Fig. 2
From: Biceps femoris late latency responses and the “notching sign” in spasticity
Ashworth Grade 3 spastisicity in a hemiplegic case / R, Affected side. The top trace was recorded from an Ashworth 3 spastic patient, using a goniometer. The “notching” sign shown in the trace is not observed in normal subjects. In the second trace, the late responses in the rectus femoris and biceps femoris muscles following the patellar T reflex are observed. In the third trace, the temporal relationship between the “notch” sign and the medium and late latency reflex responses is noted. The pendulum ends with a five beat (Pc) oscillation. EMG recordings have been rectified. The bottom trace indicates that the patellar T reflex has been triggered. The scale is shown on the left vertical line. The upper trace is the angle in degrees, while the middle and lower traces are shown in mV amplitude. The sweep speed is shown on the bottom right