Academic Journals Database
Disseminating quality controlled scientific knowledge

Different Profiles of Verbal and Nonverbal Auditory Impairment in Cortical and Subcortical Lesions

Author(s): Reza Nilipour | Golbarg Tarighat Saber | Behrad Noudoost

Journal: Basic and Clinical Neuroscience
ISSN 2008-126X

Volume: 1;
Issue: 4;
Start page: 15;
Date: 2010;
Original page

Keywords: Basal Ganglia Lesion | Auditory Verbal Processing | Non-Verbal Sound Recognition | Ear Extinction | Hemispatial Inattention

A B S T R A C T Introduction:We investigated differential role of cortical and subcortical regions in verbal and non-verbal sound processing in ten patients who were native speakers of Persian with unilateral cortical and/or unilateral and bilateral subcortical lesions and 40 normal speakers as control subjects. Methods: The verbal tasks included monosyllabic, disyllabic dichotic and diotic tasks, and nonverbal tasks were semantic, asemantic recognition and sound localization. Results: Different profiles of ear extinction and hemispatial neglect was observed in our Left Hemisphere-Damaged (LHD) patients. Right Hemisphere-Damaged (RHD) patients with basal ganglia lesions showed mild hemi-spatial inattention of the ipsilesional and contralesional hemispace. LHD patients showed deficient performance in sound localization, but no evidence of significant impairment in sound localization was found in RHD patients except one. The patients with basal ganglia lesions irrespective of lesion side had impaired performance in semantic recognition. The results are suggestive of a network consisting of left and right basal ganglia and left cortical regions for non-verbal sound recognition. Discussion: The results also indicate a different role for left basal ganglia in sound object segregation versus sound localization.

Tango Jona
Tangokurs Rapperswil-Jona

     Save time & money - Smart Internet Solutions