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Neurosurgical Review

, Volume 12, Supplement 1, pp 313–316 | Cite as

Recovery of auditory evoked potentials after long-term complete brain ischemia

  • Hirsch H. 
  • V. Hohmann
  • M. Kaegler
  • B. Sickel
Evoked potentials

Summary

Complete cerebral ischemia lasting 20 and 30 min was produced in dog brains. Before and after complete ischemia early and middle latency auditory evoked potentials were recorded simultaneously. In all cases of complete ischemia for 30 min amplitudes of evoked potentials were diminished during the reperfusion period of 8 to 12 hours. In some cases evoked potentials reappeared only temporarily. After complete ischemia of 20 min duration, the amplitude of evoked potentials varied within a wide range. They could reach nearly normal values.

Key words

Cerebral ischemia Auditory evoked potentials Post-ischemic recovery 

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Copyright information

© Walter de Gruyter & Co. 1989

Authors and Affiliations

  • Hirsch H. 
    • 1
    • 2
  • V. Hohmann
    • 1
  • M. Kaegler
    • 1
  • B. Sickel
    • 1
  1. 1.Institute of Normal and Pathological PhysiologyUniversity of CologneGermany
  2. 2.Institut für normale und pathologischePhysiologie der Universität KölnKöln 41Germany

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