Chanting

Promote Relaxation in Experienced Yoga Practitioners with OM Chanting

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Promote Relaxation in Experienced Yoga Practitioners with OM Chanting

 

By John M. de Castro, Ph.D.

 

“Om is a great tool for manifesting positive things in your life. Chanting Om calms your mind and helps you bring in positive energy into your body.” – Times of India

Contemplative practices have been shown to improve health and well-being. One ancient practice that is again receiving acceptance and use is chanting. It is a very common component of many contemplative practices. Chanting is claimed to be helpful in contemplative practice and to help improve physical and mental well-being. OM chanting has been practiced for centuries. But there is very little empirical research on OM chanting or its effectiveness.

 

In today’s Research News article “Immediate Effects of OM Chanting on Heart Rate Variability Measures Compared Between Experienced and Inexperienced Yoga Practitioners.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9015091/ ) Inbaraj and colleagues recruited healthy adult yoga practitioners and yoga naïve individuals and had them perform a loud OM chant for 5 minutes. They were assessed before and after the chanting with an electrocardiogram for assessment of heart rate variability.

 

They found that at baseline the yoga practitioners had significantly higher levels of high frequency heart rate variability than the yoga naïve group. Compared to baseline and the yoga naïve group after chanting the experienced yoga practitioners had a significant increase in high frequency heart rate variability. The greater the number of years of experience practicing yoga the greater the increase in high frequency heart rate variability.

 

Increases in heart rate variability indicates a reduction in physiological activation, an increase in parasympathetic relaxation, providing a physiological indicator of calm relaxation. So, the results suggest that practicing yoga increases the ability to relax both in general and after chanting.

 

Promote the ability to relax with yoga.

 

“OM is present in everything that we speak. It is the sound of the Universe and everything that it contains. The primordial sound from which everything emerged.” – Meditative Mind

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Twitter @MindfulResearch

 

Study Summary

 

Inbaraj, G., Rao, R. M., Ram, A., Bayari, S. K., Belur, S., Prathyusha, P. V., Sathyaprabha, T. N., & Udupa, K. (2022). Immediate Effects of OM Chanting on Heart Rate Variability Measures Compared Between Experienced and Inexperienced Yoga Practitioners. International journal of yoga, 15(1), 52–58. https://doi.org/10.4103/ijoy.ijoy_141_21

 

Abstract

Background:

Chanting “OM” is a form of meditation that has numerous health benefits. However, the neurophysiological mechanisms underpinning its effect are surprisingly scarce. The present study aimed to investigate the effect of OM chanting on autonomic modulation, using heart rate variability (HRV), on experienced yoga practitioners and yoga naïve persons.

Methods:

This prospective study included 19 yoga practitioners (9 females and 10 males; group mean age ± standard deviation [SD]; 25.9 ± 3.2 years) and 17 yoga naïve persons (8 females and 9 males; group mean age ± SD; 24.8 ± 3.6 years) of both sexes and similar age range. Both the groups were assessed for HRV indices (time and frequency domain measures) before and after loud OM chanting for 5 min.

Results:

Baseline comparison using Mann–Whitney U test between groups showed yoga practitioners had significantly increased high frequency (HF) power (P < 0.029) than nonyoga practitioners, signifying a state of tranquility before the chanting of OM. After 5 min of loud chanting of OM, a comparison between groups assessed using Wilcoxon Signed Ranks test revealed: HF Power, a component of the parasympathetic nervous system, was further amplified with a significantly increase (P < 0.001) in the yoga practitioners group compared to nonyoga practitioners. Furthermore, this increase in HF power was positively correlated with the years of experience in yoga.

Conclusion:

The present study showed that a brief chanting of OM (5 min) might enhance parasympathetic nervous system activity, promote relaxation, and provide calmness. Further, this experience may be achieved effectively in individuals experienced in yoga than nonyoga practitioners.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9015091/

 

Meditation Comes in Seven Different Varieties

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Meditation Comes in Seven Different Varieties

 

By John M. de Castro, Ph.D.

