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Human frontal eye fields and spatial priming of pop-out

O'Shea, J; Muggleton, NG; Cowey, A; Walsh, V; (2007) Human frontal eye fields and spatial priming of pop-out. J COGNITIVE NEUROSCI , 19 (7) 1140 - 1151. Green open access

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Abstract

"Priming of pop-out" is a form of implicit memory that facilitates detection of a recently inspected search target. Repeated presentation of a target's features or its spatial position improves detection speed (feature/spatial priming). This study investigated a role for the human frontal eye fields (FEFs) in the priming of color pop-out. To test the hypothesis that the FEFs play a role in short-term memory storage, transcranial magnetic stimulation (TMS) was applied during the intertrial interval. There was no effect of TMS on either spatial or feature priming. To test whether the FEFs are important when a saccade is being programmed to a repeated target color or location, TMS was applied during the search array. TMS over the left but not the right FEFs abolished spatial priming, but had no effect on feature priming. These findings demonstrate functional specialization of the left FEFs for spatial priming, and distinguish this role from target discrimination and saccade-related processes. The results suggest that the left FEFs integrate a spatial memory signal with an evolving saccade program, which facilitates saccades to a recently inspected location.

Type: Article
Title: Human frontal eye fields and spatial priming of pop-out
Open access status: An open access version is available from UCL Discovery
Keywords: TRANSCRANIAL MAGNETIC STIMULATION, SHORT-TERM-MEMORY, VISUAL-SEARCH, WORKING-MEMORY, SUPERIOR COLLICULUS, PARIETAL CORTEX, SACCADE GOALS, NEURAL MECHANISMS, TARGET SELECTION, MOTOR ATTENTION
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/5852
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