnosia. A clinicopathologic correlation. Arch Neurol; 30: 307-10. Meadows, J.C., 1974. The anatomical ... Lesion localization in visual agnosia. In: Kertesz A, editor. Localization and neuroimaging in neuropsychology. San Diego: ... disorders linked to this white matter tract are disorders with perturbed visual perception such as associative visual agnosia, ...
Speech perception
Speech agnosia: Pure word deafness, or speech agnosia, is an impairment in which a person maintains the ability to hear, ... Agnosia is "the loss or diminution of the ability to recognize familiar objects or stimuli usually as a result of brain damage ... There are no known treatments that have been found, but from case studies and experiments it is known that speech agnosia is ... "Definition of AGNOSIA". www.merriam-webster.com. Retrieved 2017-12-15. Howard, Harry (2017). "Welcome to Brain and Language". ...
Color task
Achromatopsia Color agnosia Color anomia Cole, Barry L (1972). "The handicap of abnormal colour vision". Clinical and ...
Achromatopsia
Color agnosia involves having difficulty recognizing colors, while still being able to perceive them as measured by a color ... Burns, MS (2004). "Clinical management of agnosia". Top Stroke Rehabil. 11 (1): 1-9. doi:10.1310/N13K-YKYQ-3XX1-NFAV. PMID ... Agnosia, Channelopathies, Color vision, Rare diseases, Visual disturbances and blindness, Visual perception, Visual system). ...
Language module
Bauer, R. M., & Zawacki, T. (2000). Auditory Agnosia and Amusia. In M.J. Farah and T.E. Feinberg (Eds.), Patient-Based ... Perception of dynamic acoustic patterns by an individual with unilateral verbal auditory agnosia. Brain and Language, 73, 442- ...
Jason Walter Brown
Apraxia and Agnosia, Thomas, Springfield. Brown, J. W. (1977) Mind. Brain and Consciousness, Academic, New York. Brown, J. W. ( ... In 1972, he published his first book, Aphasia, Apraxia, and Agnosia. In 1976, he received a fellowship from the Foundations ... Brown, J. W. (1988) Agnosia and Apraxia (Ed.) Erlbaum, New Jersey. Brown, J. W. (1989) Neuropsychology of Perception, Erlbaum, ...
Surface dyslexia
Aphasia Agnosia Carlson, Neil (2010). Psychology the Science of Behaviour [4th Canadian ed.]. Toronto, On. Canada: Pearson ...
Visual object recognition (animal test)
There are two broad categories of visual object agnosia: apperceptive and associative. When object agnosia occurs from a lesion ... these patients demonstrate that they can perceive but not recognize.Integrative agnosia(a subtype of associative agnosia) is ... Agnosia-en] is a rare occurrence and can be the result of a stroke, dementia, head injury, brain infection, or hereditary. ... Both of these agnosias can affect the pathway to object recognition, like Marr's Theory of Vision. More specifically unlike ...
Color blindness
They are forms of visual agnosia. Monochromacy is the condition of possessing only a single channel for conveying information ...
Language processing in the brain
An fMRI study of a patient with impaired sound recognition (auditory agnosia) due to brainstem damage was also shown with ... Finally, as mentioned earlier, an fMRI scan of an auditory agnosia patient demonstrated bilateral reduced activation in the ... doi:10.1016/s0364-0213(01)00050-7. Ulrich G (May 1978). "Interhemispheric functional relationships in auditory agnosia. An ... auditory agnosia), who was shown with reduced bilateral activation in areas hR and aSTG but with spared activation in the mSTG- ...
Music-specific disorders
... "agnosia" refers to a loss of knowledge. Acquired music agnosia is the "inability to recognize music in the absence of sensory, ... Music agnosia and auditory agnosia (2003) Annals of the New York Academy of Sciences 999:50-57 Oliver Sacks on Amusia Online ... auditory sound agnosia, and receptive amusia occur simultaneously, the state is called auditory agnosia" (Satoh 2007). However ... Brain 125: 238-251 Peretz I, Can we lose memory for music? A case of music agnosia in a nonmusician (1996). J Cogn Neuroscience ...
