Universität zu Köln

Pfeiffer, Ulrich J., Schilbach, Leonhard ORCID: 0000-0001-5547-8309, Timmermans, Bert ORCID: 0000-0002-0404-8912, Kuzmanovic, Bojana, Georgescu, Alexandra L., Bente, Gary and Vogeley, Kai (2014). Why we interact: On the functional role of the striatum in the subjective experience of social interaction. Neuroimage, 101. S. 124 - 138. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1095-9572

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Abstract

There is ample evidence that human primates strive for social contact and experience interactions with conspecifics as intrinsically rewarding. Focusing on gaze behavior as a crucial means of human interaction, this study employed a unique combination of neuroimaging, eye-tracking, and computer-animated virtual agents to assess the neural mechanisms underlying this component of behavior. In the interaction task, participants believed that during each interaction the agent's gaze behavior could either be controlled by another participant or by a computer program. Their task was to indicate whether they experienced a given interaction as an interaction with another human participant or the computer program based on the agent's reaction. Unbeknownst to them, the agent was always controlled by a computer to enable a systematic manipulation of gaze reactions by varying the degree to which the agent engaged in joint attention. This allowed creating a tool to distinguish neural activity underlying the subjective experience of being engaged in social and non-social interaction. In contrast to previous research, this allows measuring neural activity while participants experience active engagement in real-time social interactions. Results demonstrate that gaze-based interactions with a perceived human partner are associated with activity in the ventral striatum, a core component of reward-related neurocircuitry. In contrast, interactions with a computer-driven agent activate attention networks. Comparisons of neural activity during interaction with behaviorally naive and explicitly cooperative partners demonstrate different temporal dynamics of the reward system and indicate that the mere experience of engagement in social interaction is sufficient to recruit this system. (C) 2014 Elsevier Inc. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pfeiffer, Ulrich J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schilbach, Leonhard UNSPECIFIED orcid.org/0000-0001-5547-8309 UNSPECIFIED Timmermans, Bert UNSPECIFIED orcid.org/0000-0002-0404-8912 UNSPECIFIED Kuzmanovic, Bojana UNSPECIFIED UNSPECIFIED UNSPECIFIED Georgescu, Alexandra L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bente, Gary UNSPECIFIED UNSPECIFIED UNSPECIFIED Vogeley, Kai UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-425277
DOI:	10.1016/j.neuroimage.2014.06.061
Journal or Publication Title:	Neuroimage
Volume:	101
Page Range:	S. 124 - 138
Date:	2014
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1095-9572
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DECISION-MAKING; JOINT ATTENTION; ORBITOFRONTAL CORTEX; VENTRAL STRIATUM; HUMAN-MOTIVATION; NEURAL BASIS; HUMAN BRAIN; REWARD; NEUROSCIENCE; COOPERATION Multiple languages Neurosciences; Neuroimaging; Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/42527