Accession Number:

ADA229743

Title:

Auditory Pattern Memory

Descriptive Note:

Final rept. 1 Oct 1988-30 Sep 1990,

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF PSYCHOLOGY

Personal Author(s):

Report Date:

1990-10-31

Pagination or Media Count:

53.0

Abstract:

Three studies of temporal pattern perception were conducted. The listeners task was to determine whether or not two arrhythmic, tonal sequences formed the same temporal pattern. The first study tested the Pattern Correlation model. According to this model, the listener estimates the correlation between the pattern of time intervals marked by the tones in each sequence. Listener performance was characterized by an internal noise that is dependent on the average time between marker tones. The second study tested the effects of temporally compressing or expanding the stimuli. The transformations are common in speech and music an important feature of temporal pattern perception is the ability to recognize patterns as simular, despite such transformations. An additional internal noise, proportional to the magnitude of the difference between the pattern transformations, was postulated to describe performance. In the third study, the stimuli were present at different time delays and to separate earphone channels. At very short delays, waveform correlation is the likely comparison mechanism. At longer delays, pattern correlation is the probable mechanism, but this process is ineffective when the temporal patterns overlap. emk

Subject Categories:

  • Psychology
  • Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE