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*  OSA | How to display data by color schemes compatible with red-green color perception deficiencies
Vision, color, and visual optics (330.0330) *Color vision (330.1720) *Vision - contrast sensitivity (330.1800) ... T. T W J Gadella, T. Jovin, and R. Clegg, "Fluorescence lifetime imaging microscopy (FLIM): Spatial resolution of ... same sample measured with different techniques or at different wavelengths). orange-blue. or magenta-green. channels ( ... Three novel color maps are proposed providing readers with normal color perception a maximum of color contrast while being a ...
  https://www.osapublishing.org/vjbo/abstract.cfm?uri=oe-21-8-9862
*  Frontiers | Visual Dysfunction in Posterior Cortical Atrophy | Neurology
... such as simultanagnosia and visual agnosia, as well as the more recently recognised visual field defects, are reviewed, along ... such as simultanagnosia and visual agnosia, as well as the more recently recognised visual field defects, are reviewed, along ... It is characterised by progressive impairment of higher (cortical) visual function with imaging evidence of degeneration ... Emphasis is given to the visual dysfunction that defines the disorder, and the classical deficits, ...
  https://www.frontiersin.org/articles/10.3389/fneur.2017.00389/full
*  Photopic vision - Wikipedia
... photopic vision allows color perception, mediated by cone cells, and a significantly higher visual acuity and temporal ... Most older adults lose photopic spatial contrast sensitivity. Adults in their 70s require about three times more contrast to ... The maximum efficiency is 683 lm/W at a wavelength of 555 nm (green). The wavelengths for when a person is in photopic vary ... "Aging and Neural Spatial Contrast Sensitivity: Photopic Vision". Vision Research. 33 (7): 939-949. doi:10.1016/0042-6989(93) ...
  https://en.wikipedia.org/wiki/Photopic_vision
*  An Overview Digital Images and Video: Display, Representations, and Standards | 2.1 Human Visual System and Color | InformIT
... covers human visual perception and color models; analog-video representations; 2D digital video representations and a brief ... where mk (λ) is the wavelength sensitivity function (also known as the color matching function) of the kth cone type or color ... The perceived color of light f (x1, x2, λ) at spatial location (x1, x2) depends on the distribution of energy in the wavelength ... We begin with a short introduction to human visual perception and color models in Section 2.1. We give a brief review of analog ...
  http://www.informit.com/articles/article.aspx?p=2418908&
*  Flickering Light | Neural Oscillation | Retina
Color Perception; Humans; Light; Male; Models, Psychological; Physical Stimulationmethods; Time Factors; Visual Perception ... of human visual perception generally rests on the assumption that conscious visual states represent the interaction of spatial ... The sensitivity of the brain to this type of visual stimulation was tested by means of objective electrophysiological methods ... The EEG results were not significantly different for different wavelengths, but the patient reported that longer wavelength ...
  https://www.scribd.com/document/19252944/Flickering-Light
*  handprint : color temperature
What causes this odd color change? The key factor is the span of the S cone sensitivity, which at wavelengths above ~570 nm (" ... Visual Associations. color theory typically explains these effects through absurd color associations "ice is blue, and so blue ... Unfortunately no modern color model represents the warm/cool contrast as a distinct dimension of color perception, so the ... I have explained why lightness and chroma are responsible for the "advancing" (spatial depth) or "arousing" (mood) effects ...
  http://www.handprint.com/HP/WCL/color12.html
*  L and M Cone Contributions to the Midget and Parasol Ganglion Cell Receptive Fields of Macaque Monkey Retina | Journal of...
... to maintain normal color perception in the face of differences in cone ratio and changes in the mean chromaticity of the visual ... and the spectral sensitivity of the photopigment on a wavelength by wavelength basis and then summing across wavelength. The ... Calkins DJ, Sterling P (1999) Evidence that circuits for spatial and color vision segregate at the first retinal synapse. ... In: Color vision: from genes to perception (Gegenfurtner KR, Sharpe LT, eds) pp 181-202. Cambridge: Cambridge UP. ...
  http://www.jneurosci.org/content/24/5/1079.long
*  Frontiers | Tobacco Use Decreases Visual Sensitivity in Schizophrenia | Psychology
To our knowledge, this is the first study evaluating effects of chronic tobacco use on visual sensitivity in SCZ patients. Our ... Understanding how chronic tobacco use influences the visual sensitivity has clinical implications, and may serve as a potential ... Our results suggested that patients with schizophrenia that are chronic tobacco use showed reduced visual sensitivity for ... Our results suggested that patients with schizophrenia that are chronic tobacco use showed reduced visual sensitivity for ...
  https://www.frontiersin.org/articles/10.3389/fpsyg.2018.00288/full
*  Temporal frequency and chromatic processing in humans: An fMRI study of the cortical visual areas | JOV | ARVO Journals
It was previously suggested that ventral visual areas (V4, VO) play a critical role in color perception and are highly ... Spatial structure is known to strongly affect psychophysical sensitivity to luminance modulation at low temporal frequency ( ... There are multiple afferent pathways in the primate visual system. The long- (L) to middle-wavelength (M) cone-opponent (∣L-M ... All subjects had normal visual acuity and were color normal; normalcy for color vision was checked by the Farnsworth-Munsell ...
