Universität zu Köln

Wiesing, Michael ORCID: 0000-0001-8287-127X, Fink, Gereon R. ORCID: 0000-0002-8230-1856, Weidner, Ralph ORCID: 0000-0002-4502-0166 and Vossel, Simone ORCID: 0000-0002-6351-8849 (2020). Combined expectancies: the role of expectations for the coding of salient bottom-up signals. Exp. Brain Res., 238 (2). S. 381 - 394. NEW YORK: SPRINGER. ISSN 1432-1106

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Abstract

The visual system forms predictions about upcoming visual features based on previous visual experiences. Such predictions impact on current perception, so that expected stimuli can be detected faster and with higher accuracy. A key question is how these predictions are formed and on which levels of processing they arise. Particularly, predictions could be formed on early levels of processing, where visual features are represented separately, or might require higher levels of processing, with predictions formed based on full object representations that involve combinations of visual features. In four experiments, the present study investigated whether the visual system forms joint prediction errors or whether expectations about different visual features such as color and orientation are formed independently. The first experiment revealed that task-irrelevant and implicitly learned expectations were formed independently when the features were separately bound to different objects. In a second experiment, no evidence for a mutual influence of both types of task-irrelevant and implicitly formed feature expectations was observed, although both visual features were assigned to the same objects. A third experiment confirmed the findings of the previous experiments for explicitly rather than implicitly formed expectations. Finally, no evidence for a mutual influence of different feature expectations was observed when features were assigned to a single centrally presented object. Overall, the present results do not support the view that object feature binding generates joint feature-based expectancies of different object features. Rather, the results suggest that expectations for color and orientation are processed and resolved independently at the feature level.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wiesing, Michael UNSPECIFIED orcid.org/0000-0001-8287-127X 121064502 Fink, Gereon R. UNSPECIFIED orcid.org/0000-0002-8230-1856 UNSPECIFIED Weidner, Ralph UNSPECIFIED orcid.org/0000-0002-4502-0166 UNSPECIFIED Vossel, Simone UNSPECIFIED orcid.org/0000-0002-6351-8849 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-347432
DOI:	10.1007/s00221-019-05710-z
Journal or Publication Title:	Exp. Brain Res.
Volume:	238
Number:	2
Page Range:	S. 381 - 394
Date:	2020
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-1106
Language:	English
Faculty:	Faculty of Human Sciences
Divisions:	Faculty of Human Sciences > Department Psychologie
Subjects:	Psychology
Uncontrolled Keywords:	Keywords Language PERCEPTION; ATTENTION; FEATURES; OBJECTS Multiple languages Neurosciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/34743