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  • Title: Electrophysiological investigation of the auditory system in Friedreich's ataxia.
    Author: Taylor MJ, McMenamin JB, Andermann E, Watters GV.
    Journal: Can J Neurol Sci; 1982 May; 9(2):131-5. PubMed ID: 7104879.
    Abstract:
    Auditory brainstem responses (ABRs) and cortical auditory evoked responses (AERs) were studied in a series of 16 Friedreich's ataxia patients who varied in age, degree of clinical involvement and duration of the disorder. The ABRs were markedly abnormal in all but the youngest patient, and the abnormalities reflected the severity and duration of the disease. The latencies of the AERs were significantly longer in the Friedreich's ataxia patients compared to normal controls, suggesting cortical as well as peripheral involvement of the auditory system. These data are discussed in terms of the neuropathology of the disorder and the similarities with the other sensory systems in Friedreich's ataxia patients.
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