منابع مشابه
Pupillary responses to coloured and contourless displays in total cerebral achromatopsia.
In two patients with total acquired cortical colour blindness and in six control subjects we studied the binocular pupillary response to a variety of sharply defined coloured and grey displays that either had the same mean luminance as the background (isoluminant) or were of greater mean luminance. Despite their complete inability to identify or to discriminate between colours the patients, lik...
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 کاملA century of cerebral achromatopsia.
This review is an enquiry into why the early clinical evidence for a colour centre in the cerebral cortex of man was so successfully dismissed for the best part of a century. The imperfection of this evidence cannot be the reason, for the same evidence that was rejected earlier is accepted today. Instead, it was because the prevalent concepts of vision as a function, and of the role of the cere...
متن کاملAchromatopsia in the aura of migraine.
A 49 year old woman reported an attack of transient neurological dysfunction associated with unilateral headache. A prominent feature of the aura was a period of complete achromatopsia, so that the visual scene was experienced in monochrome. The episode developed to include features of prosopagnosia and spatial agnosia before resolving completely. Other episodes of transient neurological dysfun...
متن کاملA Quantitative and Qualitative Exploration of Photoaversion in Achromatopsia
Purpose Photoaversion (PA) is a disabling and ubiquitous feature of achromatopsia (ACHM). We aimed to help define the characteristics of this important symptom, and present the first published assessment of its impact on patients' lives, as well as quantitative and qualitative PA assessments. Methods Molecularly confirmed ACHM subjects were assessed for PA using four tasks: structured survey ...
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ژورنال
عنوان ژورنال: American Journal of Ophthalmology
سال: 1918
ISSN: 0002-9394
DOI: 10.1016/s0002-9394(18)90652-5