Color Vision: How the Cortex Represents Color
نویسندگان
چکیده
منابع مشابه
Color Vision: How the Cortex Represents Color
Our understanding of how we see color has benefited from the long tradition of visual psychophysics. More recently, models and methods from psychophysics are guiding modern neuroimaging experiments on color vision. Combining the two techniques can lead to discoveries that neither can make alone.
متن کاملColor vision, cones, and color-coding in the cortex.
Color processing begins with the absorption of light by cone photoreceptors, and progresses through a series of hierarchical stages: Retinal signals carrying color information are transmitted through the lateral geniculate nucleus of the thalamus (LGN) up to the primary visual cortex (V1). From V1, the signals are processed by the second visual area (V2); then by cells located in subcompartment...
متن کاملAchromatopsia, color vision, and cortex.
Brain damage can entirely abolish color vision in cases of complete achromatopsia. Other processes that depend on wavelength differences, however, can be retained. Form and motion defined by pure color differences can be perceived readily even when the colors themselves cannot be told apart. The loss of color vision in cerebral achromatopsia has been equated with the loss of a "color center" pr...
متن کاملHow does the cortex construct color?
W is a color not a color? When it’s a wavelength. This may surprise those who were taught that color is carried by the dominant wavelength of the light ref lected from an object. And you’d be confused in good company; Isaac Newton, for example, believed that ‘‘every body ref lects its own color more copiously than the rest.’’ The colors we perceive, however, are determined not only by the wavel...
متن کاملColor-Vision and Color-Blindness
Special public attention was called to the subject in 1875 by an enquiry into the causes of a railway accident which had taken place in Sweden, from which it appears that colourblindness was the cause of the disaster. Our author having described colour-sensations, goes on to discuss the theories of colour-perception and colour-blindness, classifying the latter defect as total and partial. Total...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2002
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(02)01347-7