 

“Experienced meditators agree: a daily meditation practice can have significant benefits for mental and physical health. But one thing they probably won’t agree on? The most effective types of meditation. That’s simply because it’s different for everyone. After all, there are literally hundreds of meditation techniques encompassing practices from different traditions, cultures, spiritual disciplines, and religions.” Headspace

 

Meditation training has been shown to improve health and well-being. It has also been found to be effective for a large array of medical and psychiatric conditions, either stand-alone or in combination with more traditional therapies. As a result, meditation training has been called the third wave of therapies. One problem with understanding meditation effects is that there are, a wide variety of meditation techniques and it is not known which work best for improving different conditions.

 

There are a number of different types of meditation. Classically they’ve been characterized on a continuum with the degree and type of attentional focus. In focused attention meditation, the individual practices paying attention to a single meditation object. Transcendental meditation is a silent mantra-based focused meditation in which a word or phrase is repeated over and over again. In open monitoring meditation, the individual opens up awareness to everything that’s being experienced regardless of its origin. In Loving Kindness Meditation the individual systematically pictures different individuals from self, to close friends, to enemies and wishes them happiness, well-being, safety, peace, and ease of well-being.

 

But there are a number of techniques that do not fall into these categories and even within these categories there are a number of large variations. In today’s Research News article “What Is Meditation? Proposing an Empirically Derived Classification System.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803504/), Matko and colleagues attempt to develop a more comprehensive system of classification. They found 309 different techniques but reduced them down to the 20 most popular ones. They recruited 100 meditators with at least 2 years of experience and asked them to rate how similar each technique was to every other technique.

 

They applied multidimensional scaling to the data which uncovered two dimensions that adequately described all of the 20 techniques. The analysis revealed a dimension of the amount of activation involved and a dimension of the amount of body orientation involved. All 20 techniques were classified within these two dimensions. Visual inspection of where the various techniques fell on the two dimensions produces 7 different clusters labelled as “(1) Body-centered meditation, (2) mindful observation, (3) contemplation, (4) mantra meditation, (5) visual concentration, (6) affect-centered meditation, and (7) meditation with movement.”

 

Within the high activation and low body orientation quadrant there was one cluster identified, labelled “Mantra Meditation” including singing sutras/mantras/invocations, repeating syllables and meditation with sounds. Within the low activation and low body orientation quadrant there were three clusters identified, labelled “affect-centered meditation” including cultivating compassion and opening up to blessings; “visual orientations” including visualizations and concentrating on an object; and “contemplation” including contemplating on a question and contradictions or paradoxes.

 

Within the high activation and high body orientation quadrant there was one cluster identified, labelled “meditation with movement” including “meditation with movement, manipulating the breath, and walking and observing senses. Within the low activation and high body orientation quadrant there was one cluster identified, labelled “mindful observation” including observing thoughts, lying meditation, and sitting in silence. Finally, they identified a cluster with high body but straddling the activation dimension, labelled “body centered meditation” including concentrating on a energy centers or channeling, body scan, abdominal breath, nostril breath, and observing the body.

 

This 7-category classification system is interesting and based upon the ratings of experienced meditators. So, there is reason to believe that there is a degree of validity. In addition, the system is able to encompass 20 different popular meditation techniques. It remains for future research to investigate whether this classification system is useful in better understanding the effects of meditation or the underlying brain systems.

 

“Not all meditation styles are right for everyone. These practices require different skills and mindsets. How do you know which practice is right for you? “It’s what feels comfortable and what you feel encouraged to practice,” – Mira Dessy

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Matko, K., & Sedlmeier, P. (2019). What Is Meditation? Proposing an Empirically Derived Classification System. Frontiers in psychology, 10, 2276. doi:10.3389/fpsyg.2019.02276

 

Abstract

Meditation is an umbrella term, which subsumes a huge number of diverse practices. It is still unclear how these practices can be classified in a reasonable way. Earlier proposals have struggled to do justice to the diversity of meditation techniques. To help in solving this issue, we used a novel bottom-up procedure to develop a comprehensive classification system for meditation techniques. In previous studies, we reduced 309 initially identified techniques to the 20 most popular ones. In the present study, 100 experienced meditators were asked to rate the similarity of the selected 20 techniques. Using multidimensional scaling, we found two orthogonal dimensions along which meditation techniques could be classified: activation and amount of body orientation. These dimensions emphasize the role of embodied cognition in meditation. Within these two dimensions, seven main clusters emerged: mindful observation, body-centered meditation, visual concentration, contemplation, affect-centered meditation, mantra meditation, and meditation with movement. We conclude there is no “meditation” as such, but there are rather different groups of techniques that might exert diverse effects. These groups call into question the common division into “focused attention” and “open-monitoring” practices. We propose a new embodied classification system and encourage researchers to evaluate this classification system through comparative studies.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6803504/

 

Affect the Brain with Religious Chanting

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Affect the Brain with Religious Chanting

 

By John M. de Castro, Ph.D.

