MISC

2009年1月

Perceived range, perceived velocity, and perceived duration of the body rotating in the frontal plane

ATTENTION PERCEPTION & PSYCHOPHYSICS
  • Atsuki Higashiyama
  • ,
  • Kazuo Koga

71
1
開始ページ
104
終了ページ
115
記述言語
英語
掲載種別
DOI
10.3758/APP.71.1.104
出版者・発行元
SPRINGER

We investigated perceived range, perceived velocity, and perceived duration of the body rotating in the frontal plane (in roll). Specifically, to examine how shear to the otoliths in the inner ears and tactile pressure to the trunk affect judgments of range and velocity, in two experiments, we manipulated rotating range (30 degrees-160 degrees), rotating velocity (1.8 degrees/sec to 9.60 degrees/sec), mean tilt of the body (-60 degrees, 0 degrees, and 60 degrees), and exposure to the visual vertical. Thirty-three normal or blindfolded participants made verbal judgments of range, velocity, and duration for each combination of these factors. The exponents of the power functions fitted to these judgments were, as a first approximation, .94, .61, and .84 for range, velocity, and duration, respectively, and perceived velocity was proportional to the ratio of perceived range to perceived duration (r = .91). These results suggest that the vestibular and somatosensory inputs are effective on judgments of range, but less so on judgments of velocity, and that perceived velocity may be determined as a ratio of perceived range to perceived duration. In addition, we found that (1) when the range the body has traveled is constant, the perceived range increases as the objective velocity decreases (proprioceptive T effect); (2) self-motion through the tilted roll sometimes enlarges perceived range and perceived duration but reduces perceived velocity; and (3) the exposure to the visual vertical reduces variability of judgments for range and velocity and also reduces perceived range and perceived velocity of self-motion within a small range through the vertical roll.

リンク情報
DOI
https://doi.org/10.3758/APP.71.1.104
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000262908300011&DestApp=WOS_CPL
ID情報
  • DOI : 10.3758/APP.71.1.104
  • ISSN : 1943-3921
  • Web of Science ID : WOS:000262908300011

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