NDLI: Effect of low gravitational stimulation on the perception of target elevation: Role of spatial expertise

Content Provider	Springer Nature Link
Author	Carriot, Jérôme Charles, Corinne Huffenus, Anne Fabienne Nougier, Vincent Raphel, Christian Cian, Corinne
Copyright Year	2005
Abstract	To examine the interindividual differences in the judgment of the visually perceived eye level (VPELupright position) and of the visually perceived apparent zenith (VPAZ-supine position) when the subject is subjected to low gravitational-inertial force (GIF), we independently altered GIF in two different populations: control subjects and spatial experts. Subjects were instructed to set a luminous target to the eye level while they were in total darkness and motionless or undergoing low radial acceleration with respect to the threshold of the otolithic system (0.015–1.67 m/sec2 for the VPEL and 0.55–2.19 m/sec2 for the VPAZ, respectively). Results showed that (1) low GIFs, close to those met during daily life, induced an eye level lowering in the upright and supine positions for the control group, and (2) the spatial expertise modified the influence of low GIF. Whereas an oculogravic illusion was found for the control group, this phenomenon was absent (VPAZ) or weaker (VPEL) for the spatial experts. Thus, the relations that the subjects maintain with their spatial environment and the knowledge acquired through experience modify the processing of sensory information and the perceptive construction resulting from it. The interindividual differences in sensitivity to the oculogravic illusion are discussed in terms of sensory dominance and of a better efficiency in the use of the available sensory information.
Starting Page	1044
Ending Page	1051
Page Count	8
File Format	PDF
ISSN	00315117
Journal	Perception & Psychophysics
Volume Number	67
Issue Number	6
e-ISSN	15325962
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Cognitive Psychology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Sensory Systems Psychology

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