 

“According to a recent medical report, chanting Om has been associated with reducing stress. One of the biggest health benefits of Om chanting is that it brings down stress levels. It provides relief from anxiety and tension. Regular chanting ensures that you feel peaceful from within and are less distracted while doing any form of work.” – Pavankumar elkoochi

 

Contemplative practices have been shown to improve health and well-being. One ancient practice that is again receiving acceptance and use is chanting. It is a very common component of many contemplative practices. Chanting is claimed to be helpful in contemplative practice and to help improve physical and mental well-being. But there is very little empirical research on chanting or its effectiveness.

 

The nervous system is a dynamic entity, constantly changing and adapting to the environment. It will change size, activity, and connectivity in response to experience. These changes in the brain are called neuroplasticity.  Over the last decade neuroscience has been studying the effects of contemplative practices on the brain and has identified neuroplastic changes in widespread area. and have found that meditation practice appears to mold and change the brain, producing psychological, physical, and spiritual benefits. What changes in the brain that may occur with chanting are not known.

 

In today’s Research News article “The neurophysiological correlates of religious chanting.” (See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414545/), Gao and colleagues recruited participants who practiced Buddhist chanting for at least one year for 15 minutes per day. The participants were measured for brain electrical activity with the electroencephalogram (EEG) and for cardiac activity with an electrocardiogram (ECG) under 3 conditions, rest, silent Buddhist chanting (religious chanting), and silent chanting Santa Claus (non-religious chanting). One Buddhist monk who had spent years chanting underwent a function Magnetic Resonance Imaging (fMRI) brain scan under similar conditions.

 

They found that the fMRI revealed altered activity in the posterior cingulate cortex during religious vs. non-religious chanting. In the experienced chanters the EEG activity was found to have significantly higher power in the Delta low frequency region (1-4 Hertz) from the posterior cingulate cortex region during religious, but not non-religious chanting. In addition, the ECG had significantly lower power during religious, but not non-religious chanting.

 

These findings are very interesting and suggest that religious chanting has specific effects upon the brain and peripheral nervous system that might explain some of the benefits of this chanting. The lowered cardiac power suggests relaxation and a predominance of the parasympathetic division of the autonomic nervous system. This could in part be responsible for anti-stress effects of meditation practice.

 

The posterior cingulate cortex has been shown through multiple lines of evidence to be involved in self-referential thinking. Delta frequency waves are associated with reduced actual activity as they are increased during light sleep. Hence the results suggest that religious chanting suppresses thinking about the self. This is exactly what most meditation practices attempt to do. The results, then suggest that religious chanting is an effective contemplative practice in altering the brain activity to reduce self-referential thinking and peripheral nervous system activity to increase relaxation.

 

So, affect the brain with religious chanting.

 

“Mantras give the wandering mind a focal point. They produce a beat and a flow that is easy for the mind and body’s energy system to grasp a hold of. When the mind wants to wander out of the meditative state, the mantra helps bring it back.” – EOC

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Gao, J., Leung, H. K., Wu, B., Skouras, S., & Sik, H. H. (2019). The neurophysiological correlates of religious chanting. Scientific reports, 9(1), 4262. doi:10.1038/s41598-019-40200-w

 

Abstract

Despite extensive research on various types of meditation, research on the neural correlates of religious chanting is in a nascent stage. Using multi-modal electrophysiological and neuroimaging methods, we illustrate that during religious chanting, the posterior cingulate cortex shows the largest decrease in eigenvector centrality, potentially due to regional endogenous generation of delta oscillations. Our data show that these functional effects are not due to peripheral cardiac or respiratory activity, nor due to implicit language processing. Finally, we suggest that the neurophysiological correlates of religious chanting are likely different from those of meditation and prayer, and would possibly induce distinctive psychotherapeutic effects.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414545/

 

Reduce the Stress of Aging and Improve Quality of Life with Meditation

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Reduce the Stress of Aging and Improve Quality of Life with Meditation

 

By John M. de Castro, Ph.D.

