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Psychophysiological investigations on transcendental meditation.

A E Puente

Biofeedback and self-regulation September 1981 DOI: 10.1007/bf01000658 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Randomized controlled trial (Experiment I); observational cohort (Experiment II) Peer reviewed
Sample size 77
Population Community volunteers (Experiment I) and experienced meditators (Experiment II)
Interventions Transcendental meditation Benson's relaxation response
Duration Approximately 1 week after instruction (Experiment I); not specified for Experiment II
Measures Respiration rate, heart rate, electromyogram, electroencephalogram, skin conductance level
Topics Meditation
Key findings Neither transcendental meditation, Benson's relaxation response, nor no treatment showed clear superiority in reducing tonic physiological arousal. In experienced meditators, those with 1.5 years of practice had arousal levels similar to those with over 5 years, suggesting a plateau.

Abstract

Two experiments were conducted to evaluate the psychophysiological changes reported to occur during the practice of transcendental meditation. In Experiment I, 47 volunteers solicited from the community were randomly assigned to transcendental meditation (TM), Benson's relaxation response (BRR), or no treatment (NT) instruction. Respiration rate, heart rate, electromyogram, electroencephalogram, and skin conductance level were recorded during the practice of each technique, approximately 1 week after terminating instruction. The results indicate that while BRR, TM, and NT exhibited different physiological patterns, none of the techniques showed a clear superiority in reducing tonic physiological arousal. In Experiment II, 30 volunteers with previous experience were assigned to one of the three groups based on their meditating experience (range 16-96 months). The same physiological signals as in Experiment I were also recorded in this experiment during TM practice. The results suggest that individuals with 1.5 years of meditation experience exhibited physiological arousal levels similar to those seen in persons with over 5 years' experience.

Comparable studies

Other randomized controlled trials on meditation, most cited first.

Study Year Design Participants
Alterations in Brain and Immune Function Produced by Mindfulness Meditation Healthy employees in a work environment 2003 Randomized controlled trial n = 41
Prevention of relapse/recurrence in major depression by mindfulness-based cognitive therapy. Recovered recurrently depressed patients 2000 Randomized controlled trial n = 145
Open hearts build lives: Positive emotions, induced through loving-kindness meditation, build consequential personal resources. Working adults 2008 Randomized controlled trial n = 139
Short-term meditation training improves attention and self-regulation Undergraduate Chinese students 2007 Randomized controlled trial n = 40
Mindfulness-Based Cognitive Therapy for Depression: Replication and Exploration of Differential Relapse Prevention Effects. Recovered recurrently depressed patients 2004 Randomized controlled trial n = 73

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