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[Brain stem auditory evoked potentials in the normal and autistic child].
Revue D'Electroencephalographie Et De Neurophysiologie Clinique
|June 1, 1984
Summary
This study found that autistic children exhibit altered brainstem auditory evoked responses (BAERs), indicating abnormal sensory processing. These neurophysiological differences suggest a brainstem defect in how autistic individuals modulate sensory input.
Area of Science:
- Neurophysiology
- Developmental Neuroscience
- Auditory Neuroscience
Context:
- Early infantile autism is hypothesized to stem from brainstem sensory processing abnormalities.
- Brainstem Auditory Evoked Responses (BAERs) are suitable for investigating these potential failures.
Purpose:
- To investigate brainstem auditory evoked responses (BAERs) in autistic children.
- To compare BAERs between autistic children and age/sex-matched normal controls.
Summary:
- BAERs were recorded in 17 autistic children (ages 3-9) and controls using click stimuli at 70 and 90 dB.
- Autistic children showed shorter latencies for peaks II-V and decreased I-II and II-III interpeak transmission times compared to controls.
- A greater V-VN amplitude was observed in autistic children, suggesting a defect in brainstem intensity modulation processing.
Impact:
- Findings suggest a specific brainstem processing deficit in the autistic syndrome related to sensory input modulation.
- This research contributes to understanding the neurophysiological underpinnings of autism.
- Highlights the utility of BAERs in characterizing neurodevelopmental disorders.