Supplementary eye fields
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2010-12-01
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The supplementary eye fields (SEFs) are located in dorsomedial frontal cortex and contribute to high-level control of eye movements. Recordings in the SEF reveal visual-, saccade-, and fixation-related activity, and stimulations in the SEF evoke saccades and fixations. Inactivations and lesions of the SEF, however, cause minimal oculomotor deficits. The SEF thus processes information relevant to eye movements and influences critical oculomotor centers but seems unnecessary for generating action. Instead, the SEF has overarching, subtle functions that include representing space in multiple ways, supervising behavior, monitoring conflict, prediction, learning, planning sequences, and coordination of the limbs and eyes. © 2009 Elsevier Ltd All rights reserved.
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Scholars@Duke
Marc A. Sommer
We study circuits for cognition. Using a combination of neurophysiology and biomedical engineering, we focus on the interaction between brain areas during visual perception, decision-making, and motor planning. Specific projects include the role of frontal cortex in metacognition, the role of cerebellar-frontal circuits in action timing, the neural basis of "good enough" decision-making (satisficing), and the neural mechanisms of transcranial magnetic stimulation (TMS).
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