PMID: 8951442Nov 1, 1996Paper

Sound lateralization in patients with lesions including the auditory cortex: comparison of interaural time difference (ITD) discrimination and interaural intensity difference (IID) discrimination

Hearing Research
K YamadaM Shindo

Abstract

We examined sound lateralization using dichotic presentation of noises in 15 patients with left unilateral (12 patients) or bilateral (3 patients) temporal lobe lesions, that included the auditory cortex, and evaluated their abilities to discriminate interaural time and intensity difference (ITD, IID) separately. On the ITD discrimination test, discrimination thresholds in patients with left unilateral lesions were significantly higher than those in normal subjects, but all patients with left unilateral lesions could detect ITD. However, none of 3 patients with bilateral lesions could detect ITD. On the IID discrimination test, all patients with either unilateral or bilateral lesions could detect IID. IID discrimination thresholds in these patients were significantly higher than those in normal subjects. The auditory cortex plays an important role in discriminating both cues, but appears to be necessary for discriminating ITD.

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Citations

Feb 27, 2001·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·P UnganC Goksoy
Jun 29, 2006·Acta Oto-laryngologica·Rika OtakeMitsuya Suzuki
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Dec 11, 2002·The European Journal of Neuroscience·Nobuya FujikiRiitta Hari
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Mar 24, 2006·The European Journal of Neuroscience·Kentaro OnoKatsuei Shibuki
Dec 30, 2014·Brain & Development·Wakana FurushimaMasumi Inagaki
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Jun 3, 2005·Neuroreport·Takao Yabe, Kimitaka Kaga
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Nov 20, 2003·Neuroreport·Céline LancelotSéverine Samson
Aug 23, 2017·Proceedings of the National Academy of Sciences of the United States of America·Nathan C HigginsG Christopher Stecker

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