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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients
Published on: December 18, 2016
Central auditory processing impairment in patients with temporal lobe epilepsy.
Myung Woul Han1, Joong Ho Ahn, Joong Koo Kang
1Department of Otolaryngology, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, South Korea.
Epilepsy & Behavior : E&B
|January 29, 2011
Summary
Patients with temporal lobe epilepsy (TLE) often experience central auditory processing disorders. Impairments in sound recognition and localization are common, particularly with hippocampal sclerosis or longer epilepsy duration.
Area of Science:
- Neurology
- Audiology
- Neuroscience
Background:
- Temporal lobe epilepsy (TLE) can involve structural lesions or functional abnormalities.
- Central auditory processing disorder (CAPD) affects sound recognition, discrimination, ordering, grouping, and localization, especially non-speech sounds.
Purpose of the Study:
- To investigate the prevalence and characteristics of central auditory processing disorders in patients with TLE.
- To assess the impact of TLE laterality, hippocampal sclerosis, and epilepsy duration on auditory processing.
Main Methods:
- Evaluated 28 TLE patients with normal pure-tone audiometry.
- Administered frequency pattern, duration pattern, and dichotic tests.
- Correlated test results with TLE laterality, MRI findings (hippocampal sclerosis), and epilepsy duration.
Main Results:
- Abnormalities found in 78.6% (frequency pattern), 57.1% (duration pattern), and 20.6% (dichotic tests).
- No significant difference in CAPD based on TLE laterality.
- Patients with hippocampal sclerosis showed worse performance on frequency pattern tests.
- Longer epilepsy duration correlated with poorer performance on duration pattern and dichotic tests.
Conclusions:
- TLE patients are at risk for central auditory processing impairments.
- Hippocampal sclerosis and longer epilepsy duration exacerbate these auditory processing deficits.
- Auditory processing evaluation is recommended for TLE patients.
