Document Detail

Sound energy and the magnitude of change: effects on mismatch negativity.
MedLine Citation:
PMID:  21278614     Owner:  NLM     Status:  Publisher    
The mismatch negativity (MMN) of event-related potential generally increases in amplitude, as a function of magnitude of change. This study examined whether this relation holds true for intensity decrement, in which the stimulus energy that conveys the change falls in inverse proportion to magnitude of change. The MMN was recorded from healthy young adults for intensity decrements of 10, 20, 30, 40, and 50 dB. As the change increased, the MMN amplitude also increased first and thereafter diminished; thus, an inverted U-shaped relation was found between the MMN amplitude and the magnitude of change. These results, therefore, suggest a possible interplay between the energy of deviant stimulus and magnitude of change in the MMN elicitation.
Rika Takegata; Roope Heikkilä; Risto Näätänen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-1-26
Journal Detail:
Title:  Neuroreport     Volume:  -     ISSN:  1473-558X     ISO Abbreviation:  -     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-1-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9100935     Medline TA:  Neuroreport     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
aCognitive Brain Research Unit, Institute of Behavioral Sciences, University of Helsinki, Finland bDepartment of Psychology, University of Tartu, Estonia cCenter for Functionally Integrative Neuroscience, Aarhus University, Denmark.
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