Depressed brainstem auditory function in children with cerebral palsy.
Brainstem auditory evoked responses were studied to examine brainstem auditory function in 80 children with cerebral palsy. The response waveform, particularly later waves, tended to be depressed. Thirty-three (41.3%) showed abnormal results. The main abnormality was reduced wave V amplitude. Other abnormalities were decreased V/I amplitude ratio, missing waves, prolonged I-V interval, and increased interaural difference in I-V interval. The abnormalities were persistent during the follow-up. In contrast to common findings in the responses in progressive neurologies, abnormalities in interpeak intervals were rare in children with cerebral palsy. There were some characteristic changes in the responses in certain etiologies. These results suggest that brainstem auditory function in children with cerebral palsy is depressed, which may be owing to decreased or altered neural firing or synchrony in the auditory brainstem. A detailed analysis of central components of the responses is valuable in detecting central auditory dysfunction in children with cerebral palsy.
Jiang
Ze D
ZD
Children's Hospital, Fudan University, Shanghai, China. zedong.jiang@paediatrics.ox.ac.uk
Wu
Yun Y
YY
Liu
Xian Y
XY
Wilkinson
Andrew R
AR
D000161:Acoustic Stimulation / Q000379:methods; D001933:Brain Stem / Q000503:physiopathology*; D002547:Cerebral Palsy / Q000209:etiology / Q000473:pathology*; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography / Q000379:methods; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D011930:Reaction Time / Q000502:physiology; D015203:Reproducibility of Results