 

“if we can delay the onset of memory loss by five years, we can reduce an individual’s chance of developing Alzheimer’s by 50 percent. Moreover, if you can keep your memory strong and vital 10 years longer than expected, you can forget about ever getting Alzheimer’s.” – Dharma Singh Khalsa

 

Human life is one of constant change. We revel in our increases in physical and mental capacities during development, but regret their decline during aging. As we age, there are systematic progressive declines in every system in the body, the brain included. This includes our mental abilities and results in impairments in memory, attention, and problem solving ability. It is inevitable and cannot be avoided. Aging also results in changes in mental health. Depression is very common in the elderly. The elderly cope with increasing loss of friends and family, deteriorating health, as well as concerns regarding finances on fixed incomes. All of these are legitimate sources of worry. In addition, many elderly experience withdrawal and isolation from social interactions. But, no matter how reasonable, the increased loneliness, worry and anxiety add extra stress that can impact on the elderly’s already deteriorating physical and psychological health.

 

Mindfulness appears to be effective for an array of physical and psychological issues that occur with aging. It appears to strengthen the immune system and reduce inflammation. It has also been shown to be beneficial in slowing or delaying physical and mental decline with aging. and improve cognitive processes. It has also been shown to reduce anxiety, worry, and depression and improve overall mental health. Since the global population of the elderly is increasing at unprecedented rates, it is imperative to investigate safe and effective methods to slow physical and mental aging and improve mental health in the elderly.

 

In today’s Research News article “Effects of Meditation versus Music Listening on Perceived Stress, Mood, Sleep, and Quality of Life in Adults with Early Memory Loss: A Pilot Randomized Controlled Trial.” See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5649740/, Innes and colleagues recruited older adults (over 50 years of age) with mild cognitive impairments and randomly assigned them to either relax and listen to classical music or practice Kirtan Kriya meditation for 12-minutes, once a day for 12 weeks. They were measured before and after treatment and again 3 months later for perceived stress, sleep quality, positive and negative moods, psychological well-being, health-related quality of life, memory, and cognitive ability. Retention of participants was high as only 8% dropped out of the study.

 

They found that after 12 weeks of practice both the music listening and the Kirtan Kriya meditation groups showed significant improvements in psychological well-being, mood, including anxiety, depression, confusion, anger, and fatigue, sleep quality, and health-related quality of life, including mental health, energy, and emotional well-being. These improvements were sustained 3 months after the conclusion of formal practice. Importantly, the Kirtan Kriya meditation group had significantly greater improvement in perceived stress, mood, psychological well-being, mental health-related quality of life than the music listening group.

 

These results suggest that relaxation in general produces sustained improvements in the well-being of older adults with mild cognitive impairments. But, Kirtan Kriya meditation practice produces greater improvements. The fact that there was a music listening control group suggests that it was the meditation per se and not just the relaxation inherent in meditation practice that was responsible for the improvements. This suggests that meditation practice is very beneficial of older adults with mild cognitive impairments improving their mental health, perceived stress, and well-being and that these improvements are sustained at least for 3 months. Since, these factors are associated with further cognitive decline, the results suggest that meditation practice may slow age-related cognitive decline.

 

So, reduce the stress of aging and quality of life with meditation.

 

“One of the major difficulties that individuals with dementia and their family members encounter is that there is a need for new ways of communicating due to the memory loss and other changes in thinking and abilities. The practice of mindfulness places both participants in the present and focuses on positive features of the interaction, allowing for a type of connection that may substitute for the more complex ways of communicating in the past. It is a good way to address stress.” – Sandra Weintraub

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

 

Kim E. Innes, Terry Kit Selfe, Dharma Singh Khalsa, Sahiti Kandati. Effects of Meditation versus Music Listening on Perceived Stress, Mood, Sleep, and Quality of Life in Adults with Early Memory Loss: A Pilot Randomized Controlled Trial. J Alzheimers Dis.  2016 Apr 8; 52(4): 1277–1298. doi: 10.3233/JAD-151106

 

Abstract

Background

Older adults with subjective cognitive decline (SCD) are at increased risk not only for Alzheimer’s disease, but for poor mental health, impaired sleep, and diminished quality of life (QOL), which in turn, contribute to further cognitive decline, highlighting the need for early intervention.

