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  Thalamic and parietal brain morphology predicts auditory category learning

Scharinger, M., Henry, M., Meyer, L., Erb, J., & Obleser, J. (2014). Thalamic and parietal brain morphology predicts auditory category learning. Neuropsychologia, 53, 75-83. doi:10.1016/j.neuropsychologia.2013.09.012.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-5110-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-7FA1-9
Genre: Journal Article

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 Creators:
Scharinger, Mathias1, Author              
Henry, Molly1, Author              
Meyer, Lars2, Author              
Erb, Julia1, Author              
Obleser, Jonas1, Author              
Affiliations:
1Max Planck Research Group Auditory Cognition, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_751545              
2Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              

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Free keywords: Auditory categorization; Acoustic cues; Cue utilization; Voxel-based morphometry; Auditory thalamus; Parietal cortex
 Abstract: Auditory categorization is a vital skill involving the attribution of meaning to acoustic events, engaging domain-specific (i.e., auditory) as well as domain-general (e.g., executive) brain networks. A listener's ability to categorize novel acoustic stimuli should therefore depend on both, with the domain-general network being particularly relevant for adaptively changing listening strategies and directing attention to relevant acoustic cues. Here we assessed adaptive listening behavior, using complex acoustic stimuli with an initially salient (but later degraded) spectral cue and a secondary, duration cue that remained nondegraded. We employed voxel-based morphometry (VBM) to identify cortical and subcortical brain structures whose individual neuroanatomy predicted task performance and the ability to optimally switch to making use of temporal cues after spectral degradation. Behavioral listening strategies were assessed by logistic regression and revealed mainly strategy switches in the expected direction, with considerable individual differences. Gray-matter probability in the left inferior parietal lobule (BA 40) and left precentral gyrus was predictive of “optimal” strategy switch, while gray-matter probability in thalamic areas, comprising the medial geniculate body, co-varied with overall performance. Taken together, our findings suggest that successful auditory categorization relies on domain-specific neural circuits in the ascending auditory pathway, while adaptive listening behavior depends more on brain structure in parietal cortex, enabling the (re)direction of attention to salient stimulus properties.

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Language(s): eng - English
 Dates: 2013-09-022013-05-282013-09-042013-09-132014-01-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuropsychologia.2013.09.012
PMID: 24035788
Other: Epub 2013
 Degree: -

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Title: Neuropsychologia
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Elsevier
Pages: - Volume / Issue: 53 Sequence Number: - Start / End Page: 75 - 83 Identifier: ISSN: 0028-3932
CoNE: /journals/resource/954925428258