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Hear Res. 2011 Jan;271(1-2):16-25. doi: 10.1016/j.heares.2010.09.001. Epub 2010 Sep 17.

An expanded role for the dorsal auditory pathway in sensorimotor control and integration.

Author information

  • Department of Physiology and Biophysics, Laboratory of Integrative Neuroscience and Cognition, Georgetown University Medical Center, New Research Building, Room WP19, Washington, DC 20057-1460, USA. rauschej@georgetown.edu

Abstract

The dual-pathway model of auditory cortical processing assumes that two largely segregated processing streams originating in the lateral belt subserve the two main functions of hearing: identification of auditory "objects", including speech; and localization of sounds in space (Rauschecker and Tian, 2000). Evidence has accumulated, chiefly from work in humans and nonhuman primates, that an antero-ventral pathway supports the former function, whereas a postero-dorsal stream supports the latter, i.e processing of space and motion-in-space. In addition, the postero-dorsal stream has also been postulated to subserve some functions of speech and language in humans. A recent review (Rauschecker and Scott, 2009) has proposed the possibility that both functions of the postero-dorsal pathway can be subsumed under the same structural forward model: an efference copy sent from prefrontal and premotor cortex provides the basis for "optimal state estimation" in the inferior parietal lobe and in sensory areas of the posterior auditory cortex. The current article corroborates this model by adding and discussing recent evidence.

© 2010 Elsevier B.V. All rights reserved.

PMID:
20850511
[PubMed - indexed for MEDLINE]
PMCID:
PMC3021714
Free PMC Article

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