Neurophysiological Effects of Meditation Based on Evoked and Event Related Potential Recordings

Table 1

Neural generators of evoked potential components.

S. number		Name of the components	Latencies (msec)	Neural generators
1	Short latency auditory evoked potential	Wave I	1.9	Auditory portion of the eighth cranial nerve
		Wave II	3.6	Near or at the cochlear nucleus. A portion from the eighth nerve fibers around the cochlear nucleus
		Wave III	4.2	The lower pons through the superior olive and trapezoid body
		Wave IV	5.2	The upper pons or lower midbrain, in the lateral lemniscus and the inferior colliculus; a contralateral brainstem generator for wave V is suggested
		Wave V	5.8
		Na	14–19	Medial geniculate body
		Pa	25–32	Superior temporal gyrus
2	Mid latency auditory evoked potential	Nb	35–65	Dorso-posterior-medial part of Heschl’s gyrus that is the primary auditory cortex
		N1	40–60 ms	Secondary auditory cortex in the lateral Heschl’s gyrus
		P1	80–115 ms	Bilateral parts of the auditory superior cortex
	Long latency auditory evoked potential	N2	140–180 ms	Mesencephalic-reticular activating system (RAS)
		P2	220–280 ms	Anterior cingulate cortex