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  Sensory and cognitive mechanisms for preattentive change detection in auditory cortex

Opitz, B., Schröger, E., & von Cramon, D. Y. (2005). Sensory and cognitive mechanisms for preattentive change detection in auditory cortex. European Journal of Neuroscience: European Neuroscience Association, 21(2), 531-535. doi:10.1111/j.1460-9568.2005.03839.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-D8B2-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-1B88-E
Genre: Journal Article

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opitz_sensory_ejn.pdf (Publisher version), 240KB
 
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 Creators:
Opitz, Bertram1, Author              
Schröger, Erich, Author
von Cramon, D. Yves2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Department Cognitive Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634563              

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Free keywords: fMRI; Mismatch negativity; MMN; Oddball paradigm; Sensory memory
 Abstract: In order to react adequately to potentially relevant information outside the focus of attention, our brain preattentively scans the acoustic environment for irregularities. Two different mechanisms are currently discussed: (i) a sensory one based on differential states of refractoriness of neurons sensitive to the features of a regular event and of neurons sensitive to features of an irregular event; (ii) a cognitive one based on a comparison of short-lived memory representations encoding current stimulation and the invariance inherent in recent recurrent stimulation. Here, we identified regions that mediate either of the two mechanisms by combining functional magnetic resonance imaging with an experimental protocol controlling for refractoriness. The sensory mechanism was associated with activity in the primary auditory cortex, whereas the cognitive one revealed activity in nonprimary auditory areas in the anterior part of Heschl's Gyrus. Moreover, it turned out that in the traditional oddball paradigm both mechanisms contribute to irregularity detection.

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Language(s): eng - English
 Dates: 2005
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 239834
Other: P7118
DOI: 10.1111/j.1460-9568.2005.03839.x
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Title: European Journal of Neuroscience : European Neuroscience Association
  Other : Eur. J. Neurosci
Source Genre: Journal
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Publ. Info: Oxford, UK : Published on behalf of the European Neuroscience Association by Oxford University Press
Pages: - Volume / Issue: 21 (2) Sequence Number: - Start / End Page: 531 - 535 Identifier: ISSN: 0953-816X
CoNE: https://pure.mpg.de/cone/journals/resource/954925575988