caa a22 4500 445354097 CHVBK 20180317142854.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s00221-010-2460-7 doi (NATIONALLICENCE)springer-10.1007/s00221-010-2460-7 Dissociable cognitive mechanisms underlying human path integration [Elektronische Daten] [Jan Wiener, Alain Berthoz, Thomas Wolbers] Path integration is a fundamental mechanism of spatial navigation. In non-human species, it is assumed to be an online process in which a homing vector is updated continuously during an outward journey. In contrast, human path integration has been conceptualized as a configural process in which travelers store working memory representations of path segments, with the computation of a homing vector only occurring when required. To resolve this apparent discrepancy, we tested whether humans can employ different path integration strategies in the same task. Using a triangle completion paradigm, participants were instructed either to continuously update the start position during locomotion (continuous strategy) or to remember the shape of the outbound path and to calculate home vectors on basis of this representation (configural strategy). While overall homing accuracy was superior in the configural condition, participants were quicker to respond during continuous updating, strongly suggesting that homing vectors were computed online. Corroborating these findings, we observed reliable differences in head orientation during the outbound path: when participants applied the continuous updating strategy, the head deviated significantly from straight ahead in direction of the start place, which can be interpreted as a continuous motor expression of the homing vector. Head orientation—a novel online measure for path integration—can thus inform about the underlying updating mechanism already during locomotion. In addition to demonstrating that humans can employ different cognitive strategies during path integration, our two-systems view helps to resolve recent controversies regarding the role of the medial temporal lobe in human path integration. Springer-Verlag, 2010 Path integration nationallicence Cognitive strategies nationallicence Spatial cognition nationallicence Wiener Jan Department of Psychology, Bournemouth University, Poole House, Talbot Campus, Fern Barrow, BH12 5BB, Poole, Dorset, UK aut Berthoz Alain CNRS, Collège de France, 75005, Paris, France aut Wolbers Thomas Centre for Cognitive and Neural Systems, University of Edinburgh, Edinburgh, UK aut Experimental Brain Research Springer-Verlag 208/1(2011-01-01), 61-71 0014-4819 208:1<61 2011 208 221 https://doi.org/10.1007/s00221-010-2460-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00221-010-2460-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wiener Jan Department of Psychology, Bournemouth University, Poole House, Talbot Campus, Fern Barrow, BH12 5BB, Poole, Dorset, UK aut NATIONALLICENCE 700 1- Berthoz Alain CNRS, Collège de France, 75005, Paris, France aut NATIONALLICENCE 700 1- Wolbers Thomas Centre for Cognitive and Neural Systems, University of Edinburgh, Edinburgh, UK aut NATIONALLICENCE 773 0- Experimental Brain Research Springer-Verlag 208/1(2011-01-01), 61-71 0014-4819 208:1<61 2011 208 221 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer