BIROn - Birkbeck Institutional Research Online

Nonverbal auditory agnosia with lesion to Wernicke's area

Saygin, A.P. and Leech, Robert and Dick, Frederic (2010) Nonverbal auditory agnosia with lesion to Wernicke's area. Neuropsychologia 48 (1), pp. 107-113. ISSN 0028-3932.

Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.neuropsychologia.2009....

Abstract

We report the case of patient M, who suffered unilateral left posterior temporal and parietal damage, brain regions typically associated with language processing. Language function largely recovered since the infarct, with no measurable speech comprehension impairments. However, the patient exhibited a severe impairment in nonverbal auditory comprehension. We carried out extensive audiological and behavioral testing in order to characterize M's unusual neuropsychological profile. We also examined the patient's and controls’ neural responses to verbal and nonverbal auditory stimuli using functional magnetic resonance imaging (fMRI). We verified that the patient exhibited persistent and severe auditory agnosia for nonverbal sounds in the absence of verbal comprehension deficits or peripheral hearing problems. Acoustical analyses suggested that his residual processing of a minority of environmental sounds might rely on his speech processing abilities. In the patient's brain, contralateral (right) temporal cortex as well as perilesional (left) anterior temporal cortex were strongly responsive to verbal, but not to nonverbal sounds, a pattern that stands in marked contrast to the controls’ data. This substantial reorganization of auditory processing likely supported the recovery of M's speech processing.

Item Type: Article
Keyword(s) / Subject(s): Environmental sounds, temporal cortex, aphasia, dissociation, fMRI
School or Research Centre: Birkbeck Schools and Research Centres > School of Science > Psychological Sciences
Depositing User: Administrator
Date Deposited: 05 Jan 2011 11:29
Last Modified: 17 Apr 2013 12:19
URI: http://eprints.bbk.ac.uk/id/eprint/2383

Archive Staff Only (login required)

Edit/View Item Edit/View Item