Auditory psychophysical scaling exposure effects: magnitude estimation and cross-modal matching.
The purpose of the present study was to investigate possible effects of exposure upon suprathreshold psychological responses when auditory magnitude estimation and cross-modal matching with audition as the standard are conducted within the same experiment. Four groups of 10 subjects each whose over-all age range was 18 to 23 yr. were employed. During the cross-modal matching task the Groups 1 and 2 subjects adjusted a vibrotactile stimulus presented to the dorsal surface of the tongue and the Groups 3 and 4 subjects adjusted a vibrotactile stimulus presented to the thenar eminence of the right hand to match binaurally presented auditory stimuli. The magnitude-estimation task was conducted before the cross-modal matching task for Groups 1 and 3 and the cross-modal matching task was conducted before the magnitude-estimation task for Groups 2 and 4. The psychophysical methods of magnitude estimation and cross-modal matching showed no effect of one upon the other when used in the same experiment.
Fucci
D
D
School of Hearing & Speech Sciences, Ohio University, Athens 45701.
Petrosino
L
L
Harris
D
D
Randolph-Tyler
E
E
D000293:Adolescent; D000328:Adult; D001288:Attention; D004193:Discrimination Learning; D004292:Dominance, Cerebral; D005260:Female; D006801:Humans; D008144:Loudness Perception; D008297:Male; D010897:Pitch Discrimination; D012684:Sensory Thresholds; D014110:Touch; D014732:Vibration