Feature-Based Attention in the Frontal Eye Field and Area V4 during Visual Search
Name
Zhou-2011-Feature-Based Attent.pdf
Size
1.14 MB
Format
Adobe PDF
Checksum (MD5)
30b04d525824f0da2c75b63e795cb941
Author(s)
Zhou, Huihui
Desimone, Robert
Date Issued
June 2011
Journal
Neuron
Publisher
Elsevier B.V.
Citation
Zhou, Huihui, and Robert Desimone. “Feature-Based Attention in the Frontal Eye Field and Area V4 During Visual Search.” Neuron 70, no. 6 (June 2011): 1205–1217. © 2011 Elsevier Inc.
Version
Final published version
Abstract
When we search for a target in a crowded visual scene, we often use the distinguishing features of the target, such as color or shape, to guide our attention and eye movements. To investigate the neural mechanisms of feature-based attention, we simultaneously recorded neural responses in the frontal eye field (FEF) and area V4 while monkeys performed a visual search task. The responses of cells in both areas were modulated by feature attention, independent of spatial attention, and the magnitude of response enhancement was inversely correlated with the number of saccades needed to find the target. However, an analysis of the latency of sensory and attentional influences on responses suggested that V4 provides bottom-up sensory information about stimulus features, whereas the FEF provides a top-down attentional bias toward target features that modulates sensory processing in V4 and that could be used to guide the eyes to a searched-for target.
MIT Department
McGovern Institute for Brain Research at MIT
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.neuron.2011.04.032
