Search Results (16)

Background/purpose: Fiber-reinforced materials are commonly used as biobases beneath indirect restorations, potentially affecting the seating and marginal accuracy of the restorations. This study intended to assess the impact of various biobase techniques on the marginal adaptation of lithium disilicate overlay restorations. Methods: Fifty sound maxillary first premolar teeth of comparable dimensions were prepared using a full-bevel overlay design (3 mm occlusal reduction) and allocated randomly to five groups as follows (n = 10): Group A, delayed dentin sealing; Group B, immediate dentin sealing using Optibond FL; Group C, immediate dentin sealing with a 1 mm flowable composite layer (Clearfil AP-X Flow); Group D, immediate dentin sealing followed by a 1 mm short-fiber-reinforced composite layer (everX Flow); and Group E, immediate dentin sealing coated with a 1 mm flowable composite layer reinforced with polyethylene Ribbond fibers. Digital impressions were obtained using a Medit i700 intraoral scanner, and the overlays were digitally designed via the Sirona inLab CAD software and milled via a four-axis milling machine. The overlays were luted with a preheated composite (Clearfil AP-X). Marginal gap assessments were conducted pre- and post-cementation via a digital microscope at 230× magnification. The data were statistically analyzed using a one-way analysis of variance and paired t-tests. Results: The one-way ANOVA disclosed no significant differences among the groups before or after cementation (p > 0.05). Conclusions: The presence or absence of fiber-reinforced biobases did not impact the marginal adaptation of the restorations; these biobases can be incorporated to optimize the mechanical behavior of indirect restorations without adversely affecting their seating accuracy. These findings suggest that fiber-reinforced and non-reinforced biobase techniques can be safely integrated into clinical adhesive protocols to enhance the mechanical performance of restorations without comprising their marginal adaptation. Full article

“Sounding Grief in Henry Dumas’s ‘Echo Tree’” engages Dumas’s experimental short story about two youths discussing how to speak to the dead while on a Southern hillside at dusk. This article studies how this short story meditates on how grief affects our engagement with and reliance upon voiced languages to express a desire for communion that persists beyond death. “Echo Tree”, the article argues, reveals how openness to grief, and the subsequent desire for communication with the dead, improves the imaginative capacity needed for empathetic alignment among the living. In its presentation of the psychological and imaginative difficulties of performing a call-and-response with the dead, “Echo Tree” also analogizes how a reader engages in an act of call-and-response with a muted acousmatic voice from the printed page. Full article

Running is a popular sport throughout the world. Breathing strategies like stable breathing and slow breathing can positively influence the runner’s physiological and psychological experiences. Sonic breathing instructions are an established, unobtrusive method used in contexts such as exercise and meditation. We argue sound to be a viable approach for administering breathing strategies whilst running. This paper describes two laboratory studies using within-subject designs that investigated the usage of sonic breathing instructions with novice female runners. The first study (N = 11) examined the effect of information richness of five different breathing instruction sounds on adherence and user experience. The second study (N = 11) explored adherence and user experience of sonically more enriched sounds, and aimed to increase the sonic experience. Results showed that all sounds were effective in stabilizing the breathing rate (study 1 and 2, respectively: mean absolute percentage error = 1.16 ± 1.05% and 1.9 ± 0.11%, percent time attached = 86.81 ± 9.71% and 86.18 ± 11.96%). Information-rich sounds were subjectively more effective compared to information-poor sounds (mean ratings: 7.55 ± 1.86 and 5.36 ± 2.42, respectively). All sounds scored low (mean < 5/10) on intention to use. Full article

Choral music and the sacred have been intertwined since the Middle Ages. With the increasing secularisation of society, it is notable that the sacred choral canon continues to expand and attract audiences in religious and secular spaces, underlining the enduring importance of tradition and the human desire to search for something beyond our existence. The practice of setting sacred texts to music abounds in the work of contemporary composers, continuing the historic tradition into the present day via a wide range of compositional and stylistic approaches. In his sacred works, Irish composer Eoghan Desmond achieves a sound that fuses the past and present, exhibiting both the visceral and meditative aspects associated with the texts that he sets. This article focuses on the composer’s choral work Nothing in Vain (2021), a setting of John Henry Newman’s ‘A Meditation on Trust in God’. Through critical score analysis, I highlight Desmond’s ability to reflect Newman’s devotion to God and to evoke a sense of the spiritual through his formal organisation and application of harmonic, rhythmic, and textural techniques, drawing on influences from the Renaissance tradition, the contemporary style of ambient music, and the work of well-known composer James MacMillan. Desmond’s synthesis of ancient and contemporary compositional practices invites all listeners to engage in this musical meditation and contemplate the message of the spiritual text. Full article