Objective

In this randomized controlled trial, we assessed the effects of two 12-week relaxation programs, Kirtan Kriya Meditation (KK) and music listening (ML), on perceived stress, sleep, mood, and health-related QOL in older adults with SCD.

Methods

Sixty community-dwelling older adults with SCD were randomized to a KK or ML program and asked to practice 12 minutes daily for 12 weeks, then at their discretion for the following 3 months. At baseline, 12 weeks, and 26 weeks, perceived stress, mood, psychological well-being, sleep quality, and health-related QOL were measured using well-validated instruments.

Results

Fifty-three participants (88%) completed the 6-month study. Participants in both groups showed significant improvement at 12 weeks in psychological well-being and in multiple domains of mood and sleep quality (p’s ≤ 0.05). Relative to ML, those assigned to KK showed greater gains in perceived stress, mood, psychological well-being, and QOL-Mental Health (p’s ≤ 0.09). Observed gains were sustained or improved at 6 months, with both groups showing marked and significant improvement in all outcomes. Changes were unrelated to treatment expectancies.

Conclusions

Findings suggest that practice of a simple meditation or ML program may improve stress, mood, well-being, sleep, and QOL in adults with SCD, with benefits sustained at 6 months and gains that were particularly pronounced in the KK group.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5649740/

Modulate Brain Processing of Emotions with Religious Chanting

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Modulate Brain Processing of Emotions with Religious Chanting

 

By John M. de Castro, Ph.D.

 

“Mantras – properly practiced –  turn negative emotions into life-enriching creativity. It’s that simple and that powerful.” – Eric Klein

 

Alternative and Complementary techniques have been growing in acceptance and use over the last couple of decades. With good reason. They have been found to be beneficial for physical and mental health. Contemplative practices have been shown to improve health and well-being. These include mindfulness practices, meditation, yoga, mindful movement practices such as tai chi and qigong, and spiritual practices such as contemplative prayer. These practices, when engaged in over a period of time, have been shown to change brain structure and electrical activity relatively permanently in a process known as neuroplasticity.

 

One ancient practice that is again receiving acceptance and use is chanting. It is a very common component of many contemplative practices. Chanting is claimed to be helpful in contemplative practice and to help improve physical and mental well-being. But, there is very little empirical research on chanting or their effectiveness. One problem in studying chanting is that they are embedded in a contemplative practice. It is difficult then to separate the effects of the chanting from that of the overall practice. So, it is important to study the effects of chanting while isolating and extracting them from the practices.

 

Contemplative practices have also been shown to improve emotion regulation, allowing the practitioner to completely feel emotions but reducing the reactivity to them. Emotions, however are difficult to measure directly. One method to indirectly observe information processing in the brain is to measure the changes in the electrical activity that occur in response to specific stimuli. These are called event-related potentials or ERPs. The signal following a stimulus changes over time. The fluctuations of the signal after specific periods of time are thought to measure different aspects of the nervous system’s processing of the stimulus.

 

The N100 response in the ERP is a negative going response occurring around a tenth of a second following a visual stimulus presentation. The N100 response has been associated with the engagement of visual attention. So, the N100 response is often used as a measure of brain attentional engagement with the larger the negative change the greater the attentional focus. The late positive potential (LPP) response in the ERP is a positive going response occurring between 3 and 6 tenths of a second following stimulus presentation. The LPP response has been associated with the presence of emotional information. As such, these electrical responses can be used to measure the brains response to emotional laden stimuli and can perhaps measure brain process of emotion regulation.

 

In today’s Research News article “Repetitive Religious Chanting Modulates the Late-Stage Brain Response to Fear- and Stress-Provoking Pictures.” See summary below or view the full text of the study at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5223166/

Gao and colleagues studied isolated chanting effects on emotion processing in the brain by recording event-related potentials, ERPs to emotion laden pictures while chanting. They recruited male and female adult, 42-50 years of age, Buddhists who had extensive experience with Buddhist chanting. They were presented with either neutral or emotionally negative pictures for 2 seconds while chanting for 20 seconds a religious chant, the word “Buddha”, or a secular chant, the words “Santa Claus”, or no chant. During each of the six, randomly presented conditions brain electrical activity was monitored with EEG electrodes and the electrical responses to the pictures was recorded (Event-Related Potentials, ERPs). To measure the physiological changes corresponding to negative emotions, electrocardiogram and galvanic skin response data were also collected.

