| Effect of frequency deviance direction on performance and mismatch negativity. | |
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MedLine Citation:
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PMID: 22262539 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The mismatch negativity (MMN) component of the auditory event-related potential is associated with automatic perceptual inference concerning changes in auditory stimulation. Recent studies have addressed the question whether performance and MMN is affected by the direction of frequency deviance. In the present study, the frequency MMN and performance is investigated during an auditory identification task. Specifically, we examined the effect of positive and negative differences between the present stimulus and the previous response frequencies on performance as well as on the characteristics of stimulus-locked ERPs and brain activation maps. The results show that frequency deviants creating mismatch conditions increase the likelihood of error commission. The decrease in performance achieves statistical significance in the case of positive frequency deviants. In the latter case, ERP amplitude values of the Fz electrode at 164 ms after stimulus onset are statistically larger for mismatch as opposed to no-mismatch condition. This corresponds to significance differences in the activation maps at Brodmann area 11, superior frontal gyrus, and the frontal lobe. The present findings revealed dissociations in behavioral and ERP responses in the processing of positive and negative frequency deviance, lending support to the notion that MMN is more sensitive to increments than to decrements in frequency. |
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Authors:
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Irene S Karanasiou; Charalabos Papageorgiou; Miltiades Kyprianou; Eleni I Tsianaka; George K Matsopoulos; Errikos M Ventouras; Nikolaos K Uzunoglu |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of integrative neuroscience Volume: 10 ISSN: 0219-6352 ISO Abbreviation: J. Integr. Neurosci. Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-01-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101156357 Medline TA: J Integr Neurosci Country: England |
Other Details:
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Languages: eng Pagination: 525-36 Citation Subset: IM |
Affiliation:
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Institute of Communications and Computer Systems, School of Electrical and Computer Engineering, National Technical University of Athens, Greece. ikaran@esd.ece.ntua.gr. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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