This study aims to verify if the beating sound of a singing bowl synchronizes and activates brain waves during listening. The singing bowl used in this experiment produce beats at a frequency of 6.68 Hz, while it decays exponentially and lasts for about 50 s. Brain waves were measured for 5 min in the F3 and F4 regions of seventeen participants (eight males and nine females, average age 25.2) who heard the beating singing bowl sounds. The experimental results showed that the increases (up to ~251%) in the spectral magnitudes of the brain waves were dominant at the beat frequency compared to those of any other clinical brain wave frequency bands. The observed synchronized activation of the brain waves at the beating sound frequency supports that the singing bowl sound may effectively facilitate meditation and relaxation, considering that the beat frequency belongs to the theta wave region which increases in the relaxed meditation state. Full article

Study objective: Long COVID patients can experience high levels of impairment in their cognitive function and mental health. Using a parallel randomized control trial, we evaluated the effectiveness of a neuro-meditation program to reduce cognitive impairment in patients with long COVID. Methods: A total of 34 patients with long COVID were randomized to an intervention group (G-Int; n = 17) or a control group (G-Con; n = 17) and 15 healthy participants were constitutive of a normative group (G-Nor). The intervention consisted of ten 30-min sessions of Rebalance^® over a period of five weeks. Each session included sound therapy and coach-guided meditation associated with light stimulations (i.e., chromotherapy). Primary outcomes were performance on five computerized cognitive tasks (choice response time, pattern comparison, Simon, pursuit rotor task, and Corsi block-tapping task), mental and physical fatigue (Chalder fatigue scale), perceived stress (perceived stress scale) and mood (profiles of mood states). Secondary outcomes were anxiety and depressive symptoms (hospital anxiety and depression scale), muscular pain, joint pain, and headaches using visual analog scales (VAS) as well as sleep quality (Spiegel sleep questionnaire). Assessments were conducted at baseline and at 1–2 and 7–8 days of follow-up. Results: Compared to healthy subjects, long COVID patients showed significant differences at baseline on all the self-report questionnaires, and a Rebalance^® program improved all the subjective reports, as well as cognitive performances, especially on reaction time-based tasks. In particular, only the G-Int group revealed shortened reaction times in the choice reaction time (RT_baseline = 593 ± 121 ms vs. RT_post2 = 521 ± 86 ms, p < 0.001), Simon (RT_baseline = 539 ± 123 ms vs. RT_post2 = 494 ± 134 ms, p < 0.01), and pattern comparison tasks (RT_baseline = 1244 ± 315 ms vs. RT_post2 = 1079 ± 213 ms, p < 0.001). Conclusions) Initial evidence suggests that neuro-meditation reduces cognitive impairment and improves physical and mental fatigue, muscle and joint pain, symptoms of depression and anxiety, mood disturbances as well as sleep quality. The Rebalance^® program hence constitutes a promising non-pharmacological intervention for the treatment of long-term psychological/cognitive outcomes of COVID-19. Full article

We would like to congratulate Sachdeva and colleagues for establishing an informative review regarding the effects of music/sound exposure on blood–brain barrier permeability and meningeal lymphatic/glymphatic clearance, and would appreciate the opportunity to make a comment. The review by Sachdeva and colleagues documents the beneficial effects of sound interventions on blood–brain barrier permeability and the activity of the meningeal lymphatic/glymphatic system. The authors further note that sound interventions may have the potential to reduce the accumulation of amyloid-β within the brain in Alzheimer’s disease through improved meningeal lymphatic/glymphatic clearance. The authors also nicely discuss evidence that music influences sleep quality, which may facilitate glymphatic solute clearance as a result of an increase in the interstitial space, which results in reduced resistance to fluid transport. We fully agree with this notion, since we recently hypothesized that immersive sound therapy may be an innovative approach to reduce the individual risk of developing neurodegenerative diseases, such as Alzheimer’s disease, by inducing EEG slow-wave delta oscillations (which characterize deep sleep), thereby promoting glymphatic clearance. Full article

Mind–Body Medicine (MBM) includes a broad range of interventions with proven preventive and clinical value, such as yoga and meditation. However, people differ in their preferences and response to different MBM treatments and it remains unclear who benefits most from what type of practice. Thus, finding moderators of treatment outcome seems to be a promising approach. This was the aim of the present study. We conducted a single-case multiple-baseline study investigating the outcomes and moderators of four different MBM treatments. Fifty-seven healthy participants with no prior experience were randomly assigned to three baselines (7, 14, and 21 days) and four eight-week treatments: mantra meditation alone, meditation plus physical yoga, meditation plus ethical education and meditation plus yoga and ethical education. We analysed the data using effect size estimation, multiple regression and cluster analyses. High anxiety, high absorption, low spirituality, low openness and younger age were associated with a range of positive outcomes, such as increased wellbeing or decentering and decreased mind wandering. Receiving ethical education consistently improved wellbeing, while engaging in physical yoga reduced mind wandering. In the cluster analysis, we found that participants with a more maladaptive personality structure enhanced their emotion regulation skills more. Consequently, people do differ in their response to MBM interventions and more vulnerable people, or those high in absorption, seem to benefit more. These findings could support the development of custom-tailored MBM interventions and help clinicians to make scientifically sound recommendations for their patients. Full article

