Abstract
The changes of Brain Stem Response (BSR) recorded from the vertex of the anesthetized cat were studied after the eighth nerve was sectioned and the cochlear nuclei were destructed.
The results and conclusions were as follows:
1. The typical wave form of BSR in cat consisted of the five waves.
2. After the section of the eighth nerve and the destruction of the cochlear nuclei the second to fifth waves were disappeared, but the first wave was not affected.
3. BSR was not recorded after the destruction of the inner ear.
4. The first wave of BSR is considered to be originated at the eighth nerve, and the second wave is supposedly generated at the cochlear nuclei.
