frozen sections of the cerebellum and brain stem were impregnated according to the nauta-gygax modified method ( nauta 1957 , fink-heimer 1967 , loewy 1969 ) and the course and termination of the nerve fibres into the inferior colliculus of the mesencephalic tectum has been studied .
C0025462
mesencephalic
C0039433
tectum