Elderly persons who practice the TM technique showed a faster response in the brain to visual stimuli (shorter latency of P300 response) in comparison to a control group of the same age. This type of brain response normally slows down with age, and this finding therefore shows a reversal of the aging process that occurs through the regular practice of the TM programme.Ref.Psychophysiology 26: S29 (Abstract), 1989

Among 147 long-term TM and TM Sidhi practitioners (meditating 9 years on average), a significant correlation was found between the length of TM practice and higher scores on: visual memory, non-verbal intelligence, creativity, field independence, response speed, sensory speed, and motor speed. The longer that TM and the TM Sidhi techniques were practiced, the higher the score, which indicates that Transcendental Meditation has a positive influence on all these factors.Ref.Scientific Research on Maharishi’s Transcendental Meditation, Collected Papers Vol 3, 257, pp 1954-1966