Document Detail

The effect of perceptual grouping on the mismatch negativity.
MedLine Citation:
PMID:  11347876     Owner:  NLM     Status:  MEDLINE    
The mismatch negativity (MMN) was used as a probe to evaluate changes, with age, of transient auditory memory. Subjects were 16 young (M = 23 years) and 16 old (M = 72 years) people. Standard auditory stimuli were presented in trains of eight tones (1000 Hz) with either a I-s or 8-s intertrain interval (ITI). Occasionally, the first stimulus of a train was replaced with a 1200 Hz tone (deviant). The MMN was recorded while subjects watched a silent movie and ignored the sounds. Both groups of subjects showed an MMN response to deviant stimuli under the 1-s ITI condition, but MMNs were only seen for some subjects under the 8-s ITI condition. After MMN recording, subjects performed a discrimination task to the tones used for recording MMNs. Accuracy for both groups was near 100% at both ITIs. These results suggest that generation of MMN is a function of the perceptual grouping of the acoustical stimuli and that the integrity of perceptual grouping may be maintained with increased age.
H Gaeta; D Friedman; W Ritter; J Cheng
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Psychophysiology     Volume:  38     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-05-11     Completed Date:  2001-06-21     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  316-24     Citation Subset:  IM    
Cognitive Electrophysiology Laboratory, New York State Psychiatric Institute, New York 10032, USA.
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MeSH Terms
Aging / psychology
Auditory Perception / physiology*
Memory / physiology*
Grant Support

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