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J Cogn Neurosci. 2003 Apr 1;15(3):409-18.

Success and failure suppressing reflexive behavior.

Author information

1
Department of Psychology, University of California, Berkeley 94720-1650, USA. cc@socrates.berkeley.edu

Abstract

The dynamic interplay between reflexive and controlled determinants of behavior is one of the most general organizing principles of brain function. A powerful analogue of this interplay is seen in the antisaccade task, which pits reflexive and willed saccadic mechanisms against one another. Event-related functional magnetic resonance imaging of the human brain showed greater prestimulus preparatory activity in the pre-supplementary motor area before voluntary antisaccades (saccades away from a target) compared with reflexive prosaccades (saccades to a target). Moreover, this preparatory activity was critically associated with reflex suppression; it predicted whether the reflex was later successfully inhibited in the trial. These dataillustrate a mechanism for top-down control over reflexive behavior.

PMID:
12729492
DOI:
10.1162/089892903321593126
[Indexed for MEDLINE]

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