Lateralization of brainstem lesions by brainstem auditory evoked potentials

Academic Article


  • In eight patients with unilateral pontine and midbrain lesions, brainstem auditory evoked potentials (BAEPs) were studied with ipsilateral (Cz-Ai) and contralateral (Cz-Ac) recordings after monaural stimulation. In all cases, the most prominent abnormality was noted in BAEP generated by stimulating the ear ipsilateral to the lesion. The Cz-Ai and Cz-Ac patterns showed similar abnormalities in five of the patients and dissociated abnormalities in two patients. We conclude that: (1) Lateralization by BAEP is possible in unilateral pontine and midbrain lesions. (2) Monaural stimulation with Cz-Ai and Cz-Ac recordings is essential for lateralization. (3) The BAEP in monaural stimulation is predominantly generated from the auditory structures ipsilateral to the stimulated ear. © 1981 American Academy of Neurology.
  • Authors

    Published In

  • Neurology  Journal
  • Digital Object Identifier (doi)

    Author List

  • Oh SJ; Kuba T; Soyer A; Choi IIS; Bonikowski FP; Vitek J
  • Start Page

  • 14
  • End Page

  • 18
  • Volume

  • 31
  • Issue

  • 1