Agnosia
Gerstmann Syndrome
Kinesics
Kluver-Bucy Syndrome
Occipital Lobe
Prosopagnosia
Aphasia
Neuropsychological Tests
Visual Perception
Temporal Lobe
Magnetic Resonance Imaging
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 is a medical term that refers to the inability to recognize or comprehend the meaning or significance of sensory stimuli, even though the specific senses themselves are intact. It is a higher-level cognitive disorder, caused by damage to certain areas of the brain that are responsible for processing and interpreting information from our senses.
There are different types of agnosia, depending on which sense is affected:
* Visual agnosia: The inability to recognize or identify objects, faces, or shapes based on visual input.
* Auditory agnosia: The inability to understand spoken language or recognize sounds, even though hearing is intact.
* Tactile agnosia: The inability to recognize objects by touch, despite normal tactile sensation.
* Olfactory and gustatory agnosia: The inability to identify smells or tastes, respectively, even though the senses of smell and taste are functioning normally.
Agnosia can result from various causes, including stroke, brain injury, infection, degenerative diseases, or tumors that damage specific areas of the brain involved in sensory processing and interpretation. Treatment for agnosia typically focuses on rehabilitation and compensation strategies to help individuals adapt to their deficits and improve their quality of life.
Gerstmann syndrome is a rare neurological disorder primarily characterized by the following four symptoms:
1. Finger agnosia - inability to identify or recognize fingers on their own hand, often struggling to distinguish between similar fingers like index and middle finger.
2. Left-right disorientation - difficulty determining left from right, sometimes affecting body awareness and spatial orientation.
3. Agraphia - an impairment in writing abilities, including difficulties with spelling, grammar, or composing coherent texts.
4. Acalculia - inability to perform basic arithmetic calculations or have trouble understanding numerical concepts.
These symptoms are typically associated with damage to the dominant parietal lobe, specifically within the angular gyrus region of the brain. Gerstmann syndrome is often observed in individuals who have experienced stroke, brain injury, or other forms of neurological damage. It's important to note that not all individuals with Gerstmann syndrome will exhibit all four symptoms, and some may experience additional cognitive or motor impairments depending on the extent of the brain damage.
Kinesics is not a medical term per se, but rather a term used in the field of communication and social sciences. It refers to the study of body motion and gestures as a means of communication. This includes facial expressions, posture, gestures, and other bodily movements that convey information or emotions.
However, understanding kinesics is important for healthcare professionals, particularly those involved in patient care and communication. Healthcare providers can use kinesic cues to better understand their patients' needs, feelings, and responses during medical examinations, treatments, and consultations. For instance, a furrowed brow or squinted eyes may indicate confusion or discomfort, while crossed arms might suggest defensiveness or resistance.
Therefore, while not a medical term itself, kinesics plays an essential role in the field of medicine as it helps healthcare professionals to improve their communication skills and build better rapport with patients.
Kluver-Bucy Syndrome is a rare and complex neurobehavioral disorder, typically caused by damage to the temporal lobes and surrounding structures in the brain, particularly the amygdala and hippocampus. The syndrome is characterized by a range of symptoms that may include:
1. Hyperorality (excessive exploration of objects with the mouth)
2. Visual agnosia (inability to recognize familiar objects despite intact vision)
3. Hypermetamorphosis (compulsively looking at and exploring new objects)
4. Dietary changes, such as increased appetite and food preference changes
5. Emotional changes, including decreased emotional responsiveness and loss of fear or anxiety
6. Memory impairment
7. Increased sexual behavior
8. Hyperactivity and decreased initiative
9. Altered sleep-wake cycle
10. Inability to recognize faces (prosopagnosia)
It's important to note that the presence and severity of these symptoms can vary widely between individuals with Kluver-Bucy Syndrome, depending on the extent and location of brain damage. The syndrome is often associated with conditions such as herpes encephalitis, traumatic brain injury, or neurodegenerative diseases like Alzheimer's disease.
