Abstract: Neural projections to the cerebellum of the bat，Myotis lucifugus and Eptesicus fuscus，were studied by iontophoretie injection of horseradish peroxidase (HRP)into the cerebellar vermis alld hemispheres．HRP was injected into the recording sites of cerebellar neurons responding to acoustic stimuli．The rosults showed that the cerebellum primarily received its auditory projections via the pontine nucleus．The cerebellum a1so received direct projections from the cochlear nucleus and superior olivary complex. HRP labelled neurons were also found in the inferior olivary nucleus and vestibular nucleus．

Key words: Cerebellum, Auditory input, Echolocation, HRP, Bat

摘要： 将辣根过氧化物酶(Horseradish peroxidase；HRP)分别电泳入大灰褐蝙蝠(Eptesfeus luscus)和小灰褐蝙蝠(Myotis lucifugus)的小脑半球和蚓部对超声刺激有反应的记录点，以研究传递声信息到小脑去的有关神经结构。结果表明：小脑接受的主要声信息传入途径，是经过脑桥中转的，小脑也接受直接来自蜗核和上橄榄复合体的传入投射。此外，在下橄榄核和前庭核也发现标记细胞。

关键词: 小脑, 听传入, 回声定位, 辣根过氧化物酶, 蝙蝠