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Perception of stationary and moving sound following unilateral cortectomy.

Lewald, J. and Peters, S. and Corballis, M. C. and Hausmann, M. (2009) 'Perception of stationary and moving sound following unilateral cortectomy.', Neuropsychologia., 47 (4). pp. 962-971.


The perception of motion is an essential prerequisite to responding adequately to the dynamic aspects of sensory information in the environment. The neural substrates of auditory motion processing are, at present, still a matter of debate. It has been hypothesized that motion information is, as in the visual system, processed separately from other aspects of auditory information, such as stationary location. Here we report data on auditory perception of stationary and motion stimuli from a subject with right-sided resection of the anterior temporal-lobe region including medial aspects of Heschl's gyrus, and from three subjects with unilateral (right-sided or left-sided) hemispherectomy. All these subjects had undergone cortectomy decades earlier. The subjects with hemispherectomy were completely unable to perceive auditory motion, but showed slight to moderate deficits in judging stationary location. The subject with temporal lobectomy exhibited quite similar stationary auditory deficits as found in the subjects with hemispherectomy, but was completely normal in judging auditory motion. Thus, there was a clear dissociation of the effects of unilateral temporal lobectomy and hemispherectomy on auditory motion perception. Collectively, these findings suggest that the unilateral anterior temporal-lobe region plays a significant role in the analysis of stationary, but not moving, sound. One may assume that the cortical “motion network” is distinct from the “stationary network”, and is located either in the most posterior aspects of temporal lobe, or in non-temporal, most likely parietal, areas.

Item Type:Article
Keywords:Auditory localization, Space perception, Motion deafness, Temporal lobe, Auditory cortex.
Full text:Full text not available from this repository.
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Date accepted:No date available
Date deposited:No date available
Date of first online publication:March 2009
Date first made open access:No date available

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