Relative Distance Perception Through Expanding and Contracting Motion and the Role of Propriospecific Information in Walking

Hiroyuki Ito, Katsuya Matsunaga

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Two experiments using a new device that correlates simulated optic flow with forward and backward head motions are reported. The first experiment tested the effectiveness of the rate of optical expansion/contraction as a cue for relative distance perception; the second experiment examined the role of propriospecific information in determining whether or not a simulated wall was perceived to be moving relative to the ground. In walking along the line of sight in a stationary environment, the image of a nearer object expands/contracts more than the image of objects farther away. In Experiment 1, observers’ abilities to judge which of two walls was nearer, according to expanding/contracting patterns, were tested. The results show that both walking and stationary observers can detect the order of depth from expansion patterns but not from the contraction patterns. Experiment 2 assessed the role of propriospecific information for specifying the motion or nonmotion of a simulated “wall” relative to the ground. The results show the importance of synchrony between expansion/contraction patterns and head motion. Whether or not an observer is obtaining information actively does not seem to matter for perceiving relative distance but it does matter in perceiving object motion.

Original languageEnglish
Pages (from-to)113-130
Number of pages18
JournalEcological Psychology
Volume2
Issue number2
DOIs
Publication statusPublished - Jan 1 1990
Externally publishedYes

Fingerprint

Distance Perception
walking
Walking
contraction
experiment
Experiments
Head
Optic Flow
optics
Aptitude
Cues
synchrony
Optics
Equipment and Supplies

All Science Journal Classification (ASJC) codes

  • Social Psychology
  • Computer Science(all)
  • Ecology, Evolution, Behavior and Systematics
  • Experimental and Cognitive Psychology

Cite this

Relative Distance Perception Through Expanding and Contracting Motion and the Role of Propriospecific Information in Walking. / Ito, Hiroyuki; Matsunaga, Katsuya.

In: Ecological Psychology, Vol. 2, No. 2, 01.01.1990, p. 113-130.

Research output: Contribution to journalArticle

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