  https://jov.arvojournals.org/article.aspx?articleid=2121286
*  Ophthalmologic Psychophysical Tests Support OCT Findings in Mild Alzheimer's Disease
Best-corrected visual acuity (VA), contrast sensitivity (CS) (3, 6, 12, and 18 cpds), color perception (CP), and perception ... Information given by the flash and pattern visual evoked potential, and the temporal and spatial contrast sensitivity function ... Bistratified ganglion cells receive blue-on/yellow-off color-opponent excitation signals from the short-wavelength sensitive S ... Color Perception. When assessing color perception in our MAD patients, we found no significant differences in terms of color ...
  https://www.hindawi.com/journals/joph/2015/736949/
*  Flashcards - BIOL 455 Visual
2. Peak sensitivity, responds to wide range of wavelengths, broadly tuned/lots of overlap, and you can only extract color info ... 1. When color outside of receptive field is different from color preferred in the receptive field. *2. Color perception, color ... changes in spatial area in lightness and darkness or color OR number of light-dark or color cycles that the stimulus shows per ... 4. Sensitivity. 5. Receptive field. 6. Visual acuity. 7. Response time. 8. Color vision? ...
  https://www.freezingblue.com/flashcards/print_preview.cgi?cardsetID=211567
*  Visual system - Wikipedia
Prosopagnosia Scotopic sensitivity syndrome Recovery from blindness Visual agnosia Visual modularity Visual perception Visual ... focusing on even small spatial and color changes. Then, 100 milliseconds in, upon receiving the translated LGN, V2, and V3 info ... December 2007). "Short-wavelength light sensitivity of circadian, pupillary, and visual awareness in humans lacking an outer ... Non-image forming visual functions, independent of visual perception, include the pupillary light reflex (PLR) and circadian ...
  https://en.wikipedia.org/wiki/Visual_system
*  Day vision | Article about day vision by The Free Dictionary
physiological sense of sight by which the form, color, size, movements, and distance of objects are perceived. The human eye ... Color and Stereoscopic Vision. Color vision is based on the ability to discriminate between the various wavelengths that ... The spatial aspects of the visual field are also of interest. Good acuity is restricted to a narrowly defined region at the ... About 8% of men and 0.5% of women experience some difficulty in color perception. Color blindness is usually an inherited sex- ...
  https://encyclopedia2.thefreedictionary.com/day+vision
*  Color constancy - Wikipedia
Spatial structure of cone inputs to color cells in alert macaque primary visual cortex (V-1). Journal of Neuroscience 21(8): ... Color constancy is an example of subjective constancy and a feature of the human color perception system which ensures that the ... Color vision is a process by which organisms and machines are able to distinguish objects based on the different wavelengths of ... Research in monkeys suggest that changes in chromatic sensitivity is correlated to activity in parvocellular lateral geniculate ...
  https://en.wikipedia.org/wiki/Color_constancy
*  Spatial frequency - Wikipedia
Fourier analysis Superlens Visual perception SPIE Optipedia article: "Spatial Frequency" As in e.g. Planck's formula. Martinez ... 2 Visual Acuity, Contrast Sensitivity". University of Utah. Retrieved July 2009. Check date values in: ,access-date= (help). ... is related to spatial frequency and wavelength by k = 2 π ξ = 2 π λ . {\displaystyle k=2\pi \xi ={\frac {2\pi }{\lambda }}.} In ... For example, in color coding by the three cones in the human retina, there is no special significance to the cone that is ...
  https://en.wikipedia.org/wiki/Spatial_frequency
*  Suppressive Lateral Interactions at Parafoveal Representations in Primary Visual Cortex | Journal of Neuroscience
2000) Spatial distribution of contextual interactions in primary visual cortex and in visual perception. J Neurophysiol 84:2048 ... 1995) Improvement in visual sensitivity by changes in local context: parallel studies in human observers and in V1 of alert ... whereas one wavelength corresponds to a distance of 1° for a spatial frequency of 1 cyc/°, which may not infringe on the CRF if ... The stimuli were presented on a CRT color monitor (21 inch with a resolution of 1024 × 768 and frame rate of 75 Hz) calibrated ...
  http://www.jneurosci.org/content/30/38/12745
*  Motocross
COLOR PERCEPTION: Important for riders to be able to discern different color flags used by flag men for communication. ... CONTRAST SENSITIVITY:. Vistech Tester. *PERIPHERAL VISION:. *Visual Fields Tester. *Peripheral Awareness Tester ... Multifocal or bifocal correction may adversely impact spatial perception, particularly in motion. ... Special tinted goggle lenses may be utilized to block out short wavelength light. ...
