Fig. 2

Placement of Recording Electrodes to Measure the Stretch Reflex Response. Two electrodes were placed longitudinally to measure contractions of the rectus femoris using the BioRadio (CH1). The other electrodes were connected to channel 2 (CH2) of the BioRadio and were place on the patella and patellar tendon. These electrodes were placed for detection of the tendon-tap that elicited the muscle contraction