The occipital lobe is the portion of the cerebral cortex that lies at the back of the brain (posteriorly) and is primarily involved in visual processing. It contains areas that are responsible for the interpretation and integration of visual stimuli, including color, form, movement, and recognition of objects. The occipital lobe is divided into several regions, such as the primary visual cortex (V1), secondary visual cortex (V2 to V5), and the visual association cortex, which work together to process different aspects of visual information. Damage to the occipital lobe can lead to various visual deficits, including blindness or partial loss of vision, known as a visual field cut.
Prosopagnosia is a neurological disorder characterized by the inability to recognize or remember faces, even those of familiar people such as family members and friends. This condition often results from brain damage, particularly to the fusiform gyrus area located in the temporal lobe, which is responsible for facial recognition and memory.
Individuals with prosopagnosia may have difficulty distinguishing between faces, sometimes even mistaking their own reflection or confusing family members with strangers. However, they can still recognize people through other means, such as voice, hairstyle, clothing, or gait. Prosopagnosia can be congenital (present at birth) or acquired due to brain injury or disease.
There are two main types of prosopagnosia: developmental (or congenital) and acquired. Developmental prosopagnosia is present from birth and tends to run in families, suggesting a genetic component. Acquired prosopagnosia occurs after brain damage due to stroke, trauma, or degenerative diseases like dementia.
Prosopagnosia can significantly impact social interactions and relationships, causing distress and isolation for those affected. Currently, there is no cure for this condition; however, various strategies and techniques can help individuals with prosopagnosia cope and improve their face recognition abilities.
In medical terms, toes are the digits located at the end of the foot. Humans typically have five toes on each foot, consisting of the big toe (hallux), second toe, third toe, fourth toe, and little toe (fifth toe). The bones of the toes are called phalanges, with the exception of the big toe, which has a different bone structure and is composed of a proximal phalanx, distal phalanx, and sometimes a sesamoid bone.
Toes play an essential role in maintaining balance and assisting in locomotion by helping to push off the ground during walking or running. They also contribute to the overall stability and posture of the body. Various medical conditions can affect toes, such as ingrown toenails, bunions, hammertoes, and neuromas, which may require specific treatments or interventions to alleviate pain, restore function, or improve appearance.
Aphasia is a medical condition that affects a person's ability to communicate. It is caused by damage to the language areas of the brain, most commonly as a result of a stroke or head injury. Aphasia can affect both spoken and written language, making it difficult for individuals to express their thoughts, understand speech, read, or write.
There are several types of aphasia, including:
1. Expressive aphasia (also called Broca's aphasia): This type of aphasia affects a person's ability to speak and write clearly. Individuals with expressive aphasia know what they want to say but have difficulty forming the words or sentences to communicate their thoughts.
2. Receptive aphasia (also called Wernicke's aphasia): This type of aphasia affects a person's ability to understand spoken or written language. Individuals with receptive aphasia may struggle to follow conversations, comprehend written texts, or make sense of the words they hear or read.
3. Global aphasia: This is the most severe form of aphasia and results from extensive damage to the language areas of the brain. People with global aphasia have significant impairments in both their ability to express themselves and understand language.
4. Anomic aphasia: This type of aphasia affects a person's ability to recall the names of objects, people, or places. Individuals with anomic aphasia can speak in complete sentences but often struggle to find the right words to convey their thoughts.
Treatment for aphasia typically involves speech and language therapy, which aims to help individuals regain as much communication ability as possible. The success of treatment depends on various factors, such as the severity and location of the brain injury, the individual's motivation and effort, and the availability of support from family members and caregivers.
Neuropsychological tests are a type of psychological assessment that measures cognitive functions, such as attention, memory, language, problem-solving, and perception. These tests are used to help diagnose and understand the cognitive impact of neurological conditions, including dementia, traumatic brain injury, stroke, Parkinson's disease, and other disorders that affect the brain.
The tests are typically administered by a trained neuropsychologist and can take several hours to complete. They may involve paper-and-pencil tasks, computerized tasks, or interactive activities. The results of the tests are compared to normative data to help identify any areas of cognitive weakness or strength.
Neuropsychological testing can provide valuable information for treatment planning, rehabilitation, and assessing response to treatment. It can also be used in research to better understand the neural basis of cognition and the impact of neurological conditions on cognitive function.
