A prefrontal source of visual target enhancement in the macaque area V4
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1027215699-MIT.pdf
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Full printable version
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3.38 MB
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Author(s)
Ghadooshahy, Azriel (Azriel Sion)
Advisor(s)
Robert Desimone.
Date Issued
2017
Publisher
Massachusetts Institute of Technology
Abstract
The ventral pre-arcuate area (VPA) in the primate prefrontal cortex has recently been found to play an important role in feature-based selection of visual targets in the context of a naturalistic free-gaze visual search task. While VPA neuronal activation was found to be necessary for behavioral performance as well as target selection in the FEF, its role in the broader context of the visual system remains to be addressed. To this end, we have interrogated the role of the VPA in mediating the effects of feature attention in the macaque visual area V4 by recording in V4 with and without muscimol inactivation in the VPA. We report here that neuronal activation in the VPA is necessary for firing rate increases related to target selection in V4. KEYWORDS: feature attention, visual search, muscimol, neurophysiology
Description
Thesis: S.M. in Neuroscience, Massachusetts Institute of Technology, Department of Brain and Cognitive Sciences, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 16).
Subjects
Brain and Cognitive Sciences.
MIT Department
Massachusetts Institute of Technology. Department of Brain and Cognitive Sciences
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