Crossmodal coupling of oculomotor controland spatial attention in vision and audition

  • Fixational eye movements occur involuntarily during visual fixation of stationary scenes. The fastest components of these miniature eye movements are microsaccades, which can be observed about once per second. Recent studies demonstrated that microsaccades are linked to covert shifts of visual attention [e.g., Engbert & Kliegl (2003), Vision Res 43:1035-1045]. Here,we generalized this finding in two ways. First, we used peripheral cues, rather than the centrally presented cues of earlier studies. Second, we spatially cued attention in vision and audition to visual and auditory targets. An analysis of microsaccade responses revealed an equivalent impact of visual and auditory cues on microsaccade-rate signature (i.e., an initial inhibition followed by an overshoot and a final return to the pre-cue baseline rate). With visual cues or visual targets,microsaccades were briefly aligned with cue direction and then opposite to cue direction during the overshoot epoch, probably as a result of an inhibition of an automatic saccade to the peripFixational eye movements occur involuntarily during visual fixation of stationary scenes. The fastest components of these miniature eye movements are microsaccades, which can be observed about once per second. Recent studies demonstrated that microsaccades are linked to covert shifts of visual attention [e.g., Engbert & Kliegl (2003), Vision Res 43:1035-1045]. Here,we generalized this finding in two ways. First, we used peripheral cues, rather than the centrally presented cues of earlier studies. Second, we spatially cued attention in vision and audition to visual and auditory targets. An analysis of microsaccade responses revealed an equivalent impact of visual and auditory cues on microsaccade-rate signature (i.e., an initial inhibition followed by an overshoot and a final return to the pre-cue baseline rate). With visual cues or visual targets,microsaccades were briefly aligned with cue direction and then opposite to cue direction during the overshoot epoch, probably as a result of an inhibition of an automatic saccade to the peripheral cue. With left auditory cues and auditory targets microsaccades oriented in cue direction. Thus, microsaccades can be used to study crossmodal integration of sensory information and to map the time course of saccade preparation during covert shifts of visual and auditory attention.show moreshow less

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Metadaten
Author:Martin Rolfs, Ralf Engbert, Reinhold Kliegl
URN:urn:nbn:de:kobv:517-opus-56804
Series (Serial Number):Postprints der Universität Potsdam : Humanwissenschaftliche Reihe, ISSN 1866-8364 (paper 234)
Document Type:Postprint
Language:English
Date of Publication (online):2011/12/01
Year of Completion:2005
Publishing Institution:Universität Potsdam
Release Date:2011/12/01
Tag:Covert orienting; Fixational eye movements; Microsaccades; Multisensory
Source:Experimental Brain Research. - ISSN 0014-4819. - 166(2005), 3-4, S. 427-439
Organizational units:Humanwissenschaftliche Fakultät / Exzellenzbereich Kognitionswissenschaften
Dewey Decimal Classification:4 Sprache / 40 Sprache / 400 Sprache
Licence (German):License LogoKeine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht
Notes extern:
first published in:

Experimental Brain Research. - ISSN 0014-4819. - 166(2005), 3-4, S. 427-439
DOI:10.1007/s00221-005-2382-y
Copyright 2005 Springer