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The Influence of Twin Hearts Meditation on Mood, Cognitive Function, and Brain Activity: A Comparative Study of Experienced and Inexperienced Meditators

STS Instructor Authored by Jeffrey Tarrant

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Check out this Knowledge Base article from StressTherapy Solutions: The Influence of Twin Hearts Meditation on Mood, Cognitive Function, and Brain Activity: A Comparative Study of Experienced and Inexperienced Meditators.

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Study at a glance

Area
Anxiety & Stress
Study type
Pilot / open study
Authors
Tarrant J, Viczko J, Mendoza G
Journal
Mindfulness
Year
2026
Participants
36 (18 experienced, 18 novice)
Population
Adults
Protocol
Twin Hearts guided meditation
Sessions
1 guided meditation session

Key findings

  • At baseline, experienced meditators reported more psychological flexibility, absorption and positive mood
  • Mood improved significantly after one session in both groups
  • Both groups got faster on Trails B but not Trails A; Flanker results were mixed
  • No significant EEG changes; exploratory link between frontal beta asymmetry and mood disturbance

DOI 10.1007/s12671-026-02942-3 →

Thirty-six people, half long-term practitioners of this guided loving-kindness style meditation and half newcomers, completed mood questionnaires, cognitive tests and EEG before and after a single guided session. Both groups felt better afterwards, with less tension, fatigue and confusion and more calm and happiness. Effects on thinking were small, and the EEG measures (P300, resting alpha and beta, peak alpha) showed no reliable changes.