Visual perception refers to the ability to interpret and organize information that comes from our eyes to recognize and understand what we are seeing. It involves several cognitive processes such as pattern recognition, size estimation, movement detection, and depth perception. Visual perception allows us to identify objects, navigate through space, and interact with our environment. Deficits in visual perception can lead to learning difficulties and disabilities.
The temporal lobe is one of the four main lobes of the cerebral cortex in the brain, located on each side of the head roughly level with the ears. It plays a major role in auditory processing, memory, and emotion. The temporal lobe contains several key structures including the primary auditory cortex, which is responsible for analyzing sounds, and the hippocampus, which is crucial for forming new memories. Damage to the temporal lobe can result in various neurological symptoms such as hearing loss, memory impairment, and changes in emotional behavior.
Medical Definition:
Magnetic Resonance Imaging (MRI) is a non-invasive diagnostic imaging technique that uses a strong magnetic field and radio waves to create detailed cross-sectional or three-dimensional images of the internal structures of the body. The patient lies within a large, cylindrical magnet, and the scanner detects changes in the direction of the magnetic field caused by protons in the body. These changes are then converted into detailed images that help medical professionals to diagnose and monitor various medical conditions, such as tumors, injuries, or diseases affecting the brain, spinal cord, heart, blood vessels, joints, and other internal organs. MRI does not use radiation like computed tomography (CT) scans.
Agnosia
Apperceptive agnosia
Agnosia microta
Integrative agnosia
Visual agnosia
Finger agnosia
Agnosia orneus
Auditory agnosia
Agnosia (moth)
Agnosia (film)
Associative visual agnosia
Social-emotional agnosia
Auditory verbal agnosia
Autotopagnosia
Astereognosis
Barbara Goenaga
Mirrored-self misidentification
Prosopagnosia
Simultanagnosia
Inferior longitudinal fasciculus
Speech perception
Jason Walter Brown
Color task
Achromatopsia
Language module
Surface dyslexia
Object recognition (cognitive science)
Color blindness
Language processing in the brain
Music-specific disorders
Agnosia - Wikipedia
agnosia - Symptoms, Treatments and Resources for agnosia
VISUAL AGNOSIA XL 03 • Studiocromie
Agnosia Treatment Market - Industry Size, Share, Analysis, Trends | 2030
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Agnosia - Neurologic Disorders - MSD Manual Professional Edition
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Finger agnosia
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4 Agnosia - Memorise
Synonyms of tactile agnosia
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agnosia.org - Website Information, WhoIs, and more
Agnosia / Invisible consequences / Consequences | Braininjury-explanation.com
vestibular agnosia Archives - Eye & Ear Foundation of Pittsburgh
Primal Regression Therapy "Astral Agnosia" CDR - Shame File Music
Visual Agnosia - Definition, Types, Symptoms, Causes and Treatments - PsychoTreat
associative agnosia इन हिंदी - associative agnosia का अर्थ - associative agnosia मीनिंग इन हिंदी
Neuro-ophthalmologist - All About Vision
Independent representation of parts and the relations between them: Evidence from integrative agnosia<...
