Accession Number : AD0628188

Title :   EFFECT OF INTENSITY CHANGES IN AUXILIARY STIMULI ON AUDITORY AND VISUAL SIGNAL DETECTION,

Corporate Author : ELECTRONIC SYSTEMS DIV L G HANSCOM FIELD MASS DECISION SCIENCES LAB

Personal Author(s) : Watkins,William H.

Report Date : DEC 1965

Pagination or Media Count : 63

Abstract : Results of automated tone detection experiments are reported. Subjects were required to identify one of four short intervals as having contained a weak, earphone-presented, auditory signal. These experiments involved approximately 20,000 trails. Each experiment employed at least two lighting conditions. In general, when the light source intensified during the intervals, detection was superior to that occurring when the light diminished at corresponding times. The findings are compared with the results of analogous experiments involving visual signal detection under several conditions of auditory stimulation. Some possible explanations for consistencies in the two kinds of experiments are considered, and individual differences are discussed. (Author)

Descriptors :   (*AUDITORY PERCEPTION, PSYCHOLOGICAL TESTS), (*VISUAL PERCEPTION, PSYCHOLOGICAL TESTS), LIGHT, SOUND, INTENSITY, ANALYSIS OF VARIANCE

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE