Abstract:
:Much recent discussion about the origin of Parkinsonian symptoms has centered around the idea that they arise with the increase of beta frequency waves in the EEG. This activity may be closely related to an oscillation between subthalamic nucleus (STN) and globus pallidus. Since STN is the target of deep brain stimulation, it had been assumed that its action is on the nucleus itself. By means of simultaneous recordings of the firing activities from populations of neurons and the local field potentials in the motor cortex of freely moving Parkinsonian rats, this study casts doubt on this assumption. Instead, we found evidence that the corrective action is upon the cortex, where stochastic antidromic spikes originating from the STN directly modify the firing probability of the corticofugal projection neurons, destroy the dominance of beta rhythm, and thus restore motor control to the subjects, be they patients or rodents.
journal_name
Neuronjournal_title
Neuronauthors
Li Q,Ke Y,Chan DC,Qian ZM,Yung KK,Ko H,Arbuthnott GW,Yung WHdoi
10.1016/j.neuron.2012.09.032subject
Has Abstractpub_date
2012-12-06 00:00:00pages
1030-41issue
5eissn
0896-6273issn
1097-4199pii
S0896-6273(12)00886-0journal_volume
76pub_type
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