 

They found that the N100 component was increased by viewing emotionally negative pictures but did not differ between chanting conditions. Hence, the negative pictures engaged visual attention equally regardless of chanting. They found that the LPP was strongest in the central-parietal regions of the brain. Viewing neutral pictures did not affect the LPP, but emotionally negative pictures produced a much smaller LPP responses, except in the chanting “Buddha” condition. This was not true for either no chant or chanting “Santa Clause.” Hence, the smaller late positive potential (LPP) in response to emotionally negative pictures while chanting “Buddha” was the same as that to neutral pictures. This indicates that emotion regulation is improved when engaging in the religious but not secular chanting.

 

These findings are interesting. Although the ERP is an indirect measure of brain activity to emotional stimuli, the late positive potential is associated with emotion regulation. The results suggest then that the smaller LPP response to emotionally negative pictures while chanting “Buddha”, is indicative of better emotion processing when engaged in a chant that has religious significance. Hence, the results suggest that religious chanting improves the important processes of regulating the responses to emotions. This suggests that spiritually significant activity may better prepare individuals to respond appropriately to their emotions.

 

So, modulate brain processing of emotions with religious chanting.

 

“The scans showed decreased blood flow to the parts of the brain that control emotion while chanting Om, when compared to another phrase. This suggests that the different forms of chanting prescribed in various mindfulness techniques (yoga or mindfulness meditation) can help manage negative emotions when practiced regularly.” – Pavitra Jayaraman

 

CMCS – Center for Mindfulness and Contemplative Studies

 

This and other Contemplative Studies posts are also available on Google+ https://plus.google.com/106784388191201299496/posts and on Twitter @MindfulResearch

 

Study Summary

Gao, J., Fan, J., Wu, B. W., Halkias, G. T., Chau, M., Fung, P. C., … Sik, H. (2016). Repetitive Religious Chanting Modulates the Late-Stage Brain Response to Fear- and Stress-Provoking Pictures. Frontiers in Psychology, 7, 2055. http://doi.org/10.3389/fpsyg.2016.02055

 

Abstract

Chanting and praying are among the most popular religious activities, which are said to be able to alleviate people’s negative emotions. However, the neural mechanisms underlying this mental exercise and its temporal course have hardly been investigated. Here, we used event-related potentials (ERPs) to explore the effects of chanting the name of a Buddha (Amitābha) on the brain’s response to viewing negative pictures that were fear- and stress-provoking. We recorded and analyzed electroencephalography (EEG) data from 21 Buddhists with chanting experience as they viewed negative and neutral pictures. Participants were instructed to chant the names of Amitābha or Santa Claus silently to themselves or simply remain silent (no-chanting condition) during picture viewing. To measure the physiological changes corresponding to negative emotions, electrocardiogram and galvanic skin response data were also collected. Results showed that viewing negative pictures (vs. neutral pictures) increased the amplitude of the N1 component in all the chanting conditions. The amplitude of late positive potential (LPP) also increased when the negative pictures were viewed under the no-chanting and the Santa Claus condition. However, increased LPP was not observed when chanting Amitābha. The ERP source analysis confirmed this finding and showed that increased LPP mainly originated from the central-parietal regions of the brain. In addition, the participants’ heart rates decreased significantly when viewing negative pictures in the Santa Claus condition. The no-chanting condition had a similar decreasing trend although not significant. However, while chanting Amitābha and viewing negative pictures participants’ heart rate did not differ significantly from that observed during neutral picture viewing. It is possible that the chanting of Amitābha might have helped the participants to develop a religious schema and neutralized the effect of the negative stimuli. These findings echo similar research findings on Christian religious practices and brain responses to negative stimuli. Hence, prayer/religious practices may have cross-cultural universality in emotion regulation. This study shows for the first time that Buddhist chanting, or in a broader sense, repetition of religious prayers will not modulate brain responses to negative stimuli during the early perceptual stage, but only during the late-stage emotional/cognitive processing.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5223166/