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  Spatial reference in weightlessness: Perceptual factors and mental representations

Friederici, A., & Levelt, W. J. M. (1990). Spatial reference in weightlessness: Perceptual factors and mental representations. Perception and Psychophysics, 47, 253-266.

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 Creators:
Friederici, Angela1, Author           
Levelt, Willem J. M.2, Author           
Affiliations:
1Language Production Group Levelt , MPI for Psycholinguistics, Max Planck Society, Nijmegen, NL, ou_55206              
2Language Production Group Levelt, MPI for Psycholinguistics, Max Planck Society, ou_55206              

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 Abstract: The role of gravity in spatial coordinate assignment and the mental representation of space were studiedin three experiments, varying different perceptual cues systematically: the retinal, the visual background, the vestibular, and proprioceptive information. Verbal descriptions of visually presented arrays were required under different head positions (straight/tilt) and under different gravitational conditions (gravity present/gravity absent). The results of two experiments conducted with 2 subjects who participated in a space flight revealed that subjects are able to adequately assign positions in space in the absence of gravitational information, and that they do this by using their head—retinal coordinates as primary references. This indicates that they cognitively adapted to the perceptually new situation.The findings from a third experiment conducted with a larger group of subjects under a condition in which the gravitational information was present but irrelevant to the task being solved (subjects were in a-horizontal 8upine-position) show that subjects, in general, are flexible in using cues other than gravitational ones as references when the latter cannot serve as a referential system. These findings, together with the observation that consistent spatial assignment is possible evenimmediately after first exposure to the perceptually totally novel situation of weightlessness, seem to suggest that the mental representation of space, onto which given perceptual information is mapped, is independent of a particular percept.

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Language(s): eng - English
 Dates: 1990
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
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Title: Perception and Psychophysics
Source Genre: Journal
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Publ. Info: Austin, Tex., etc. : Psychonomic Society, etc.
Pages: - Volume / Issue: 47 Sequence Number: - Start / End Page: 253 - 266 Identifier: Other: 954925432372
ISSN: 0031-5117