  https://www.aoa.org/optometrists/membership/aoa-sections/aoa-sections/sports-vision-section/motocross
*  Hoverflies are imperfect mimics of wasp colouration | SpringerLink
Ghim MM, Hodos W (2006) Spatial contrast sensitivity of birds. J Comp Physiol A 192(5):523-534CrossRefGoogle Scholar ... Osorio D, Miklósi A, Gonda Z (1999) Visual ecology and perception of coloration patterns by domestic chicks. Evol Ecol 13(7-8): ... Endler JA (1993) The color of light in forests and its implications. Ecol Monogr 63(1):2-27CrossRefGoogle Scholar ... Stockman A, Sharpe LT (2000) The spectral sensitivities of the middle- and long-wavelength-sensitive cones derived from ...
  https://link.springer.com/article/10.1007%2Fs10682-016-9824-9
*  Visual Neuroscience: Volume 12 - Issue 2 | Cambridge Core
Color effects in VI were preceded by an initial epoch of wavelength-insensitive activity. In layer 4c, the red effect reached ... In contrast to cones in the eyecup, cones in the isolated retina showed higher short-wavelength sensitivity and had action ... contrast relationship for a Q-cell at optimal spatial and temporal frequencies is shown, and Q-cells are also demonstrated to ... in relation to photoperiodic perception. ... Visual latencies in areas V1 and V2 of the macaque monkey * L.G ...
  https://www.cambridge.org/core/journals/visual-neuroscience/issue/D14E064344F7ADEF2F4EF9810B440EC6
*  Color-detection thresholds in rhesus macaque monkeys and humans | JOV | ARVO Journals
Conway B. R. (2001). Spatial structure of cone inputs to color cells in alert macaque primary visual cortex (V-1). Journal of ... The macaque monkey has become a premier model for physiological studies of human visual perception, including color (Conway et ... Smith V. C. Pokorny J. (1972). Spectral sensitivity of color-blind observers and the cone photopigments. Vision Research, 12 ( ... Martin P. R. Grunert U. (1999). Analysis of the short wavelength-sensitive ("blue") cone mosaic in the primate retina: ...
  http://jov.arvojournals.org/article.aspx?articleid=2194035
*  Sensory neuron - Wikipedia
In humans the three different types of cones correspond with a primary response to short wavelength (blue), medium wavelength ( ... The perception of these odor molecules is called a scent. Similarly to olfactory receptor neurons, taste receptors (gustatory ... This pathway is the most direct way for transmitting visual information to the brain. There are three primary types of ... an increased sensitivity to pain caused by sensory ion channel, TRPM8, which is typically responds to temperatures between 23 ...
  https://en.wikipedia.org/wiki/Sensory_neuron
*  Plus it
Detailed spatial perception requires an array of many photoreceptors, whereas rapid appreciation of change in visual detail ... 1976) Color receptors in the bee eye: morphology and spectral sensitivity. J Comp Physiol A Neuroethol Sens Neural Behav ... UV receptors have negligible sensitivity at this wavelength, or in some cases even generate negative responses (Skorupski et al ... Fast detection of visual change can be mediated by visual processes that ignore chromatic aspects of the visual signal, relying ...
  http://www.jneurosci.org/content/30/11/3896
*  perception
Color Sensitivity. uman color perception is an exceedingly complex topic. As such we can only present a brief introduction here ... Brightness Sensitivity. There are several ways to describe the sensitivity of the human visual system. To begin, let us assume ... Wavelength sensitivity. The perceived intensity as a function of , the spectral sensitivity, for the 'typical observer' is ... Spatial Frequency Sensitivity. If the constant intensity (brightness) Io is replaced by a sinusoidal grating with increasing ...
  http://jqsj.com/theory/perception.htm
*  Von Kries coefficient law - Wikipedia
... coefficient law in color adaptation describes the relationship between the illuminant and the human visual system sensitivity. ... Buchsbaum, G (1980). "A Spatial Processor Model for Object Colour Perception". Journal of the Franklin Institute 310. 310: 1. ... and short-wavelength cone response space): D = D 1 − 1 D 2 = [ L 2 / L 1 0 0 0 M 2 / M 1 0 0 0 S 2 / S 1 ] {\displaystyle D=D_{ ... The law accounts for the approximate color constancy in the human visual system. It is the oldest and most widely used law to ...
  https://en.wikipedia.org/wiki/Von_Kries_coefficient_law
*  Detecting Functional Changes in the Patient's Vision: Visual Field Analysis | Springer for Research & Development
The ability to evaluate visual function is one of several important clinical components for the detection, management, and ... Short wavelength color visual fields in glaucoma suspects at risk. Am J Ophthalmol. 1993;115:225-233.PubMedGoogle Scholar ... Observations on spatial frequency doubling. Perception. 1974;3:81-86.PubMedCrossRefGoogle Scholar ... Predicting binocular visual field sensitivity from monocular visual field results. Invest Ophthalmol Vis Sci. 2000;41:2212-2221 ...
  https://rd.springer.com/chapter/10.1007/978-0-387-76700-0_23