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Directionless vection: A new illusory self-motion perception.

Takeharu Seno1, Yuki Yamada, Stephen Palmisano

  • 1Faculty of Design, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan;

I-Perception
|March 15, 2013
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new visual illusion called directionless vection. This phenomenon allows people to experience illusory self-motion without a specific direction when viewing conflicting visual cues.

Keywords:
motion directionvectionvisual illusion

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Area of Science:

  • Visual perception
  • Neuroscience
  • Psychophysics

Background:

  • Vection, the sensation of self-motion, is typically induced by coherent visual flow.
  • Conflicting visual stimuli can alter or disrupt vection perception.

Purpose of the Study:

  • To introduce and characterize a novel visual illusion: directionless vection.
  • To investigate the conditions under which illusory self-motion can occur without a discernible direction.

Main Methods:

  • Simultaneous presentation of expanding and contracting optic flows.
  • Presentation of stimuli within the same depth plane.
  • Observer reports of perceived self-motion.

Main Results:

  • Observers reported experiencing vection, or illusory self-motion.
  • The perceived self-motion lacked a specific direction.
  • This occurred despite the presence of opposing directional cues in the optic flow.

Conclusions:

  • Directionless vection is a novel perceptual phenomenon.
  • It demonstrates that vection can be induced even with conflicting directional visual information.
  • This challenges traditional models of vection generation.