Using The Wireless Emg Sensors; Orienting The Emg Sensors On The Skin - Delsys TRIGNO User Manual

Using the Wireless EMG Sensors

Orienting the EMG Sensors on the Skin

The Trigno EMG Sensor is fitted with 4 silver bar contacts for
detecting the EMG signal at the skin surface. It is crucial that the
orientation of these bars be perpendicular to the muscle fibers
for maximum signal detection. The top of the sensor is shaped
with an arrow to aid in the determination of this orientation. The
arrow should be placed parallel to the muscle fibers underneath
the sensor. The sensor should also be placed in the center of the
muscle belly away from tendons and the edge of the muscle. The
sensor is easily attached to the skin using the Delsys Adhesive
Sensor Interface.
Figure 5. EMG Sensor orientation with respect to the muscle fibers. It
is important that the orientation of the arrow on the sensor be parallel
to the underlying muscle fibers.
14
Muscle Fiber Direction
TM
Trigno Wireless EMG System User's Guide