Abstract
ALTHOUGH the overall content of acetylcholine and choline acetylase within the mammalian cerebellum is relatively low1, acetylcholinesterase is associated with the cell bodies and axones of granule cells2. Since the synaptic endings of the parallel fibres (granule cell axones) on the dendrites of Purkinje cells are excitatory in nature, in contrast to the inhibitory endings of the basket cells which are confined to the bodies of Purkinje cells3, it would not be unreasonable to consider that acetylcholine could be an excitant of Purkinje cells. Topically applied acetylcholine, in the presence of physostigmine, does indeed excite elements in the cerebellar cortex4; but hitherto the actual cells involved have not been identified.
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References
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CRAWFORD, J., CURTIS, D., VOORHOEVE, P. et al. Excitation of Cerebellar Neurones by Acetylcholine. Nature 200, 579–580 (1963). https://doi.org/10.1038/200579b0
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DOI: https://doi.org/10.1038/200579b0
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