Universität zu Köln

Mengotti, Paola ORCID: 0000-0001-8427-1737, Boers, Frank, Dombert, Pascasie L., Fink, Gereon R. ORCID: 0000-0002-8230-1856 and Vossel, Simone ORCID: 0000-0002-6351-8849 (2018). Integrating modality-specific expectancies for the deployment of spatial attention. Sci Rep, 8. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

The deployment of spatial attention is highly sensitive to stimulus predictability. Despite evidence for strong crossmodal links in spatial attentional systems, it remains to be elucidated how concurrent but divergent predictions for targets in different sensory modalities are integrated. In a series of behavioral studies, we investigated the processing of modality-specific expectancies using a multimodal cueing paradigm in which auditory cues predicted the location of visual or tactile targets with modality-specific cue predictability. The cue predictability for visual and tactile targets was manipulated independently. A Bayesian ideal observer model with a weighting factor was applied to trial-wise individual response speed to investigate how the two probabilistic contexts are integrated. Results showed that the degree of integration depended on the level of predictability and on the divergence of the modality-specific probabilistic contexts (Experiments 1-2). However, when the two probabilistic contexts were matched in their level of predictability and were highly divergent (Experiment 3), higher separate processing was favored, especially when visual targets were processed. These findings suggest that modality-specific predictions are flexibly integrated according to their reliability, supporting the hypothesis of separate modality-specific attentional systems that are however linked to guarantee an efficient deployment of spatial attention across the senses.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mengotti, Paola UNSPECIFIED orcid.org/0000-0001-8427-1737 UNSPECIFIED Boers, Frank UNSPECIFIED UNSPECIFIED UNSPECIFIED Dombert, Pascasie L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fink, Gereon R. UNSPECIFIED orcid.org/0000-0002-8230-1856 UNSPECIFIED Vossel, Simone UNSPECIFIED orcid.org/0000-0002-6351-8849 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-198679
DOI:	10.1038/s41598-018-19593-7
Journal or Publication Title:	Sci Rep
Volume:	8
Date:	2018
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BAYESIAN MODEL SELECTION; SACCADIC EYE-MOVEMENTS; CROSSMODAL LINKS; HUMAN BRAIN; INFERENCE Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19867