Accession Number : AD0716645

Title :   Two-Flash Thresholds as a Function of Comparison Stimulus Duration,

Corporate Author : CIVIL AEROMEDICAL INST OKLAHOMA CITY OKLA

Personal Author(s) : Lewis ,Mark F. ; Mertens,Henry W.

Report Date : SEP 1970

Pagination or Media Count : 7

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. (Author)

Descriptors :   (*VISION, *SENSES(PHYSIOLOGY)), THRESHOLDS(PHYSIOLOGY), VISUAL SIGNALS, VISUAL PERCEPTION, SENSES(PHYSIOLOGY)

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE