The Role of Awareness in Processing of Oculomotor Capture: Evidence from Event-related Potentials.

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Bibliographic Details
Title:	The Role of Awareness in Processing of Oculomotor Capture: Evidence from Event-related Potentials.
Authors:	Belopolsky, Artem V., Kramer, Arthur F., Theeuwes, Jan
Source:	Journal of Cognitive Neuroscience. Dec2008, Vol. 20 Issue 12, p2285-2297. 13p. 1 Black and White Photograph, 1 Diagram, 2 Charts, 2 Graphs.
Subjects:	Consciousness, Eye movement disorders, Eye movements, Neuroanatomy, Neurological errors
Abstract:	Previous research has shown that task-irrelevant onsets trigger an eye movement in their direction. Such oculomotor capture is often impervious to conscious awareness. The present study used event-related brain potentials to examine how such oculomotor errors are detected, evaluated, and compensated for and whether awareness of an error played a role at any of these stages of processing. The results show that the early processes of error detection and correction (as represented by the error-related negativity and the parietal N1) are not directly affected by subjective awareness of making an error. Instead, they seem to be modulated by the degree of temporal overlap between the programming of the correct and erroneous saccade. We found that only a later component (the errorrelated positivity [Pe]) is modulated by awareness of making an erroneous eye movement. We propose that awareness of oculomotor capture primarily depends on this later process. [ABSTRACT FROM AUTHOR]
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Database:	Psychology and Behavioral Sciences Collection

Description
Abstract:	Previous research has shown that task-irrelevant onsets trigger an eye movement in their direction. Such oculomotor capture is often impervious to conscious awareness. The present study used event-related brain potentials to examine how such oculomotor errors are detected, evaluated, and compensated for and whether awareness of an error played a role at any of these stages of processing. The results show that the early processes of error detection and correction (as represented by the error-related negativity and the parietal N1) are not directly affected by subjective awareness of making an error. Instead, they seem to be modulated by the degree of temporal overlap between the programming of the correct and erroneous saccade. We found that only a later component (the errorrelated positivity [Pe]) is modulated by awareness of making an erroneous eye movement. We propose that awareness of oculomotor capture primarily depends on this later process. [ABSTRACT FROM AUTHOR]
ISSN:	0898929X
DOI:	10.1162/jocn.2008.20161