Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2017
Single-unit activity of the anterior Globus pallidus internus in Tourette patients and posterior Globus pallidus internus in dystonic patients.
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Giorni Andrea, Windels François, Stratton Peter G, Cook Raymond, Silberstein Paul, Coyne Terrence, Silburn Peter A, Sah Pankaj
Аннотация
OBJECTIVES: Our goal was to provide a detailed analysis of neurons' electrophysiological activity recorded in sub-territories of Globus pallidus internus (GPi) used as Deep Brain Stimulation (DBS) targets for these clinical conditions to potentially assist electrode targeting.
METHODS: We used intra-operative microelectrode recording during stereotactic neurosurgery to guide implantation of DBS lead.
RESULTS: Units in the medial anterior part of GPi of 7 Tourette's syndrome patients under general anesthesia were firing at mean and median rate of 32.1 and 21 Hz respectively (n = 101), with 45% of spikes fired during bursts and 21.3 bursts per minute. In the latero-posterior part of GPi of 7 dystonic patients under local anesthesia the mean and median activity were 46.1 and 30.6 Hz respectively (n = 27), and a mean of 21.7 bursts per minute was observed, with 30% of all spikes occurring during these bursts.
CONCLUSION: Units activity pattern - slow-regular, fast-irregular or fast-regular were present in different proportions between the two targets.
SIGNIFICANCE: The electrophysiological characteristics of the medial-anterior part of GPi and its latero-posterior portion can be used to assist DBS electrode targeting and also support the refinement of pathophysiological models of Tourette's syndrome and Dystonia.
METHODS: We used intra-operative microelectrode recording during stereotactic neurosurgery to guide implantation of DBS lead.
RESULTS: Units in the medial anterior part of GPi of 7 Tourette's syndrome patients under general anesthesia were firing at mean and median rate of 32.1 and 21 Hz respectively (n = 101), with 45% of spikes fired during bursts and 21.3 bursts per minute. In the latero-posterior part of GPi of 7 dystonic patients under local anesthesia the mean and median activity were 46.1 and 30.6 Hz respectively (n = 27), and a mean of 21.7 bursts per minute was observed, with 30% of all spikes occurring during these bursts.
CONCLUSION: Units activity pattern - slow-regular, fast-irregular or fast-regular were present in different proportions between the two targets.
SIGNIFICANCE: The electrophysiological characteristics of the medial-anterior part of GPi and its latero-posterior portion can be used to assist DBS electrode targeting and also support the refinement of pathophysiological models of Tourette's syndrome and Dystonia.