Journal
PSYCHOLOGICAL SCIENCE
Volume 19, Issue 2, Pages 128-136Publisher
SAGE PUBLICATIONS INC
DOI: 10.1111/j.1467-9280.2008.02058.x
Keywords
-
Categories
Funding
- NEI NIH HHS [R01-EY08890, P30-EY08126, P30 EY008126, T32 EY07135, R01 EY008890, T32 EY007135, F32 EY015043] Funding Source: Medline
- NICHD NIH HHS [P30-HD015052, P30 HD015052] Funding Source: Medline
Ask authors/readers for more resources
Most models assume that response time (RT) comprises the time required for successive processing stages, but they disagree about whether information is transmitted continuously or discretely between stages. We tested these alternative hypotheses by measuring when movement-related activity began in the frontal eye field (FEF) of macaque monkeys performing visual search. Previous work showed that RT was longer when visual neurons in FEF took longer to select the target, a finding consistent with prolonged perceptual processing during less efficient search. We now report that the buildup of saccadic movement-related activity in FEF is delayed in inefficient visual search. Variability in the delay of movement-related activity accounted for the difference in RT between search conditions and for the variability of RT within conditions. These findings provide neurophysiological support for the hypothesis that information is transmitted discretely between perceptual and response stages of processing during visual search.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available