The electrodes can be placed on the back. However placing the electrodes on the back will affect the signal amplitude and may result in unwanted movement artifact being added from the back muscles (Infraspinatus fascia, Latissimus dorsi, etc...).
The electrodes can be placed on the back. However placing the electrodes on the back will affect the signal amplitude and may result in unwanted movement artifact being added from the back muscles (Infraspinatus fascia, Latissimus dorsi, etc...).