Jaw movements evoked by substantia nigra stimulation: role of extranigral current spread.
Electrical stimulation of the substantia nigra in cats elicits jaw movements. A variety of tests were performed to assess the contribution of current spread to this phenomenon. The results of these tests strongly suggest that stimulation-evoked movements are not due to activation of the substantia nigra but rather are the result of current spread to adjacent structures.
D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D005071:Evoked Potentials; D007568:Jaw / Q000294:innervation*; D008409:Mastication; D009068:Movement; D013378:Substantia Nigra / Q000502:physiology*