Abstract：
:In a rapid categorisation task, monkeys and humans had to detect a target (animal or food) in briefly flashed (32 ms) and previously unseen natural images. Removing colour cues had very little effect on average performance. Impairments were restricted to a mild accuracy drop (in some human subjects) and a small reaction time mean increase (10-15 ms) observed both in monkeys and humans but only in the detection of food targets. In both tasks, accuracy and latency of the fastest behavioural responses were unaffected, suggesting that such ultra-rapid categorizations could depend on feed-forward processing of early coarse achromatic magnocellular information.
journal_name
Vision Resjournal_title
Vision researchauthors
Delorme A,Richard G,Fabre-Thorpe Mdoi
10.1016/s0042-6989(00)00083-3subject
Has Abstractpub_date
2000-01-01 00:00:00pages
2187-200issue
16eissn
0042-6989issn
1878-5646pii
S0042-6989(00)00083-3journal_volume
40pub_type
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