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Properties of curvilinear vection.

  • Sauvan XM Department of Neurology, University Hospital, Zurich, Switzerland.
  • Bonnet C
  • 1993-04-01
Published in:
  • Perception & psychophysics. - 1993
Adult
Contrast Sensitivity
Female
Fixation, Ocular
Humans
Male
Photic Stimulation
Space Perception
Visual Fields
Visual Perception
English Approximately linear relationships were observed between contrast, spatial frequency, temporal frequency, or velocity of stimulation and perceived velocity of curvilinear vection--that is, a visually induced self-motion in a curved path. Similarly, linear relationships were also found between the perceived degree of curvature of curvilinear vection and spatial frequency or velocity of stimulation. Since the perceived velocity of curvilinear vection varies with contrast, spatial frequency, temporal frequency, and angular velocity, and the perceived degree of curvature of curvilinear vection varies only with spatial frequency and angular velocity, peripheral vision is not sufficient for computing accurately the curvilinear component of induced self-motion in a curved path. Concurrently, it was shown that the perceived direction of curvilinear vection is not always unambiguously perceived (Sauvan & Bonnet, 1989). Consequently, it is suggested that two different types of visual processing, which involve the peripheral or the central vision, underlie the processing of curvilinear vection.
Language
  • English
Open access status
bronze
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https://sonar.ch/global/documents/77597
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