Microsaccadic Inhibition and P300 Enhancement in a Visual Oddball Task

  • It has recently been demonstrated that the presentation of a rare target in a visual oddball paradigm induces a prolonged inhibition of microsaccades. In the field of electrophysiology, the amplitude of the P300 component in event-related potentials (ERP) has been shown to be sensitive to the stimulus category (target vs. non target) of the eliciting stimulus, its overall probability, and the preceding stimulus sequence. In the present study we further specify the functional underpinnings of the prolonged microsaccadic inhibition in the visual oddball task, showing that the stimulus category, the frequency of a stimulus and the preceding stimulus sequence influence microsaccade rate. Furthermore, by co-recording ERPs and eye-movements, we were able to demonstrate that, despite being largely sensitive to the same experimental manipulation, the amplitude of P300 and the microsaccadic inhibition predict each other very weakly, and thus constitute two independent measures of the brain’s response to rare targets in the visual oddball paradIt has recently been demonstrated that the presentation of a rare target in a visual oddball paradigm induces a prolonged inhibition of microsaccades. In the field of electrophysiology, the amplitude of the P300 component in event-related potentials (ERP) has been shown to be sensitive to the stimulus category (target vs. non target) of the eliciting stimulus, its overall probability, and the preceding stimulus sequence. In the present study we further specify the functional underpinnings of the prolonged microsaccadic inhibition in the visual oddball task, showing that the stimulus category, the frequency of a stimulus and the preceding stimulus sequence influence microsaccade rate. Furthermore, by co-recording ERPs and eye-movements, we were able to demonstrate that, despite being largely sensitive to the same experimental manipulation, the amplitude of P300 and the microsaccadic inhibition predict each other very weakly, and thus constitute two independent measures of the brain’s response to rare targets in the visual oddball paradigm.show moreshow less

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Metadaten
Author:Matteo Valsecchi, Olaf Dimigen, Reinhold Kliegl, Werner Sommer, Massimo Turatto
URN:urn:nbn:de:kobv:517-opus-57170
Series (Serial Number):Postprints der Universität Potsdam : Humanwissenschaftliche Reihe (paper 256)
Document Type:Postprint
Language:English
Date of Publication (online):2011/12/13
Year of Completion:2009
Publishing Institution:Universität Potsdam
Release Date:2011/12/13
Tag:46 (3) 2009; ERPs; Microsaccades; Microsaccadic Inhibition; P300Psychophysiology; S. 635-644; Visual Oddball Paradigm
Source:Psychophysiology. - ISSN 0048-5772. - 46 (2009), 3 , S. 635-644
Organizational units:Humanwissenschaftliche Fakultät / Institut für Psychologie
Extern / Extern
Dewey Decimal Classification:4 Sprache / 40 Sprache / 400 Sprache
Licence (German):License LogoKeine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht
Notes extern:This is a preprint of the following article first published in:
Psychophysiology. 46 (2009), 3 , S. 635-644.
DOI: 10.1111/j.1469-8986.2009.00791.x
Copyright © 2009 Society for Psychophysiological Research