Echoic memory and language perception.
The purpose of this study was to analyze asymmetry in echoic memory as a relevant factor in language perception. Two experimental procedures were used: the presentation of temporally segmented words in fragments of 40, 80, 120 and 240 msec, separated by intervals of 40, 80, 120 and 240 msec, similar to the procedures used by A. W. F. Huggins (1975, Perception & Psychophysics, 18, 149-157); the presentation of two tones of short duration, "high" and "low," followed by an interference tone equivalent to the mean frequency of the two tones, closely following the procedure used by D. W. Massaro (1975, in D.W. Massaro (Ed.), Understanding language, New York: Academic Press). A stereophonic tape recorder was used as follows: one channel was employed for the presentation of the words or tones while, through the other channel, the subject received a white noise equivalent in intensity. All subjects carried out the task twice (right ear, left ear) and the order of presentation was counterbalanced. Only the first task showed differences between ears. Implications of the results are analyzed.
D000293:Adolescent; D000328:Adult; D004007:Dichotic Listening Tests; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D007802:Language; D008570:Memory, Short-Term / Q000502:physiology*; D010470:Perceptual Masking / Q000502:physiology; D013067:Speech Perception / Q000502:physiology; D013997:Time Factors