Figure 5.

Relationships between spectra and PAC. A, Top, Group analysis shows relationship between frequency with maximum PSD drop (LFO) in VIM during contralateral movement execution compared with baseline, and the phase frequency of the highest thalamocortical PAC (VIM LFO to cortical HBA) during baseline. Bottom, Group analysis shows relationship between frequency with maximum/peak thalamocortical coherence (LFO) and the phase frequency of the highest thalamocortical PAC (VIM LFO to cortical HBA), both during baseline. B, The highly limited spread of the difference shows how the frequency that decreases the most in the VIM during movement matches the frequency that couples the most with the broadband high-frequency cortical activity. C, The highly limited spread of the difference shows how the frequency that has the most thalamocortical coherence in the LFO range during baseline matches the frequency that couples the most with the broadband high-frequency cortical activity. D, Thalamocortical PAC during movement normalized to baseline presents a statistically significant decrease (Wilcoxon signed-rank test, p = 0.002 for baseline vs contralateral movement, p = 0.004 for baseline vs ipsilateral). The comparison is made at the phase frequency that couples the most during baseline/rest. *p < 0.01.