Agnosia | National Institute of Neurological Disorders and Stroke
... also known as primary visual agnosia, monomodal visual amnesia, and visual amnesia) is a neurological disorder characterized by ... What is agnosia? Agnosia (also known as primary visual agnosia, monomodal visual amnesia, and visual amnesia) is a neurological ... Where can I find more information about agnosia? The following organizations and resources help people living with agnosia and ... If agnosia is caused by an underlying disorder, treatment of that disorder may reduce symptoms and help prevent further brain ...
Interventions - AGNOSIA
There is no specific treatment of agnosia but when possible, the cause of the agnosia is often treated. In other words, damage ... especially auditory and tactile agnosias. In addition, controlled treatment studies with individuals with agnosia are rare. ... Few individuals with agnosia regain sensory functioning but most make gains within the first few months or year of diagnosis ( ... Hence, the goal of treatment and OT is to develop remedial and compensatory approaches to enable the individual with agnosia to ...
Comment on Agnosia
The form agnosia is the inability to discriminate against the basic geometric shapes, the integrative agnosia is the absence of ... There are the semantic agnosia of the (hardly visible) semantic access agnosia. ... Agnosia. 03.17.2013 Author: admin Category: Disorders 0 Comment » Comes from the Greek: agnôsia. It is an etymological ... The agnosia of transformation: the patient may describe an object that from his point of view (it can not describe it as if he ...
Agnosia | Signs, Symptoms, Support
Dealing with Ableist reactions to Visual Agnosia. Visual Agnosia is rare, so rare that I found out last year when I was 58 that ... Has anyone experienced agnosia during an extreme flare up? Late last year I was unable to recognize myself in the mirror for a ... The primary issue I have with visual agnosia is dealing with ableist individuals who either doubt the veracity of my visual ... My high functioning autism renders me light sensitive and with visual agnosia. How should I deal with people who dont believe ...
Qué significa la palabra agnosia visual-espacial ? - BioDic
This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience ...
HealthlinkUSA - Discussion Forum for Treatments, Symptoms and Causes of 700 health conditions & diseases.
Electrophysiological correlates of associative visual agnosia lesioned in the ventral pathway<...
Visual agnosia has been well studied by anatomical, neuropsychological and neuroimaging studies. However, functional changes in ... N2 - Visual agnosia has been well studied by anatomical, neuropsychological and neuroimaging studies. However, functional ... AB - Visual agnosia has been well studied by anatomical, neuropsychological and neuroimaging studies. However, functional ... abstract = "Visual agnosia has been well studied by anatomical, neuropsychological and neuroimaging studies. However, ...
Memory | MedlinePlus
Search Results - Catholic Theological Union
This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience ...
Cognitive Atlas
finger agnosiaDISORDER. An agnosia that is a loss of the ability to distinguish the fingers on the hand.. Definition ... An agnosia that is a loss of the ability to distinguish the fingers on the hand.. ... The following diorders are kind of finger agnosia:. None. ADD DISORDER RELATIONSHIP. Type* finger agnosia is a kind of , ...
Lynch syndrome - About the Disease - Genetic and Rare Diseases Information Center
HIV-associated Neurocognitive Disorder (HAND): Overview, Pathophysiology, Epidemiology
Help us shape the 2020 Dementia Care & Caregiving Summit | National Institute on Aging
Frontiers | The Role of Finger Representations and Saccades for Number Processing: An fMRI Study in Children
NICHD/NIDCD * Network on the Neurobiology and Genetics of Autism Collaborative Programs of Excellence in Autism (CPEAs):...
