Yi-Mei Wang, Chia-Wei Liu, Shun-Ying Chen, Liang-Yin Lu, Wen-Chuan Liu, Jia-Huei Wang, Chun-Lun Ni, Shi-Bing Wong, Ami Kumar, Jye-Chang Lee, Sheng-Han Kuo, Shun-Chi Wu, Ming-Kai Pan
Essential tremor (ET) is the most prevalent movement disorder, characterized primarily by action tremor, an involuntary rhythmic movement with a specific frequency. However, the neuronal mechanism underlying the coding of tremor frequency remains unexplored. Here, we used in vivo electrophysiology, optogenetics, and simultaneous motion tracking in the Grid2 dupE3 mouse model to investigate whether and how neuronal activity in the olivocerebellum determines the frequency of essential tremor. We report that tremor frequency was encoded by the temporal coherence of population neuronal firing within the olivocerebellums of these mice, leading to frequency-dependent cerebellar oscillations and tremors...
May 15, 2024: Science Translational Medicine