Linked Life Data

11248001

Source:http://linkedlifedata.com/resource/pubmed/id/11248001

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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2001-3-15
pubmed:abstractText
We investigated the convergence of somatosensory and auditory inputs in within subregions of macaque auditory cortex. Laminar current source density and multiunit activity profiles were sampled with linear array multielectrodes during penetrations of the posterior superior temporal plane in three macaque monkeys. At each recording site, auditory responses to binaural clicks, pure tones, and band-passed noise, all presented by earphones, were compared with somatosensory responses evoked by contralateral median nerve stimulation. Subjects were awake but were not required to discriminate the stimuli. Borders between A1 and surrounding belt regions were identified by mapping best frequency and stimulus preferences and by subsequent histological analysis. Regions immediately caudomedial to A1 had robust somatosensory responses co-represented with auditory responses. In these regions, both somatosensory and auditory response profiles had "feedforward" patterns; initial excitation beginning in Lamina 4 and spreading to extragranular laminae. Auditory and somatosensory responses displayed a high degree of temporal overlap. Anatomical reconstruction indicated that the somatosensory input region includes, but may not be restricted to, the caudomedial auditory association cortex. As was earlier reported for this region, auditory frequency tuning curves were broad and band-passed noise responses were larger than pure tone responses. No somatosensory responses were observed in A1. These findings suggest a potential neural substrate for multisensory integration at an early stage of auditory cortical processing.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-3077
pubmed:author
pubmed:issnType
Print
pubmed:volume
85
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1322-7
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Somatosensory input to auditory association cortex in the macaque monkey.
pubmed:affiliation
Cognitive Neuroscience and Schizophrenia Program, Nathan Kline Institute for Psychiatric Research, Orangeburg 10962, New York, New York 10003, USA. schrod@nki.rfmh.org
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.