Fig. 4From: Quantified assessment of deep brain stimulation on Parkinson’s patients with task fNIRS measurements and functional connectivity analysis: a pilot studyThe brain functional connectivity matrices calculated from the fNIRS measurements of the five PD patients (P1, P2, P3, P4, P5) at different DBS frequencies. The color bar corresponding to the values of CM was presented at the bottom. The frequency values in red are promisingly optimal for each patientBack to article page