Abstract:
:When we look at our spatial environment we have the feeling that the whole visual field is coloured, yet the density of cone photoreceptors decreases considerably as eccentricity increases. We investigated colour perception (coloured/noncoloured), colour naming and whether colour helps object recognition at eccentricities varying from 0 degrees to 80 degrees in healthy observers and patients with low vision. We found that colours can be perceived and even identified above chance at very large eccentricities (60 degrees). When asked to categorize coloured and grey level objects as edible/nonedible, both healthy observers and patients with low vision showed better performance for coloured edible objects at 50 degrees suggesting that colour is used for object recognition in conditions of degraded form perception.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Naïli F,Despretz P,Boucart Mdoi
10.1097/01.wnr.0000236864.54575.98subject
Has Abstractpub_date
2006-10-23 00:00:00pages
1571-4issue
15eissn
0959-4965issn
1473-558Xpii
00001756-200610230-00002journal_volume
17pub_type
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