DURATION AND GROUPING IN AUDITORY EVENTS
There is ample literature on the influence of nontemporal variables on temporal properties of events (Allan, 1979). In the present research, it was hypothesised the influence of the vertical segregation of an auditory event on the global duration of the sequences. Two experiments were carried out in which the method of adjustment was used. In the first experiment the stimuli were sequences of three elements. Results demonstrated that the stimulus onset asychrony-within (SOA-within) decreases when an â€œemptyâ€ interval is placed between two sounds. In the second experiment, a white noise was placed between or after two sounds. Data analysis showed a significant reduction of perceptual duration in sequences with vertical segregation of the white noise. These results suggest that temporal dimension of the sequences is related to the perceptual grouping of the auditory events.