Universität zu Köln

Chen, Qi, Weidner, Ralph ORCID: 0000-0002-4502-0166, Vossel, Simone ORCID: 0000-0002-6351-8849, Weiss, Peter H. ORCID: 0000-0002-5230-9080 and Fink, Gereon R. ORCID: 0000-0002-8230-1856 (2012). Neural Mechanisms of Attentional Reorienting in Three-Dimensional Space. J. Neurosci., 32 (39). S. 13352 - 13363. WASHINGTON: SOC NEUROSCIENCE. ISSN 0270-6474

Full text not available from this repository.

Abstract

How the human brain reconstructs the three-dimensional (3D) world from two-dimensional (2D) retinal images has received a great deal of interest as has how we shift attention in 2D space. In contrast, it remains poorly understood how visuospatial attention is shifted in depth. In this fMRI study, by constructing a virtual 3D environment in the MR scanner and by presenting targets either close to or far from the participants in an adapted version of the Posner spatial-cueing paradigm, we investigated the behavioral and neural mechanisms underlying visuospatial orienting/reorienting in depth. At the behavioral level, although covering the same spatial distance, attentional reorienting to objects unexpectedly appearing closer to the observer and in the unattended hemispace was faster than reorienting to unexpected objects farther away. At the neural level, we found that in addition to the classical attentional reorienting system in the right temporoparietal junction, two additional brain networks were differentially involved in aspects of attentional reorienting in depth. First, bilateral premotor cortex reoriented visuospatial attention specifically along the third dimension of visual space (i.e., from close to far or vice versa), compared with attentional reorienting within the same depth plane. Second, a network of areas reminiscent of the human default-mode network, including posterior cingulate cortex, orbital prefrontal cortex, and left angular gyrus, was involved in the neural interaction between depth and attentional orienting, by boosting attentional reorienting to unexpected objects appearing both closer to the observer and in the unattended hemispace.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Chen, Qi UNSPECIFIED UNSPECIFIED UNSPECIFIED Weidner, Ralph UNSPECIFIED orcid.org/0000-0002-4502-0166 UNSPECIFIED Vossel, Simone UNSPECIFIED orcid.org/0000-0002-6351-8849 UNSPECIFIED Weiss, Peter H. UNSPECIFIED orcid.org/0000-0002-5230-9080 UNSPECIFIED Fink, Gereon R. UNSPECIFIED orcid.org/0000-0002-8230-1856 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-482788
DOI:	10.1523/JNEUROSCI.1772-12.2012
Journal or Publication Title:	J. Neurosci.
Volume:	32
Number:	39
Page Range:	S. 13352 - 13363
Date:	2012
Publisher:	SOC NEUROSCIENCE
Place of Publication:	WASHINGTON
ISSN:	0270-6474
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language POSTERIOR PARIETAL CORTEX; HUMAN BRAIN; FOCUSED ATTENTION; DEFAULT-MODE; SHAPE; REGISTRATION; NETWORKS; REGIONS; DORSAL Multiple languages Neurosciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/48278