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  Multisensory interactions in primate auditory cortex: fMRI and electrophysiology

Kayser, C., Petkov, C., & Logothetis, N. (2009). Multisensory interactions in primate auditory cortex: fMRI and electrophysiology. Hearing Research, 258(1-2), 80-88. doi:10.1016/j.heares.2009.02.011.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C1C8-E Version Permalink: http://hdl.handle.net/21.11116/0000-0002-BAF1-C
Genre: Journal Article

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Kayser, C1, 2, 3, Author              
Petkov, CI2, 3, Author              
Logothetis, NK2, 3, Author              
Affiliations:
1Research Group Physiology of Sensory Integration, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497808              
2Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Recent studies suggest that cross-modal integration does not only occur in higher association cortices but also in early stages of auditory processing, possibly in primary or secondary auditory cortex. Support for such early cross-modal influences comes from functional magnetic resonance imaging experiments in humans and monkeys. However we argue that the current understanding of neurovascular coupling and of the neuronal basis underlying the imaging signal does not permit the direct extrapolation from imaging data to properties of neurons in the same region. While imaging can guide subsequent electrophysiological studies, only these can determine whether and how neurons in auditory cortices combine information from multiple modalities. Indeed, electrophysiological studies only partly confirm the findings from imaging studies. While recordings of field potentials reveal strong influences of visual or somatosensory stimulation on synaptic activity even in primary auditory cortex, single unit studies find only a small minority of neurons as being influenced by non-acoustic stimuli. We propose the analysis of the information coding properties of individual neurons as one way to quantitatively determine whether the representation of our acoustic environment in (primary) auditory cortex indeed benefits from multisensory input.

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 Dates: 2009-12
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1016/j.heares.2009.02.011
BibTex Citekey: 5641
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Title: Hearing Research
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 258 (1-2) Sequence Number: - Start / End Page: 80 - 88 Identifier: ISSN: 0378-5955
CoNE: https://pure.mpg.de/cone/journals/resource/954925527845