TABLE 2.

Subjective stimulation qualities

Subject	Dermatome Chosen for Stimulation	Higher-Frequency Description	Effect of Repeat Stimulations & Larger Frequencies on Dermatomal Area
S08	Digit 2 ventral tip	“Faster”	No change
S10	Digit 4 ventral surface	“More intense”	No change
S14	Digit 5 medial surface	“Faster buzzing”	No change

Dermatomes used for stimulation were chosen on the basis of electrode pairs that elicited safe and reliable somatosensation over a consistent dermatomal area following repeat stimulation by the epileptologist. Subjects reported the subjective quality of percepts arising from higher frequencies. Repeat stimulation and stimulation at larger frequencies did not change the dermatomal area in all subjects.