Dynamic visual information plays a critical role for spatial navigation in water but not on solid ground.

Details

Serval ID
serval:BIB_216CD4D90613
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Dynamic visual information plays a critical role for spatial navigation in water but not on solid ground.
Journal
Behavioural Brain Research
Author(s)
Sautter C.S., Cocchi L., Schenk F.
ISSN
0166-4328
Publication state
Published
Issued date
2008
Peer-reviewed
Oui
Volume
194
Number
2
Pages
242-245
Language
english
Abstract
In the Morris water maze (MWM) task, proprioceptive information is likely to have a poor accuracy due to movement inertia. Hence, in this condition, dynamic visual information providing information on linear and angular acceleration would play a critical role in spatial navigation. To investigate this assumption we compared rat's spatial performance in the MWM and in the homing hole board (HB) tasks using a 1.5 Hz stroboscopic illumination. In the MWM, rats trained in the stroboscopic condition needed more time than those trained in a continuous light condition to reach the hidden platform. They expressed also little accuracy during the probe trial. In the HB task, in contrast, place learning remained unaffected by the stroboscopic light condition. The deficit in the MWM was thus complete, affecting both escape latency and discrimination of the reinforced area, and was thus task specific. This dissociation confirms that dynamic visual information is crucial to spatial navigation in the MWM whereas spatial navigation on solid ground is mediated by a multisensory integration, and thus less dependent on visual information.
Keywords
animals , avoidance learning/physiology , behavior, animal/physiology , male , maze learning/physiology , nonlinear dynamics , orientation/drug effects , orientation/physiology , rats , rats, long-evans , reaction time/physiology , space perception/physiology , spatial behavior/physiology
Pubmed
Web of science
Create date
12/10/2009 13:03
Last modification date
20/08/2019 12:58
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