A method includes evoking and recording the response of a trigeminal reflex in the presence and absence of occipital nerve stimulation (ONS) to determine whether, and to what extent, ONS modulates the trigeminal reflex. If the ONS modulates the trigeminal reflex, e.g. to a sufficient degree, the subject may be considered a candidate for ONS for treatment of headache.
Modulation of trigeminal reflex strength