Fig. 4From: Performance of blink reflex in patients during anesthesia induction with propofol and remifentanil: prediction probabilities and multinomial logistic analysisElectrode placement for blink reflex monitoring. Electrodes (a) (cathode) and (b) (anode) are electrodes used for electrical stimulation. Electrodes (c) (active) and (d) (reference) are silver disc recording electrodes. Electrode (e) is a ground electrodeBack to article page