Spatio-temporal structure of single neuron subthalamic activity identifies DBS target for anesthetized Tourette syndrome patients

Journal of Neural Engineering
M. VissaniAlberto Mazzoni

Abstract

Deep brain stimulation (DBS) of basal ganglia effectively tackles motor symptoms of movement disorders such as Tourette syndrome (TS). The precise location of target stimulation site determines the range of clinical outcome in DBS patients, and the occurrence of side-effects of DBS. DBS implant procedures currently localize stimulation target relying on a combination of pre-surgical imaging, standardized brain atlases and on-the-spot clinical tests. Here we show that temporal structure of single unit activity in subthalamic nucleus (STN) of patients affected by pure TS can contribute to identify the optimal target location of DBS. Neural activity was recorded at different depths within STN with microelectrodes during DBS implant surgery. Depth specific neural features were extracted and correlated with the optimal depth for tic control. We describe for the first time temporal spike patterns of single neurons from sensorimotor STN of anesthetized TS patients. A large fraction of units (31.2%) displayed intense bursting in the delta band (<4 Hz). The highest firing irregularity and hence the higher density of bursting units (42%) were found at the optimal spot for tic control. Discharge patterns irregularity and dominant oscillat...Continue Reading

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Citations

Jan 17, 2021·Movement Disorders : Official Journal of the Movement Disorder Society·Federico MicheliAlberto Mazzoni
Feb 5, 2021·Biological Psychiatry : Cognitive Neuroscience and Neuroimaging·Kara A JohnsonChristopher R Butson
Jan 29, 2021·F1000Research·Andreas HartmannKevin J Black
Oct 15, 2020·Journal of Neural Engineering·Matteo VissaniAlberto Mazzoni
Oct 5, 2021·European Child & Adolescent Psychiatry·Natalia SzejkoKirsten Müller-Vahl

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