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  • Title: The effects of the transcendental mediation technique and progressive muscle relaxation on EEG coherence, stress reactivity, and mental health in black adults.
    Author: Gaylord C, Orme-Johnson D, Travis F.
    Journal: Int J Neurosci; 1989 May; 46(1-2):77-86. PubMed ID: 2670798.
    Abstract:
    Eighty-three black college students, staff and adults were pretested on EEG coherence, skin potential (SP) habituation to a series of loud tones, psychometric measures of mental health (Tennessee Self-Concept Empirical Scales and Spielberger State-Trait Anxiety Inventory) and IQ. They were then randomly assigned to one of the three treatment groups: the Transcendental Meditation technique (TM); Progressive Muscle Relaxation (PR); or cognitive-behavioral strategies (C). Approximately one year later, they were posttested. TM and PR increased significantly on an overall mental health factor (p less than .036) and anxiety (p less than .0006). TM showed a greater reduction in neuroticism than PR and C (p less than .032). TM also showed global increases in alpha and theta coherence among frontal and central leads during the TM period compared to eyes closed (p less than .016), whereas PR and C did not show EEG state changes. The coherence increases during TM were most marked in the right hemisphere (F4C4). TM showed faster SP habituation at posttest compared to pretest (p less than .047) whereas PR did not (data was missing for C). None of the groups showed longitudinal changes in EEG, perhaps due to lack of regularity of participation in the treatment programs.
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