Value of complex evoked auditory brainstem response in patients with post-stroke aphasia : prospective study

Abstract EN

Objective : To evaluate the perception of complex ABR (C-ABR) in aphasic patients and to compare it before and 3 months after management of stroke.

Methodology : A prospective study was conducted on 30 aphasic patients using C-ABR.

The results were compared within 2 weeks post-stroke and 3 months after management.

The results of aphasic patients were compared with normal subjects.

Results : The seven C-ABR waves regarding the onset (wave V and A), offset (peak O), transition (peak C) and frequency following responses (peak D, E and F) were identified in all participants.

There was a statistically significant difference in C-ABR latencies between control and study group in the waves D, E, F and O, this means that aphasic patients exhibited abnormal neural synchrony affecting the source elements (fundamental frequency) (waves D, E, F and O) however there was no effect on the filter elements (transients).

Conclusion : Aphasic patients exhibited abnormal neural synchrony affecting the source elements (waves D, E, F and O) however there was no effect on the filter elements (transients).