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The Auditory Agnosias: a Short Review of Neurofunctional Evidence
Gabriele Miceli1, Antea Caccia2
1Professor of Neurology, Center for Mind/Brain Studies, University of Trento, Trento, Italy. gabriele.miceli@unitn.it.
Current Neurology and Neuroscience Reports
|September 25, 2023
Summary
Pure auditory agnosia, a rare condition affecting sound recognition, presents diverse neurological and functional profiles. Lesion sites and co-occurring cognitive issues significantly influence its varied presentations.
Area of Science:
- Neuroscience
- Neurology
- Cognitive Science
Background:
- Pure auditory agnosia is a rare disorder characterized by the inability to recognize sounds despite intact hearing.
- Traditional views are challenged by recent neuroimaging and patient studies, highlighting complex underlying mechanisms.
Purpose of the Study:
- To investigate the neurofunctional correlates of pure auditory agnosia and its subtypes (global, verbal, nonverbal).
- To analyze hemispheric lateralization, lesion site, and associated cognitive impairments based on historical and recent data.
Main Methods:
- Systematic review and analysis of 116 anatomoclinical reports published between 1893 and 2022.
- Emphasis on correlating lesion locations with specific auditory agnosia phenotypes and cognitive deficits.
Main Results:
- Global auditory agnosia often linked to bilateral temporal lobe damage.
- Verbal auditory agnosia strongly associated with lesions in the language-dominant hemisphere.
- Nonverbal auditory agnosia correlates are less clear, with evidence for unilateral damage in either hemisphere.
Conclusions:
- Pure auditory agnosias are neurologically and functionally heterogeneous conditions.
- Phenotypic expression is influenced by lesion site and co-occurring cognitive impairments.
- Future research should integrate patient data with neurotypical studies for a comprehensive understanding.
Keywords:
Auditory pathwaysGlobal auditory agnosiaHemispheric asymmetriesNonverbal auditory agnosiaPure auditory agnosiaVerbal auditory agnosiaMore Related Videos
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