View Profile - Path of Exile - DroidW
Table of Contents - December 28, 2004, 63 (12) | Neurology
Journal of Alzheimer's Disease - Volume 73, issue 4 - Journals - IOS Press
Abstract: Auditory agnosia for environmental sounds (AES) is an example of central auditory dysfunction. It is presumed to be ... Auditory Agnosia for Environmental Sounds in Alzheimers Disease: Not Hearing and Not Listening? ... We found that environmental sound agnosia is common in mild AD. We found a statistically significant difference in mean pure ...
Visual Scanning- Cognitive Ability
NAEC Meeting Minutes - June 21, 2019 | National Eye Institute
K-State Sports Bracket Round 2 - Miscellaneous - Bring On The Cats
Deric Bownds - Lectures & Writings
Dandelions - Kawabata Yasunari
Top 500 Songs of the 2010s | Culture Greyhound
DailyMed - TRETINOIN capsule, liquid filled
SSR 13-2p
Great Apes | Grove Atlantic
Guest Lecture of Chris Dijkerman | Adaptive Minds | Universität des Saarlandes
Cognition and Perceptual Disorders - Physiopedia
Agnosia[edit , edit source]. In agnosia, there is the failure of recognition. Commonly seen in neurodegenerative diseases.[12] ... Visual object agnosia[edit , edit source]. The patient cannot name the objects/faces/words presented in front of him. For ... Auditory agnosia[edit , edit source]. Hearing ability is intact but there is impairment in sound perception. Such patients have ... Tactile agnosia[edit , edit source]. The tactile perceptions are intact but the patient cannot recognize the objects via ...
Auditory agnosia7
- Epilepsy: syndrome of Landau-Kleffner giving an acquired verbal auditory agnosia. (dd-database.org)
- 1. Nonverbal auditory agnosia with lesion to Wernicke's area. (nih.gov)
- 6. Auditory agnosia and auditory spatial deficits following left hemispheric lesions: evidence for distinct processing pathways. (nih.gov)
- 8. The functional anatomy of recovery from auditory agnosia. (nih.gov)
- 14. Generalized auditory agnosia with spared music recognition in a left-hander. (nih.gov)
- 16. Auditory agnosia. (nih.gov)
- 18. Clinical and audiological findings in a case of auditory agnosia. (nih.gov)
Tactile agnosias1
- Research on the use of interventions for agnosias were difficult to come across in the literature, especially auditory and tactile agnosias. (weebly.com)
Treatment of agnosia2
- However, treatment of agnosia is symptomatic and supportive, such as rehabilitation through speech or occupational therapy. (nih.gov)
- There is no specific treatment of agnosia but when possible, the cause of the agnosia is often treated. (weebly.com)
Form agnosia2
- 1. We report measurements on a single patient, HJA, who has exhibited visual form agnosia since suffering a stroke. (ox.ac.uk)
- The form agnosia is the inability to discriminate against the basic geometric shapes, the integrative agnosia is the absence of coherent global integration of information. (dd-database.org)
Sensory3
- Few individuals with agnosia regain sensory functioning but most make gains within the first few months or year of diagnosis (Rogers, n.d. (weebly.com)
- Astereognosis (or tactile agnosia if only one hand is affected) is the inability to identify an object by active touch of the hands without other sensory input, such as visual or sensory information. (wikipedia.org)
- Tactile agnosia is characterized by an inability to perceive the shape and nature of an object by touch alone, despite unimpaired sensation to light touch, position, and other primary sensory modalities. (nih.gov)
Disorders1
- Consider participating in a clinical trial so clinicians and scientists can learn more about agnosia and related disorders. (nih.gov)
Stimuli2
- [2] These symptoms suggest that a very specific part of the brain is responsible for making the connections between tactile stimuli and functions/relationships of those stimuli, which, along with the relatively low impact this disorder has on a person's quality of life, helps explain the rarity of reports and research of individuals with tactile agnosia. (wikipedia.org)
- d) infarction in the territory of right posterior cerebral artery causes pure agnosia for streets and defective route finding that do not accompany visual agnosia for other stimuli. (nii.ac.jp)
Visual9
