Acoustic reflex abnormalities in cranial-cervical dystonia.
case_series · Level IV
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- Record sourced from PubMed, PMID 1549220.
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Abstract
Previous anatomic and physiologic studies suggest brainstem dysfunction in cranial-cervical dystonia. To further explore this, we studied suprathreshold acoustic reflex waveforms in 15 such patients. A unique feature of this technique is its ability to reject movement artifacts before averaging the acoustic reflex waveforms. Thirteen patients (87%) showed some abnormality in reflex waveform morphology. There were both amplitude and latency abnormalities. These findings support the hypothesis that cranial-cervical dystonia reflects dysfunction of the brainstem.
Medical subject headings
- Auditory Perception
- Brain Stem
- Dystonia
- Reflex