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Jan 15, 2007

Effects of spiritual mantram repetition on HIV outcomes

Effects of spiritual mantram repetition on HIV outcomes: a randomized controlled trial.

J Behav Med. 2006 Aug;29(4):359-76

Authors: Bormann JE, Gifford AL, Shively M, Smith TL, Redwine L, Kelly A, Becker S, Gershwin M, Bone P, Belding W

We examined the efficacy of a psycho-spiritual intervention of mantram repetition--a word or phrase with spiritual associations repeated silently throughout the day--on psychological distress (intrusive thoughts, stress, anxiety, anger, depression), quality of life enjoyment and satisfaction, and existential spiritual well-being in HIV-infected adults. Using a 2-group by 4-time repeated measures design, 93 participants were randomly assigned to mantram (n = 46) or attention control group (n = 47). Over time, the mantram group improved significantly more than the control group in reducing trait-anger and increasing spiritual faith and spiritual connectedness. Actual mantram practice measured by wrist counters was inversely associated with non-HIV related intrusive thoughts and positively associated with quality of life, total existential spiritual well-being, meaning/peace, and spiritual faith. Intent-to-treat findings suggest that a mantram group intervention and actual mantram practice each make unique contributions for managing psychological distress and enhancing existential spiritual well-being in adults living with HIV/AIDS.

Neuro-ontological interpretation of spiritual experiences

Neuro-ontological interpretation of spiritual experiences.

Neuropsychopharmacol Hung. 2006 Oct;8(3):143-153

Authors: Frecska E, Luna LE

The prevailing neuroscientific paradigm considers information processing within the central nervous system as occurring through hierarchically organized and interconnected neural networks. The hierarchy of neural networks doesn't end at the neuroaxonal level; it incorporates subcellular mechanisms as well. When the size of the hierarchical components reaches the nanometer range and the number of elements exceeds that of the neuroaxonal system, an interface emerges for a possible transition between neurochemical and quantum physical events. "Signal nonlocality", accessed by means of quantum entanglement is an essential feature of the quantum physical domain. The presented interface may imply that some manifestations of altered states of consciousness, unconscious/conscious shifts have quantum origin with significant psychosomatic implications. Healing methods based on altered states of consciousness and common in spiritual or shamanic traditions escape neuroscientific explanations based on classical cognition denoted here as "perceptual-cognitive-symbolic" (characteristic of ordinary states of consciousness). Another channel of information processing, called "direct-intuitive-nonlocal" (characteristic of non-ordinary states of consciousness) is required to be introduced for interpretation. The first one is capable of modeling via symbolism and is more culturally bound due to its psycholinguistic features. The second channel lacks the symbolic mediation, therefore it has more transcultural similarity and practically ineffable for the first one, though culture specific transliteration may occur. Different traditional healing rituals pursue the same end: to destroy "profane" sensibility. The ritual use of hallucinogens, the monotonous drumming, the repeated refrains, the fatigue, the fasting, the dancing and so forth, create a sensory condition which is wide open to the so-called "supernatural". According to contemporary anthropological views, the breakdown of ordinary sensibility/cognition is not the ultimate goal, but the way to accomplish healing, that is psychointegration in the widest sense. From the perspective of system theory, integration needs information to be brought into the system. According to the presented model, when the coping capability of the "perceptual-cognitive-symbolic" processing is exhausted in a stressful, unmanageable situation, or its influence is eliminated by the use of hallucinogens or in case of transcendental meditation, a frame shift occurs, and the "spiritual universe" opens up through the "direct-intuitive-nonlocal" channel. There is little chance either for a psychointegrative effect, or for a meaningful "opening" without ritual context, and with the recreational use of mind altering strategies. Keywords: altered states of consciousness, cognition, cytoskeleton, dimethyltryptamine, ethnopharmacology, hallucinogenic agents, ritual healing.

Nov 22, 2006

Short-Term Autonomic and Cardiovascular Effects of Mindfulness Body Scan Meditation

Short-Term Autonomic and Cardiovascular Effects of Mindfulness Body Scan Meditation.