- Agnosia (also known as primary visual agnosia, monomodal visual amnesia, and visual amnesia) is a neurological disorder characterized by an inability to recognize and identify objects or persons using one or more of the senses. (nih.gov)
- There are, however, several case studies on visual forms of agnosias in the literature. (weebly.com)
- Visual Agnosia is rare, so rare that I found out last year when I was 58 that the visual impairment that I have had all of my life was due to visual agnosia . (themighty.com)
- My high functioning autism renders me light sensitive and with visual agnosia . (themighty.com)
- Visual agnosia has been well studied by anatomical, neuropsychological and neuroimaging studies. (elsevier.com)
- We carried out electrophysiological examinations on a 23-year-old man with associative visual agnosia, prosopagnosia and cerebral achromatopsia to evaluate the higher brain dysfunctions of visual recognition. (elsevier.com)
- Therefore, CS-VEPs and ERPs with color and motion discrimination tasks are useful methods for assessing the functional changes of visual recognition such as visual agnosia. (elsevier.com)
- What does visual agnosia tell us about perceptual organization and its relationship to object perception? (nih.gov)
- The conditioning of sexual behavior by visual agnosia. (nih.gov)
Lesion1
- 17. Pure word deafness with auditory object agnosia after bilateral lesion of the superior temporal sulcus. (nih.gov)
Associative1
- The perception of the form associative agnosia is normal but the perception of the meaning of the object is reduced. (dd-database.org)
Impairment1
- While astereognosis is characterized by the lack of tactile recognition in both hands, it seems to be closely related to tactile agnosia (impairment connected to one hand). (wikipedia.org)
Caregivers1
- Occupational therapy (OT) is often involved with providing strategies to help individuals with agnosia and his or her caregivers cope and adapt. (weebly.com)
Recognition2
- The agnosia is a cognitive disorder manifested by a lack of recognition ability (he does not know). (dd-database.org)
- An example is a task that requires typing quickly, as this agnosia type prevents the recognition of keys without looking at a keyboard. (wikipedia.org)
Brain1
- If agnosia is caused by an underlying disorder, treatment of that disorder may reduce symptoms and help prevent further brain damage. (nih.gov)
Incapacidad1
- La agnosia táctil se caracteriza por la incapacidad para percibir la forma y naturaleza de un objeto solo por el tacto, a pesar de no estar alterada la sensibilidad al tacto ligero, posición y otras modalidades sensitivas primarias. (bvsalud.org)
Perception1
- The deficit of the perception of forms aperceptive agnosia. (dd-database.org)
Body image1
- He nosologically assigned pain asymbolia to the group of agnosias and integrated it into the concept of body image, which was a central issue in his entire scientific work. (nih.gov)
Object2
- [1] As opposed to agnosia, when the object is observed visually, one should be able to successfully identify the object. (wikipedia.org)
- Individuals with tactile agnosia may be able to identify the name, purpose, or origin of an object with their left hand but not their right, or vice versa, or both hands. (wikipedia.org)
Rehabilitation1
- The databases of PubMed, Google Scholar, and Western University library's Summon feature were utilized using keywords "agnosia" AND "rehabilitation" OR "intervention" OR "treatment" for this search. (weebly.com)
Clinical1
- Learn about clinical trials currently looking for people with agnosia at Clinicaltrials.gov . (nih.gov)
Temporal1
- 3. [Dysprosody associated with environmental auditory sound agnosia in right temporal lobe hypoperfusion--a case report]. (nih.gov)
Tend1
- Interventions tend to focus on helping individuals with agnosia cope with their condition. (weebly.com)
Individuals1
- In addition, controlled treatment studies with individuals with agnosia are rare. (weebly.com)
Rare1
- Tactile agnosia observations are rare and case-specific. (wikipedia.org)
Research1
- More research needs to be conducted on general interventions for agnosias. (weebly.com)
Case1
- Several case studies surrounding agnosias exists in the literature. (weebly.com)
