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).