Peter Gamma (Physiologist & Director) Meditation Research Institute Switzerland (MRIS)

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So which device should experienced meditators buy?

Peter Gamma, Director of the Meditation Research Institute Switzerland (MRIS) and Editor in Chief of the «The Journal of Meditation Research (JMR)» suggests to buy

The iWorx TA teaching system:

Together with th iWorx ECG toolbox:

But experienced readers of the “Journal of Meditation Research (JMR)” know how to build such a device by themselves and know how to use it with an ECG toolbox in Python.