Globus pallidus internus activity during simultaneous bilateral microelectrode recordings in status dystonicus.

Levi, Vincenzo; Franzini, A; Rinaldo, S; Coelli, S; Bianchi, A M; Franzini, A; Nardocci, N; Eleopra, R et al. · Acta Neurochir (Wien) · 2021

case_report · Level V

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Abstract

Limited data are available regarding the electrophysiology of status dystonicus (SD). We report simultaneous microelectrode recordings (MERs) from the globus pallidus internus (GPi) of a patient with SD who was treated with bilateral deep brain stimulation (DBS). Mean neuronal discharge rate was of 30.1 ± 10.9 Hz and 38.5 Hz ± 11.1 Hz for the right and left GPi, respectively. On the right side, neuronal electrical activity was completely abolished at the target point, whereas the mean burst index values showed a predominance of bursting and irregular activity along trajectories on both sides. Our data are in line with previous findings of pallidal irregular hypoactivity as a potential electrophysiological marker of dystonia and thus SD, but further electrophysiological studies are needed to confirm our results.

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