Frank, Sebastian M. and Sun, Liwei and Forster, Lisa and Tse, Peter U. and Greenlee, Mark W. (2016) Cross-Modal Attention Effects in the Vestibular Cortex during Attentive Tracking of Moving Objects. JOURNAL OF NEUROSCIENCE, 36 (50). pp. 12720-12728. ISSN 0270-6474,
Full text not available from this repository. (Request a copy)Abstract
The midposterior fundus of the Sylvian fissure in the human brain is central to the cortical processing of vestibular cues. At least two vestibular areas are located at this site: the parietoinsular vestibular cortex (PIVC) and the posterior insular cortex (PIC). It is now well established that activity in sensory systems is subject to cross-modal attention effects. Attending to a stimulus in one sensory modality enhances activity in the corresponding cortical sensory system, but simultaneously suppresses activity in other sensory systems. Here, we wanted to probe whether such cross-modal attention effects also target the vestibular system. To this end, weused a visual multiple-object tracking task. By parametrically varying the number of tracked targets, we could measure the effect of attentional load on the PIVC and the PIC while holding the perceptual load constant. Participants performed the tracking task during functional magnetic resonance imaging. Results show that, compared with passive viewing of object motion, activity during object tracking was suppressed in the PIVC and enhanced in the PIC. Greater attentional load, induced by increasing the number of tracked targets, was associated with a corresponding increase in the suppression of activity in the PIVC. Activity in the anterior part of the PIC decreased with increasing load, whereas load effects were absent in the posterior PIC. Results of a control experiment show that attention-induced suppression in the PIVC is stronger than any suppression evoked by the visual stimulus per se. Overall, our results suggest that attention has a cross-modal modulatory effect on the vestibular cortex during visual object tracking.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SURFACE-BASED ANALYSIS; SELF-MOTION; SYLVIAN FISSURE; FMRI ACTIVATION; STIMULATION; SYSTEM; BRAIN; CONVERGENCE; RESPONSES; REGIONS; area PIC; area PIVC; attentional tracking; vestibular cognition; vestibular cortex |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Psychology and Pedagogy > Institut für Psychologie Psychology and Pedagogy > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 Apr 2019 05:51 |
| Last Modified: | 04 Apr 2019 05:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3782 |
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