Evidence that the mismatch negativity to pattern violence does not vary with deviant probability

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DOIResolve DOI: http://doi.org/10.1016/j.clinph.2011.04.018
AuthorSearch for: ; Search for:
TypeArticle
Journal titleClinical Neurophysiology
Volume122
Issue11
Pages22362245; # of pages: 10
SubjectMismatch negativity; Probability; Sensory memory; N1; Memory comparison
AbstractObjective To determine whether the classic inverse relationship between the amplitude of the mismatch negativity (MMN) and deviant probability can be demonstrated to violations of a concrete rule pattern. Methods In Experiment 1, oddball and patterned auditory sequences were presented with high (p = 0.16) and rare (p = 0.02) deviant probability. In Experiment 2, a slightly different pattern was presented with high, moderate (p = 0.08), low (p = 0.04), and rare deviant probability. In Experiment 3, deviants in the patterns from Experiments 1 and 2 were actively detected at high and rare probability. Results In Experiment 1, the amplitude of the MMN varied inversely with deviant probability in both conditions. In Experiment 2, no effect of probability was observed. Experiment 3 supported the hypothesis that high deviant probability causes instability in the memory representation of the standard in the pattern from Experiment 1. Conclusions The amplitude of the MMN to concrete pattern violations does not vary with deviant probability. Significance The amplitude of the MMN may not vary with deviant probability. Once a stable memory representation is formed for the standard regularities in an auditory sequence, further examples may not strengthen that representation.
Publication date
LanguageEnglish
AffiliationNRC Institute for Biodiagnostics; National Research Council Canada
Peer reviewedYes
NPARC number19703841
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Record identifier41b470d6-5c42-41aa-99cd-a62255adcc81
Record created2012-03-28
Record modified2016-05-09
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