Ann Behav Med. 2006;32(3):227-234

Authors: Ditto B, Eclache M, Goldman N

Background: Recent research suggests that the Mindfulness-Based Stress Reduction program has positive effects on health, but little is known about the immediate physiological effects of different components of the program. Purpose: To examine the short-term autonomic and cardiovascular effects of one of the techniques employed in mindfulness meditation training, a basic body scan meditation. Methods: In Study 1, 32 healthy young adults (23 women, 9 men) were assigned randomly to either a meditation, progressive muscular relaxation or wait-list control group. Each participated in two laboratory sessions 4 weeks apart in which they practiced their assigned technique. In Study 2, using a within-subjects design, 30 healthy young adults (15 women, 15 men) participated in two laboratory sessions in which they practiced meditation or listened to an audiotape of a popular novel in counterbalanced order. Heart rate, cardiac respiratory sinus arrhythmia (RSA), and blood pressure were measured in both studies. Additional measures derived from impedance cardiography were obtained in Study 2. Results: In both studies, participants displayed significantly greater increases in RSA while meditating than while engaging in other relaxing activities. A significant decrease in cardiac pre-ejection period was observed while participants meditated in Study 2. This suggests that simultaneous increases in cardiac parasympathetic and sympathetic activity may explain the lack of an effect on heart rate. Female participants in Study 2 exhibited a significantly larger decrease in diastolic blood pressure during meditation than the novel, whereas men had greater increases in cardiac output during meditation compared to the novel. Conclusions: The results indicate both similarities and differences in the physiological responses to body scan meditation and other relaxing activities.

Sep 10, 2006

Meditation fosters awareness of subtle emotional feelings

Awareness of subtle emotional feelings: a comparison of long-term meditators and nonmeditators.

Emotion. 2006 Aug;6(3):392-405

Authors: Nielsen L, Kaszniak AW

The authors explored whether meditation training to enhance emotional awareness improves discrimination of subtle emotional feelings hypothesized to guide decision-making. Long-term meditators and nonmeditators were compared on measures of self-reported valence and arousal, skin conductance response (SCR), and facial electromyography (EMG) to masked and nonmasked emotional pictures, and on measures of heartbeat detection and self-reported emotional awareness. Groups responded similarly to nonmasked pictures. In the masked condition, only controls showed discrimination in valence self-reports. However, meditators reported greater emotional clarity than controls, and meditators with higher clarity had reduced arousal and improved valence discrimination in the masked condition. These findings provide qualified support for the somatic marker hypothesis and suggest that meditation may influence how emotionally ambiguous information is processed, regulated, and represented in conscious awareness.

Neuroimaging of meditation's effect on brain reactivity to pain

Neuroimaging of meditation's effect on brain reactivity to pain.

Neuroreport. 2006 Aug 21;17(12):1359-63

Authors: Orme-Johnson DW, Schneider RH, Son YD, Nidich S, Cho ZH

Some meditation techniques reduce pain, but there have been no studies on how meditation affects the brain's response to pain. Functional magnetic resonance imaging of the response to thermally induced pain applied outside the meditation period found that long-term practitioners of the Transcendental Meditation technique showed 40-50% fewer voxels responding to pain in the thalamus and total brain than in healthy matched controls interested in learning the technique. After the controls learned the technique and practiced it for 5 months, their response decreased by 40-50% in the thalamus, prefrontal cortex, total brain, and marginally in the anterior cingulate cortex. The results suggest that the Transcendental Meditation technique longitudinally reduces the affective/motivational dimension of the brain's response to pain.

Aug 08, 2006

Neural correlates of a mystical experience in Carmelite nuns

Neural correlates of a mystical experience in Carmelite nuns 
 
M. Beauregard, V. Paquette
 
Neuroscience Letters, (in press, corrected proof) 
 
The main goal of this functional magnetic resonance imaging (fMRI) study was to identify the neural correlates of a mystical experience. The brain activity of Carmelite nuns was measured while they were subjectively in a state of union with God. This state was associated with significant loci of activation in the right medial orbitofrontal cortex, right middle temporal cortex, right inferior and superior parietal lobules, right caudate, left medial prefrontal cortex, left anterior cingulate cortex, left inferior parietal lobule, left insula, left caudate, and left brainstem. Other loci of activation were seen in the extra-striate visual cortex. These results suggest that mystical experiences are mediated by several brain regions and systems.