A comparison of electromyography recorded parallel and transverse to the fibres of the anterior and posterior temporalis muscle in man.

Electrical activity recorded during voluntary clenching by platinum hook intra-cutaneous electrodes was significantly higher (p less than 0.01) when the electrodes were placed parallel to the muscle fibres than across the fibres. The correlation between the parallel and transverse EMG recordings was highly significant (p less than 0.001).