Comparative studies on Middle Latency Response (MLR) and Evoked Potentials (EP) from Auditory Cortices (AI) in Cats under Penthobarbital anesthesia
1991 Volume 34 Issue 1 Pages 47-52
Details
1991 Volume 34 Issue 1 Pages 47-52
MLR and EP from both right and left AI were recorded simultaneously from eleven cats, both awake and after Pentobarbital injection. The profile of Changes in MLR and EP were investigated in three of them.
As a result, the latency of P1 of EP from AI, which appears as a positive peak after Auditory Brainstem Response (ABR), was significantly greater till 165 minutes after Pentobarbital injection. Its amplitude was smallest 30 minutes after the injection, then started to increase till it reached maximum between 135 and 165 minutes after the injection.
The latency of NA, which appeares as a first negative peak after ABR in MLR, was significantly greater till 165 minutes after Pentobarbital injection, and its amplitude Changed in proportion to that of P1. The amplitude of NA and P1 were correlated significantly.
The data suggest that NA of MLR is correlated with the auditory cortex.
