Universität zu Köln

Gibbons, Henning, Wiegleb, Nancy and Stahl, Jutta ORCID: 0000-0002-3252-180X (2013). Levels of visuo-spatial selection: An ERP study of negative priming. Brain Cogn., 83 (2). S. 203 - 218. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1090-2147

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Abstract

Usually, a probe target appearing in a recently ignored distractor location is less efficiently processed. This robust phenomenon is called (visuo-) spatial negative priming (SNP). Among other explanations, concepts of persisting or retrieved spatial inhibition play a major role. Two relevant issues were investigated using event-related brain potentials (ERPs). The first pertains to context sensitivity of inhibition: Is a probe distractor necessary for SNP? The second concerns levels of processing at which spatial inhibition operates: Does SNP affect perception, selection, and/or stimulus classification? A localization task with and without probe distractors was employed while 64-channel EEG was recorded. Obviously, SNP does not require a probe distractor; the distractor-absent SNP effect was larger than the distractor-present SNP effect. Distractor-present SNP had two lateralized ERP effects, N1pc amplitude reduction and N2pc amplitude increase. Smaller N1pc may indeed reflect perceptual decrement, but was inversely related to size of behavioral SNP. By contrast, only strong-SNP participants showed N2pc increase, which points to selection disadvantage due to persisting inhibition of higher-level spatial representations. Distractor-absent SNP had no N1pc/N2pc correlates; instead, reduced amplitude of a broadly distributed P300 component suggests impaired stimulus classification due to episodic retrieval of inappropriate prime information. Overall, SNP seems to emerge from relatively late stages of processing, thus challenging the idea of context-free persisting inhibition of low-level spatial representations. Furthermore, distractor-present and distractor-absent SNP are qualitatively different from each other. (C) 2013 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Gibbons, Henning UNSPECIFIED UNSPECIFIED UNSPECIFIED Wiegleb, Nancy UNSPECIFIED UNSPECIFIED UNSPECIFIED Stahl, Jutta UNSPECIFIED orcid.org/0000-0002-3252-180X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-472944
DOI:	10.1016/j.bandc.2013.08.004
Journal or Publication Title:	Brain Cogn.
Volume:	83
Number:	2
Page Range:	S. 203 - 218
Date:	2013
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1090-2147
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language POSTERIOR CONTRALATERAL NEGATIVITY; VISUAL-SEARCH; FINGER MOVEMENTS; STATIC OBJECTS; LOCATION; ATTENTION; INFORMATION; TASK; INHIBITION; RETRIEVAL Multiple languages Neurosciences; Psychology, Experimental Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47294