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Prefrontal cortex and basal ganglia contributions to visual working memory

Open access
Voytek, Bradley, Knight, Robert T.·2010·Proceedings of the National Academy of Sciences

Abstract

Visual working memory (VWM) is a remarkable skill dependent on the brain's ability to construct and hold an internal representation of the world for later comparison with an external stimulus. The prefrontal cortex (PFC) and basal ganglia (BG) interact within a cortical and subcortical network supporting VWM. We used scalp electroencephalography in groups of patients with unilateral PFC or BG lesions to provide evidence that these regions play complementary but dissociable roles in VWM. PFC patients show behavioral and electrophysiological deficits manifested by attenuation of extrastriate attention and VWM-related neural activity only for stimuli presented to the contralesional visual field. In contrast, patients with BG lesions show behavioral and electrophysiological VWM deficits independent of the hemifield of stimulus presentation but have intact extrastriate attention activity. The results support a model wherein the PFC is critical for top-down intrahemispheric modulation of attention and VWM with the BG involved in global support of VWM processes.

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Metadata

Authors
Voytek, B., & Knight, R. T.
Venue
Proceedings of the National Academy of Sciences
Published
2010-10-04
Volume
107
Issue
42
Pages
18167-18172
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2027741125
Cited by
181
References
10
FWCI
8.15
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Prefrontal cortex and basal ganglia contributions to visual working memory. https://app.cochat.ai/papers/10.1073/pnas.1007277107
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Voytek, B., & Knight, R. T. (2010). Prefrontal cortex and basal ganglia contributions to visual working memory. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1007277107

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