Inattentional blindness - Scholarpedia
Collection - The Brain Series - ALS and SMA - Charlie Rose
Collection - The Brain Series - The Motor System - Charlie Rose
Perception- Cognitive ability CogniFit
The role of visual salience in directing eye movements in visual object agnosia. - Wellcome Centre for Integrative Neuroimaging
Gurney Journey: April 2021
Culture and Personality (Psychological Anthropology) -- University of Minnesota Duluth
Prosopagnosia3
- A specific form of associative visual agnosia is known as prosopagnosia. (wikipedia.org)
- As part of the Charlie Rose Brain Series, a panel of neurologists examine agnosia, and artist Chuck Close describes prosopagnosia. (charlierose.com)
- Family resemblance: Ten family members with prosopagnosia and within-class object agnosia. (springer.com)
Apperceptive visual agnosia3
- Visual agnosia can be further subdivided into two different subtypes: apperceptive visual agnosia and associative visual agnosia. (wikipedia.org)
- Individuals with apperceptive visual agnosia display the ability to see contours and outlines when shown an object, but they experience difficulty if asked to categorize objects. (wikipedia.org)
- Apperceptive visual agnosia is associated with damage to one hemisphere, specifically damage to the posterior sections of the right hemisphere. (wikipedia.org)
Forms of agnosia3
- Additionally, some forms of agnosia may be the result of developmental disorders. (wikipedia.org)
- Discrete brain lesions can cause different forms of agnosia, which may involve any sense. (msdmanuals.com)
- Other forms of agnosia involve very specific and complex processes within one sense. (msdmanuals.com)
Tactile Agnosia2
- The term tactile agnosia is identified in base64 scheme by the sequence dGFjdGlsZSBhZ25vc2lh, while the MD5 signature is equal to 3436635bd8e7c6efe0fa4260131cb56d. (altervista.org)
- The ASCII encoding of tactile agnosia in hexadecimal notation is 74616374696c652061676e6f736961. (altervista.org)
Associative9
- In contrast, individuals with associative visual agnosia experience difficulty when asked to name objects. (wikipedia.org)
- Associative agnosia is associated with damage to both the right and left hemispheres at the occipitotemporal border. (wikipedia.org)
- To make a diagnosis, the distinction between apperceptive and associative agnosia must be made. (wikipedia.org)
- In contrast, if an individual has a form of associative agnosia, they will not be able to match different examples of a stimulus. (wikipedia.org)
- For example, an individual who has been diagnosed with associative agnosia in the visual modality would not be able to match pictures of a laptop that is open with a laptop that is closed. (wikipedia.org)
- Associative agnosia is an inability to identify objects even with apparent perception and knowledge of them. (hindlish.in)
- Individuals with associative agnosia can copy or match simple figures, indicating that they can perceive objects correctly. (hindlish.in)
- In contrast, associative agnosia is a type of agnosia where perception occurs but recognition still does not occur. (hindlish.in)
- If a person correctly perceives the forms and has knowledge of the objects, but cannot identify the objects, they have associative agnosia . (hindlish.in)
Inability to recognize objects1
- Brain damage can lead to selective problems with visual perception , including visual agnosia, the inability to recognize objects even though elementary visual functions remain intact, such disorders are relatively rare, they provide a window on how the normal brain might perform the complex task of vision. (psychotreat.com)
Result from strokes1
- Agnosia can result from strokes, dementia, or other neurological disorders. (wikipedia.org)
Recognize5
- Visual agnosia is a broad category that refers to a deficiency in the ability to recognize visual objects. (wikipedia.org)
- The global market of agnosia treatment is expected to reach USD 34,976 Million by 2030 at 3.2% CAGR during the forecast period 2022-2030.Agnosia is a rare neurological condition in which an individual may face difficulty to recognize a familiar person, sound or object. (marketresearchfuture.com)
- Finger agnosia is defined as the inability to recognize or orient to one's own fingers. (psychology-lexicon.com)
- Patients with agnosia fail to recognize certain objects, people, and shapes, and is usually associated with brain injury or neurological illnesses such as stroke or dementia. (memorise.org)
- A more precise definition of visual agnosia would be the inability to recognize imported sensory impressions of familiar objects by sight, usually due to injury to one of the visual association areas, this condition can also be called objective blindness or psychic blindness. (psychotreat.com)
Lesions2
- 1 The consistency of this model to agnosia is shown by evidence that bilateral lesions to the superior temporal sulcus produces 'pure word deafness' (Kussmaul, 1877), or as it is understood today, speech agnosia. (wikipedia.org)
- Moreover, there are several conditions that may cause brain lesions and are associated with agnosia. (marketresearchfuture.com)
Balint's Syndrome1
- Some causes of agnosia include diseases such as Alzheimer's, Pick's disease, Balint's syndrome. (marketresearchfuture.com)
