The spiral aftereffect : influence of stimulus size and viewing distance on the duration of illusory motion.

Details

• Creators:
  Collins, William E. ; Schroeder, David J.
• Corporate Creators:
  United States. Office of Aviation Medicine
• Subject/TRT Terms:
  • Air pilots
  • Motion
  • Rotation
  • Spirals
  • Motion perception
  • Visual perception
  • Vision
  • Size
  • Distance
  • Night vision
  More +
• Publication/ Report Number:
  Am 68-10 ; DOT/FAA/AM-68/10
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  Civil Aerospace Medical Institute
• Abstract:
  The study examined some effects of stimulus size and distance on the persistence of one type of illusory motion, viz., the spiral aftereffect (SAE). Duration of SAE was investigated with stimuli of 2, 4, 8, 12, and 16 inches in diameter. The distance between the observers and the rotating spirals was varied to produce visual angles between 1 deg. 12 min. and 18 deg. 56 min. of arc. Data indicate that the duration of illusory motion reaches peak values between approximately 2 deg. -4 deg. of visual angle.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20848/dot_20848_DS1.pdf
• File Type:
  [PDF - 404.92 KB]
• Collection(s):
  FAA Civil Aerospace Medical Institute ; US Transportation Collection
• Main Document Checksum:
  urn:sha-512:4ee9e9e8ab32f9c95f3029faea268f1e39c801308f1d40fd314aa9853eedc3f5f40011cd7d0eeeab6b82caca56c9f4260494bc7c998af8456ce4dd264961a8c8