Comparison of auditory deficits associated with neglect and auditory cortex lesions

Neuropsychologia
Alexander GutschalkClaudia Jansen

Abstract

In contrast to lesions of the visual and somatosensory cortex, lesions of the auditory cortex are not associated with self-evident contralesional deficits. Only when two or more stimuli are presented simultaneously to the left and right, contralesional extinction has been observed after unilateral lesions of the auditory cortex. Because auditory extinction is also considered a sign of neglect, clinical separation of auditory neglect from deficits caused by lesions of the auditory cortex is challenging. Here, we directly compared a number of tests previously used for either auditory-cortex lesions or neglect in 29 controls and 27 patients suffering from unilateral auditory-cortex lesions, neglect, or both. The results showed that a dichotic-speech test revealed similar amounts of extinction for both auditory cortex lesions and neglect. Similar results were obtained for words lateralized by inter-aural time differences. Consistent extinction after auditory cortex lesions was also observed in a dichotic detection task. Neglect patients showed more general problems with target detection but no consistent extinction in the dichotic detection task. In contrast, auditory lateralization perception was biased toward the right in neglect...Continue Reading

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Citations

Sep 8, 2015·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Alexander GutschalkMarlies Vogt-Schaden
Jul 24, 2012·The European Journal of Neuroscience·Liane Königs, Alexander Gutschalk
Oct 28, 2014·Human Brain Mapping·Alexander Gutschalk, Iris Steinmann
May 21, 2016·Journal of the Association for Research in Otolaryngology : JARO·Andrew R DykstraAlexander Gutschalk
Jan 4, 2017·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Andrew R DykstraAlexander Gutschalk

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