Цахим шуудангийн бүртгэл: ROLE OF CEREBRAL ASSOCIATION AREA IN THE INHIBITION OF ELECTRO-ACUPUNCTURE ON RESPONE OF SOMATOSENSORY CORTEX TO SLOW PAINROLE OF CEREBRAL ASSOCIATION AREA IN THE INHIBITION OF ELECTRO-ACUPUNCTURE ON RESPONE OF SOMATOSENSORY CORTEX TO SLOW PAIN