ABSTRACT For years the primary evidence of the third rhythm of the cranium was observation by palpation. In 2021 Dr. Thomas Rosenkilde Rasmussen and Dr. Karl Christian Meulengracht published their results of direct observation of the third rhythm using robotics and software analysis in their peer-reviewed publication, “Direct measurement of the rhythmic motions of the human head identifies a third rhythm” in the Journal of Bodywork and Movement Therapies. In this interview, Rasmussen discusses his background as medical researcher and craniosacral practitioner that led to building this measurement machine, doing this experiment, and the various questions his laboratory group are considering for the future.

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