Science and Prayer - How Prayer Affects the Nervous System

”What do you think of the Polyvagal Theory and the murmuring of prayer in synagogue every morning?”

The Polyvagal Theory, developed by researcher Dr. Stephen Porges, explores the autonomic nervous system, focusing on the vagus nerve and its role in regulating feelings of safety, communication, and calm. When it comes to prayer and murmuring in the synagogue, studies suggest a connection between the biological mechanisms described in the theory and the spiritual experience of prayer.

A Brief Overview of the Polyvagal Theory The theory outlines three main states of the autonomic nervous system:

1. Ventral Vagal State - a state of safety and connection, activated when we feel calm and secure, enabling social interaction and emotional regulation.

2. Sympathetic State - the classic “fight or flight” response, activated in times of stress or perceived danger.

3. Dorsal Vagal State - a shutdown or freeze response, activated in times of helplessness or despair.

The vagus nerve plays a central role in transitioning between these states, directly influencing our emotional regulation and sense of calm.

Prayer Murmuring and the Vagus Nerve Research suggests that murmuring during prayer, chanting of verses, and repeating sacred words may stimulate the vagus nerve, fostering a state of calm and connection. An fMRI study (Kalyani et al., 2011) found that repetitive chanting causes deactivation of the amygdala and limbic system, and a BMJ study (Bernardi et al., 2001) showed that repetitive prayer at 6 breaths per minute improves baroreflex sensitivity. Here’s how:

1. Murmuring as Nervous System Regulation Studies suggest that the gentle movement of the lips and rhythmic breathing during prayer may stimulate the vagus nerve through its laryngeal and auricular branches (Kalyani et al., 2011). The steady breathing and repetition involved in murmuring have been linked to increased parasympathetic activity and a shift toward calm (Inbaraj et al., 2022). This may explain why prayer and mantras are common tools for healing and calming anxiety not only in Judaism but across spiritual traditions.

2. Connecting Body and Soul Whispered or murmured prayer creates a physical and spiritual experience:

• Deep, slow breathing: Helps calm the nervous system.

• Soothing voice: The vibrations from speaking activate the vocal cords and may stimulate the vagus nerve.

• Repetition: Repeated verses (like “Shema Yisrael” or Pesukei DeZimra) act like meditation, creating a sense of order and security.

3. Sense of Belonging and Community In the synagogue, the feeling of being part of something greater - hearing all the voices rising together, even if whispered - creates a sense of belonging and security. According to Polyvagal Theory, safe social environments contribute to emotional regulation and reduce stress levels.

Spiritual and Scientific Perspectives Jewish tradition has long recognized the power of murmuring and song in prayer:

• “All my bones shall proclaim…” (Psalms 35:10): Engaging the body in prayer connects soul and spirit.

• Power of repetition: Repeating verses leads to spiritual elevation and emotional mastery.

• Ear and voice: The Sages learned from Hannah’s prayer (Berakhot 31a) that quiet prayer is the proper way, and that it is heard in heaven. Scientifically, studies suggest that soft vocalizations create vibrations that may stimulate the vagus nerve and aid in emotional regulation.

Summary: Murmuring, Prayer, and the Vagus Nerve Murmuring during prayer, as done in the synagogue, blends physical and spiritual effects:

• Research suggests it stimulates the vagus nerve, supporting emotional regulation and creating calm and security.

• It fosters a sense of unity and belonging within the community.

• It serves as a bridge between body and soul, and between the individual and the Divine.

This fusion of science and spirituality highlights how ancient traditions of prayer remain powerful tools for both emotional and physical healing.