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A cortico-cerebello-thalamo-cortical loop model under essential tremor (Zhang & Santaniello 2019)
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We investigated the origins of oscillations under essential tremor (ET) by building a computational model of the cortico-cerebello-thalamo-cortical loop. It showed that an alteration of amplitudes and decay times of the GABAergic currents to the dentate nucleus can facilitate sustained oscillatory activity at tremor frequency throughout the network as well as a robust bursting activity in the thalamus, which is consistent with observations of thalamic tremor cells in ET patients. Tremor-related oscillations initiated in small neural populations and spread to a larger network as the synaptic dysfunction increased, while thalamic high-frequency stimulation suppressed tremor-related activity in thalamus but increased the oscillation frequency in the olivocerebellar loop.
Zhang X, Santaniello S (2019) Role of cerebellar GABAergic dysfunctions in the origins of essential tremor
Proceedings of the National Academy of Sciences
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Cerebellum Purkinje GABA cell;
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