Auditory motion direction encoding in auditory cortex and high-level visual cortex

Alink, Arjen; Euler, Felix; Kriegeskorte, Nikolaus; Singer, Wolf; Kohler, Axel (2012). Auditory motion direction encoding in auditory cortex and high-level visual cortex. Human brain mapping, 33(4), pp. 969-78. Hoboken, N.J.: Wiley-Blackwell 10.1002/hbm.21263

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The aim of this functional magnetic resonance imaging (fMRI) study was to identify human brain areas that are sensitive to the direction of auditory motion. Such directional sensitivity was assessed in a hypothesis-free manner by analyzing fMRI response patterns across the entire brain volume using a spherical-searchlight approach. In addition, we assessed directional sensitivity in three predefined brain areas that have been associated with auditory motion perception in previous neuroimaging studies. These were the primary auditory cortex, the planum temporale and the visual motion complex (hMT/V5+). Our whole-brain analysis revealed that the direction of sound-source movement could be decoded from fMRI response patterns in the right auditory cortex and in a high-level visual area located in the right lateral occipital cortex. Our region-of-interest-based analysis showed that the decoding of the direction of auditory motion was most reliable with activation patterns of the left and right planum temporale. Auditory motion direction could not be decoded from activation patterns in hMT/V5+. These findings provide further evidence for the planum temporale playing a central role in supporting auditory motion perception. In addition, our findings suggest a cross-modal transfer of directional information to high-level visual cortex in healthy humans.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Psychiatric Neurophysiology (discontinued)

UniBE Contributor:

Kohler, Axel

ISSN:

1065-9471

Publisher:

Wiley-Blackwell

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:38

Last Modified:

06 Dec 2013 13:37

Publisher DOI:

10.1002/hbm.21263

PubMed ID:

21692141

Web of Science ID:

000301341000017

URI:

https://boris.unibe.ch/id/eprint/15310 (FactScience: 222622)

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