Two-flash thresholds as a function of comparison stimulus duration.

Details

• Creators:
  Lewis, Mark F. ; Mertens, Henry W.
• Corporate Creators:
  Civil Aeromedical Institute
• Corporate Contributors:
  United States. Office of Aviation Medicine
• Subject/TRT Terms:
  • Strobes
  • Signals
  • Warning signals
  • Navigation devices
  • Navigation lights
  • Beacons
  • Luminance
  • Luminous intensity
  • Brightness
  • Peripheral vision
  More +
• Publication/ Report Number:
  AM 70-15 ; DOT/FAA/AM-70/15
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  OAM report.
• Corporate Publisher:
  Civil Aerospace Medical Institute
• Abstract:
  The proposal that two-flash thresholds may be used as direct measures of the critical duration (tc) of Bloch's law was tested. Two-flash threshold was found to be an increasing function of comparison stimulus duration for durations of 3 to 22 msec. indicating that two-flash threshold does not measure tc. Increasing luminance in the range of 1.0 to 3.0 log mL. enhanced the effect. Application of these data to specifications for strobe lights used as anticollision devices is discussed.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20955/dot_20955_DS1.pdf
• File Type:
  [PDF - 278.69 KB]
• Collection(s):
  US Transportation Collection ; FAA Civil Aerospace Medical Institute
• Main Document Checksum:
  urn:sha-512:9ff25d2e6644dbc04d30be2e5f3a9bfa92abca99721b2e1da11baed791bbf90473a4e88258baf91b11f6057d5a23d1597d7400799ae6206fb96b9c387e805647