Subtypes1
- There are many types and subtypes of visual agnosia. (psychotreat.com)
Dementia2
- Medical conditions such as dementia, stroke, head injury or any other neurological condition may lead to development of agnosia. (marketresearchfuture.com)
- 1-6 Impairments of flavour processing and particularly flavour agnosia have been associated with focal anterior temporal lobe damage and, in the neurodegenerative disease spectrum, with frontotemporal lobar degeneration (FTLD), especially the syndrome of semantic dementia or semantic variant primary progressive aphasia (svPPA). (bmj.com)
Disturbances1
- INTERPRETATION: Based on clinical-anatomical correlation, the patient's visual disturbances, in this case right hemianopsia and object agnosia, were solely related to the stroke and not to a neurodegenerative disorder. (bvsalud.org)
Affects a single2
- Agnosia only affects a single modality, such as vision or hearing. (wikipedia.org)
- As such agnosia affects a single pathway when brain suffers a certain damage. (marketresearchfuture.com)
Patients2
- Patients who experience dramatic recovery from blindness experience significant to total agnosia. (wikipedia.org)
- For example, patients with somatosensory agnosia have difficulty identifying a familiar object (eg, key, safety pin) that is placed in their hand on the side of the body opposite the damage. (msdmanuals.com)
Brain4
- Damage causing agnosia usually occurs in either the occipital or parietal lobes of the brain. (wikipedia.org)
- Typically agnosia results when there has been damage to a particular area of the brain. (daybreakadultdayservices.org)
- While cortical blindness results from injury to the primary visual cortex, visual agnosia results from damage to the anterior cortex, such as the posterior occipital and / or temporal lobe in the brain. (psychotreat.com)
- Damage to the associated visual association cortex of the brain or parts of the central stream of vision due to injury to the temporal and parietal lobes is believed to be the primary cause of visual agnosia. (psychotreat.com)
Disorders2
- The cause of this disorders may precede the development of primary visual agnosia. (marketresearchfuture.com)
- The visual agnosia is a comprehensive review and updated list of disorders top view that relates these disorders with current conceptions of the top view of cognitive science, which illuminate both neuropsychological disorders and the nature of normal objects visual recognition. (psychotreat.com)
Damage1
- The effect of damage to the superior temporal sulcus is consistent with several types of neurolinguistic deficiencies, and some contend that agnosia is one of them. (wikipedia.org)
Recognition1
- In order to study face recognition in relative isolation from visual processes that may also contribute to object recognition and reading, we investigated CK, a man with normal face recognition but with object agnosia and dyslexia caused by a closed-head injury. (nih.gov)
Individuals2
- Many individuals suffering from agnosia can still retain their cognitive abilities, such as reading and basic math. (marketresearchfuture.com)
- S. M., an individual with integrative agnosia, and neurologically intact ("normal") individuals learned initially to identify 4 target objects constructed of 2 simple volumetric parts. (northwestern.edu)
Object3
- Agnosia is inability to identify an object using one or more of the senses. (msdmanuals.com)
- These results suggest that encoding the spatial arrangements of parts of an object requires a mechanism that is different from that required for encoding the shape of individual parts, with the former selectively compromised in integrative agnosia. (northwestern.edu)
- The role of visual salience in directing eye movements in visual object agnosia. (ox.ac.uk)
Deficit1
- In order for an individual to be diagnosed with agnosia, they must only be experiencing a sensory deficit in a single modality. (wikipedia.org)
Sensory1
- Agnosia is the inability to process sensory information. (wikipedia.org)
Senses2
- Physical examination is performed to detect any primary deficits in individual related to senses or inability to infer any test for agnosia. (marketresearchfuture.com)
- Agnosia can affect any one of the senses, though vision is most common. (daybreakadultdayservices.org)
Intact1
- In order to assess an individual for agnosia, it must be verified that the individual does not have a loss of sensation, and that both their language abilities and intelligence are intact. (wikipedia.org)
Specific1
- There is no specific treatment for agnosia. (marketresearchfuture.com)
Knowledge2
- Agnosia comes from the greek word for ignorance or absence of knowledge. (memorise.org)
- Knowledge and interpretation of visual agnosias can in many cases be clinically valuable. (bvsalud.org)
Treatment2
- The global agnosia treatment market consists of countries namely America, Europe, Asia Pacific, and the Middle East & Africa. (marketresearchfuture.com)
- North America dominated the global agnosia treatment market owing to the increasing healthcare expenditure. (marketresearchfuture.com)
Records1
- What is DNS Records of agnosia.org? (cubdomain.com)