Brainstem auditory-evoked potentials in two meditative mental states http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2997230/?tool=pubmed Journal List > Int J Yoga > v.3(2); Jul–Dec 2010 Int J Yoga. 2010 Jul–Dec; 3(2): 37–41. PMCID: PMC2997230 doi: 10.4103/0973-6131.72628. Copyright © International Journal of Yoga Brainstem auditory-evoked potentials in two meditative mental states SanjayKumar, HR Nagendra, KV Naveen, NK Manjunath, and ShirleyTelles Department of Yoga Research, Indian Council of Medical Research Center for Advanced Research in Yoga and Neurophysiology, SVYASA, Bangalore, India Address for correspondence: Dr. Shirley Telles, Patanjali Yogpeeth, Maharishi Dayanand Gram, Bahadrabad, Haridwar - 249 402, Uttarakhand, India. E-mail:
[email protected] This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Context: Practicing mental repetition of “OM” has been shown to cause significant changes in the middle latency auditory-evoked potentials, which suggests that it facilitates the neural activity at the mesencephalic or diencephalic levels. Aims: The aim of the study was to study the brainstem auditory-evoked potentials (BAEP) in two meditation states based on consciousness, viz. dharana , and dhyana . Materials and Methods: Thirty subjects were selected, with ages ranging from 20 to 55 years (M=29.1; ±SD=6.5 years) who had a minimum of 6 months experience in meditating “OM”. Each subject was assessed in four sessions, i.e. two meditation and two control sessions. The two control sessions were: (i) ekagrata , i.e.