Fig. 3From: Quantified assessment of deep brain stimulation on Parkinson’s patients with task fNIRS measurements and functional connectivity analysis: a pilot studyThe experimental procedure. Left: each DBS patient performed n test sessions, n is the number of frequency adjustment. Each session contains frequency adjustment and walking test. The walking test involves 30 s of quiet standing at the beginning and end, intermediated with 30 s of consecutive walking. Instructions about the walking test ("Standing for 30 s," "Walking," "Stop," and "Finish") were given by the doctor. Right: the patients wore a portable fNIRS measurement equipmentBack to article page