Telles S., Naveen K. V. Psychological Reports: (April 2004) Volume 94, Issue 2, Pp. 398-400

1. Changes in Middle Latency Auditory Evoked Potentials During
Meditation.
Telles S., Naveen K. V.
Psychological Reports: (2004) Volume 94, Issue 2, Pp. 398-400
Summary
In the present study of middle latency auditory evoked potentials
during Brahmakumaris Raja Yoga meditation there was a decrease in
the peak latency of the Na wave (a negative wave between 14 and 19
msec.) during meditation. Since the neural generator of this wave lies
at the midbrain-thalamic level, from the results one can infer that the
meditation reduces conduction time at this level.
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http://www.amsciepub.com/doi/abs/10.2466/pr0.94.2.398-400