Selection and maintenance of saccade goals in the human frontal eye fields

Clayton E. Curtis, Mark D'Esposito

Research output: Contribution to journalArticle

Abstract

In a delayed-response task, response selection marks an important transition from sensory to motor processing. Using event-related functional magnetic resonance imaging, we imaged the human brain during performance of a novel delayed-saccade task that isolated response selection from visual encoding and motor execution. The frontal eye fields (FEFs) and intraparietal sulcus (IPS) both showed robust contra-lateralized activity time-locked to response selection. Moreover, response selection affected delay-period activity differently in these regions; it persisted throughout the memory delay period following response selection in the FEF but not IPS. Our results indicate that the FEF and IPS both make important but distinct contributions to spatial working memory. The mechanism that the FEF uses to support spatial working memory is tied to the selection and prospective coding of saccade goals, whereas the role of the IPS may be more tied to retrospective coding of sensory representations.

Original languageEnglish (US)
Pages (from-to)3923-3927
Number of pages5
JournalJournal of Neurophysiology
Volume95
Issue number6
DOIs
StatePublished - Jun 2006

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Parietal Lobe
Saccades
Frontal Lobe
Maintenance
Short-Term Memory
Magnetic Resonance Imaging
Brain
Spatial Memory

ASJC Scopus subject areas

  • Physiology
  • Neuroscience(all)

Cite this

Selection and maintenance of saccade goals in the human frontal eye fields. / Curtis, Clayton E.; D'Esposito, Mark.

In: Journal of Neurophysiology, Vol. 95, No. 6, 06.2006, p. 3923-3927.

Research output: Contribution to journalArticle

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