Universität zu Köln

Zeng, Hang ORCID: 0000-0002-8836-1032, Weidner, Ralph ORCID: 0000-0002-4502-0166, Fink, Gereon R. ORCID: 0000-0002-8230-1856 and Chen, Qi (2017). Neural Correlates Underlying the Attentional Spotlight in Human Parietal Cortex Independent of Task Difficulty. Hum. Brain Mapp., 38 (10). S. 4996 - 5019. HOBOKEN: WILEY. ISSN 1097-0193

Full text not available from this repository.

Abstract

Changes in the size of the attentional focus and task difficulty often co-vary. Nevertheless, the neural processes underlying the attentional spotlight process and task difficulty are likely to differ from each other. To differentiate between the two, we parametrically varied the size of the attentional focus in a novel behavioral paradigm while keeping visual processing difficulty either constant or not. A behavioral control experiment proved that the present behavioral paradigm could indeed effectively manipulate the size of the attentional focus per se, rather than affecting purely perceptual processes or surface processing. Imaging results showed that neural activity in a dorsal frontoparietal network, including right superior parietal cortex (SPL), was positively correlated with the size of the attentional spotlight, irrespective of whether task difficulty was constant or varied across different sizes of attentional focus. In contrast, neural activity in the ventral frontoparietal network, including the right inferior parietal cortex (IPL), was positively correlated with increasing task difficulty. Data suggest that sub-regions in parietal cortex are differentially involved in the attentional spotlight process and task difficulty: while SPL was involved in the attentional spotlight process independent of task difficulty, IPL was involved in the effect of task difficulty independent of the attentional spotlight process. (C) 2017Wiley Periodicals, Inc.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zeng, Hang UNSPECIFIED orcid.org/0000-0002-8836-1032 UNSPECIFIED Weidner, Ralph UNSPECIFIED orcid.org/0000-0002-4502-0166 UNSPECIFIED Fink, Gereon R. UNSPECIFIED orcid.org/0000-0002-8230-1856 UNSPECIFIED Chen, Qi UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-216636
DOI:	10.1002/hbm.23709
Journal or Publication Title:	Hum. Brain Mapp.
Volume:	38
Number:	10
Page Range:	S. 4996 - 5019
Date:	2017
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1097-0193
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language OBJECT-BASED ATTENTION; ANTERIOR CINGULATE CORTEX; VISUAL-SPATIAL ATTENTION; SACCADE TARGET SELECTION; VERBAL WORKING-MEMORY; FRONTAL EYE FIELDS; ALZHEIMERS-DISEASE; ZOOM LENS; COUNTERMANDING SACCADES; CORTICAL NETWORKS Multiple languages Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21663