Abstract:
:Forty-seven rats were cannulated permanently in either the globus pallidus or neostriatum and subsequently injected with carbachol, scopolamine, or carbachol plus scopolamine. The injection of carbachol (1 mug) into the globus pallidus produced transient hyperkinetic phasic dyskinesias (84%) followed in some cases by ipsilateral circling (47%) associated with hypertonic contralateral hind limbs. This condition progressed in some rats to a cataleptic state (42%). The injection of scopolamine (50 mug) or scopolamine (50mug) plus carbachol (1 mug) into the pallidum produced ipsilateral circling associated with hypotonia of the contralateral hind limb in a few rats. No hyperkinetic dyskinesias nor catalepsy were produced by these injections. The injection of carbachol (1 mug) into the neostriatum produced hyperkinetic dyskinesias (86%) of long duration, minimal circling (both directions) (10%), and catalepsy (29%). These effects were blocked by the addition of 50 mug of scopolamine to the carbachol injection. Scopolamine (50-100 mug) alone produced no effects after injection into the caudate/putamen. Saline injections in the neostriatum or globus pallidus produced no motor disturbance.
journal_name
J Neurosci Resjournal_title
Journal of neuroscience researchauthors
Springer P,Dill REdoi
10.1002/jnr.490010206keywords:
subject
Has Abstractpub_date
1975-01-01 00:00:00pages
143-9issue
2eissn
0360-4012issn
1097-4547journal_volume
1pub_type
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