Potassium-ion activity in the trigeminal central nervous complex during tooth pulp-evoked slow mass potentials.
Following electrical stimulation of the tooth pulp, extracellular K+ activity was enhanced by up to 0.1 mM only in the trigeminal motor nucleus which gave a positive slow mass potential (SMP) of low amplitude. No nuclear region giving a positive or negative SMP of high amplitude showed any detectable change. There are possible generation mechanisms of the negative and positive SMP.
Satoh
T
T
Department of Physiology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
Yamada
S
S
Ohshima
T
T
Yokota
T
T
Kitayama
S
S
D000818:Animals; D002415:Cats; D003782:Dental Pulp / Q000502:physiology*; D004558:Electric Stimulation; D005071:Evoked Potentials; D011188:Potassium / Q000378:metabolism*; D014276:Trigeminal Nerve / Q000378:metabolism*
D011188:Potassium