Journal article
Multisensory interactions in primate auditory cortex: fMRI and electrophysiology
Hearing research, Vol.258(1-2), pp.80-88
12/01/2009
DOI: 10.1016/j.heares.2009.02.011
PMID: 19269312
Abstract
Recent studies suggest that multisensory integration does not only occur in higher association cortices but also at early stages of auditory processing, possibly in primary or secondary auditory cortex. Support for such early multisensory 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. (C) 2009 Elsevier B.V. All rights reserved.
Details
- Title: Subtitle
- Multisensory interactions in primate auditory cortex: fMRI and electrophysiology
- Creators
- Christoph Kayser - Max Planck Institute for Biological CyberneticsChristopher I. Petkov - Max Planck Institute for Biological CyberneticsNikos K. Logothetis - Max Planck Institute for Biological Cybernetics
- Resource Type
- Journal article
- Publication Details
- Hearing research, Vol.258(1-2), pp.80-88
- Publisher
- Elsevier
- DOI
- 10.1016/j.heares.2009.02.011
- PMID
- 19269312
- ISSN
- 0378-5955
- eISSN
- 1878-5891
- Number of pages
- 9
- Grant note
- Max Planck Society; Foundation CELLEX Alexander von Humboldt Foundation
- Language
- English
- Date published
- 12/01/2009
- Academic Unit
- Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984360134202771
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