Breaking the rule: mismatch negativity is affected by top-down predictive information
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1
Institute of Psychology I, University of Leipzig, Germany
The mismatch negativity component (MMN) of the human event related brain potential reflects neural processes related to the detection of irregularities in acoustic stimulation. MMN was supposed to be unaffected by top-down predictive information as it is also elicited when participants have full knowledge about an upcoming deviation, e.g. when it was predicted by an attended visual cue. Here, however, we show that top-down predictive information can affect the processes underlying MMN generation. MMN amplitude was found to be smaller in response to self-generated expected deviants compared to unexpected deviants and deviants where no top-down predictive information was available. It is argued that the processes underlying MMN generation, in particular the generation of the memory trace serving for the memory comparison, are accessible to top-down predictive information and not restricted to bottom-up driven regularity violations.
Conference:
MMN 09
Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications, Budapest, Hungary, 4 Apr - 7 Apr, 2009.
Presentation Type:
Poster Presentation
Topic:
Poster Presentations
Citation:
Widmann
A and
Schroger
E
(2009). Breaking the rule: mismatch negativity is affected by top-down predictive information.
Conference Abstract:
MMN 09
Fifth Conference on Mismatch Negativity (MMN) and its Clinical and Scientific Applications.
doi: 10.3389/conf.neuro.09.2009.05.105
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Received:
26 Mar 2009;
Published Online:
26 Mar 2009.
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Correspondence:
Andreas Widmann, Institute of Psychology I, University of Leipzig, Leipzig, Germany, widmann@uni-leipzig.de