McPartland J M, Mein E A
Vermont Alternative Medicine, Middlebury, USA.
Altern Ther Health Med. 1997 Jan;3(1):40-5.
Entrainment is the integration or harmonization of oscillators. All organisms pulsate with myriad electrical and mechanical rhythms. Many of these rhythms emanate from synchronized pulsating cells (eg, pacemaker cells, cortical neurons). The cranial rhythmic impulse is an oscillation recognized by many bodywork practitioners, but the functional origin of this impulse remains uncertain. We propose that the cranial rhythmic impulse is the palpable perception of entrainment, a harmonic frequency that incorporates the rhythms of multiple biological oscillators. It is derived primarily from signals between the sympathetic and parasympathetic nervous systems. Entrainment also arises between organisms. The harmonizing of coupled oscillators into a single, dominant frequency is called frequency-selective entrainment. We propose that this phenomenon is the modus operandi of practitioners who use the cranial rhythmic impulse in craniosacral treatment. Dominant entrainment is enhanced by "centering," a technique practiced by many healers, for example, practitioners of Chinese, Tibetan, and Ayurvedic medicine. We explore the connections between centering, the cranial rhythmic impulse, and craniosacral treatment.
同步化是振荡器的整合或协调。所有生物体都伴随着无数的电和机械节律而脉动。这些节律中的许多都源于同步脉动的细胞（例如，起搏细胞、皮层神经元）。颅骨节律性冲动是许多身体疗法从业者所认可的一种振荡，但这种冲动的功能起源仍不确定。我们提出，颅骨节律性冲动是同步化的可感知表现，是一种融合了多个生物振荡器节律的谐波频率。它主要源自交感神经系统和副交感神经系统之间的信号。同步化也会在生物体之间出现。将耦合振荡器协调成单一的主导频率被称为频率选择性同步化。我们提出，这种现象是在颅骶治疗中运用颅骨节律性冲动的从业者的操作方式。许多治疗师所采用的“定心”技术（例如，中医、藏医和阿育吠陀医学从业者）会增强主导同步化。我们探讨了定心、颅骨节律性冲动和颅骶治疗之间的联系。
