The surface emg electrodes were placed on the temporalis and maxium
outputs was recorded
over the preceding 30 minutes. The graph below shows how the clenching intenstiy increases as
the headache patients are sleeping. The habitual nightly intense contractions make the temporalis
"over contract" during regular function (the spiking during lunch time recordings).
A possible goal of treatment and prevention of TMD's and tension-type
be to specifically reduce the intensity of temporalis activity.