Neural responses are typically characterized by computing the mean firing rate, but
response variability can exist across trials. Many studies have examined the effect of a …

Abstract [Correction Notice: An erratum for this article was reported in Vol 118 (1) of
Psychological Review (see record 2011-00732-008). The presentation of the colors in …

The activity of neurons in the primate lateral prefrontal cortex (LPFC) is strongly modulated
by visual attention. Such a modulation has mostly been documented by averaging the …

Models of visual attention hold that top-down signals from frontal cortex influence
information processing in visual cortex. It is unknown whether situations exist in which visual …

Task-evoked trial-by-trial variability is a ubiquitous property of neural responses, yet its
functional role remains largely unclear. Recent work in nonhuman primates shows that the …

Background Donepezil exerts pro-cognitive effects by nonselectively enhancing
acetylcholine (ACh) across multiple brain systems. Two brain systems that mediate pro …

The visually driven responses of macaque area V4 neurons are modulated during the
preparation of saccadic eye movements, but the relationship between presaccadic …

The role of spike rate versus timing codes in visual target selection is unclear. We
simultaneously recorded activity from multiple frontal eye field neurons and asked whether …

Numerous studies have described different functional cell types in the frontal eye field (FEF),
but the reliability of the distinction between these types has been uncertain. Studies in other …

The existence of a network of brain regions which are activated when one undertakes a
difficult visual search task is well established. Two primary nodes on this network are right …