We review processes by which different sounds, such as meditation music, mantra, kindness, or hatred expressions, and noises induce responses from cells and their components. We define ‘good’ or ‘bad’ sounds as those enhancing or inhibiting the cell’s biological activity, respectively. It is highlighted that the cellular dynamics results in a coherent organization with the formation of ordered patterns due to long-range correlations among the system constituents. Due to coherence, in the framework of quantum field theory, extended domains become independent of quantum fluctuations. Non-dissipative energy transfer on macromolecule chains is briefly discussed. Observed fractal features are analyzed by the fast Fourier transform and a linear relationship between logarithms of conjugate variables is observed. The fractal relation to the generation of forms (morphogenesis) and to the transition from form to form (metamorphosis) is commented. The review is also motivated by the suggestions coming from the cells’ responses, which show their ability to move from the syntactic level of the sound component frequencies to the semantic level of their collective envelope. The process by which sounds are selected to be good or bad sounds sheds some light on the problem of the construction of languages. Full article

Background and Objectives: In recent years, singing bowl sound interventions have been progressively implemented in the fields of well-being, therapy and education; however, the effectiveness has only scarcely been investigated. Therefore, this study was aimed at determining neurophysiological effects of a singing bowl massage. Materials and Methods: In this prospective cohort study 64-channel EEG, ECG and respiration was recorded from 34 participants (mean age 36.03 ± 13.43 years, 24 females/10 males) before, during and after a professional singing bowl massage. Further, subjective changes in well-being were assessed. EEG data were analyzed by determining the effect sizes of distinct frequency bands. Significant differences were calculated by a two-tailed t-test corrected for multiple comparisons. Heart rate variability metrics, heart rate and respiration rate were estimated and compared. Results: Overall EEG power decreased during the sound condition compared to a task-free resting state (d = −0.30, p = 0.002). After the intervention, global EEG power was further reduced (d = −0.46, p < 0.001), revealing a decrease in the beta 2 (d = −0.15, p = 0.002) and the gamma frequency band (d = −0.21, p = 0.004). The mean heart rate was significantly lower after the intervention (75.5 ± 19.8 vs. 71.5 ± 17.9, p < 0.001) and the respiration rate higher (13.5 ± 5.3 vs. 15.2 ± 6.3, p = 0.018). 91.2% of the participants felt more integrated, 97.1% more balanced and 76.5% more vitalized. Conclusions: The neurophysiological effects of a singing bowl sound massage may be interpreted as a shift towards a more mindful, meditative state of consciousness. The intervention was perceived as beneficial for the wellbeing. Full article

Psychosocial stress, tension, and depression are quite common in many parts of the developed world. Integrative medicine techniques which may potentially increase spiritual and emotional well-being may be useful in combating chronic psychosocial stress, as well as challenges with depression and excessive tension. The present observational study examines the effect of singing-bowl sound healing on emotional and spiritual well-being and particularly examines interrelationships between changes in spiritual well-being with changes in tension and depressed mood post-sound healing. Participants experienced a sound healing environment of vibrational musical instruments such as singing bowls (bell-like instruments), gongs, and other vibrational instruments. Sixty-two participants were examined in an observational study using singing-bowl sound healing. Emotional and spiritual well-being were examined by utilizing standardized questionnaires. Results revealed significant correlations between improvements in scores of spiritual well-being and reductions in scores of tension and depression post-sound healing. Moreover, effects varied by age of the study participants. Specifically, the association between spiritual well-being improvement and depression improvement was strongest for ages 31–40, while spiritual well-being improvement and tension improvement associations were strongest for ages 51–60. Implications for applying sound healing meditations as a potential low-cost, low-technology therapeutic technique are discussed for emotional and spiritual well-being. Full article

Kirtan is a musical worship practice from India that involves the congregational performance of sacred chants and mantras in call-and-response format. The style of kirtan performed within Gaudiya Vaishnava Hinduism is an expression of Bhakti Yoga, “the yoga of love and devotion”, and focuses on creating a personal, playful, and emotionally intense connection between the worshipper and their god—specifically, through words and sounds whose vibration is believed to carry the literal presence of Krishna. Kirtan is one of many Indian genres that uses musical techniques to move participants through a progression of spiritual states from meditation to ecstasy. Kirtan-singing has become internationally popular in recent decades, largely thanks to the efforts of the Hare Krishna movement, which has led to extensive hybridization of musical styles and cultural approaches to kirtan adapted to the needs of a diasporic, globalized community of worshippers. This essay explores the practice of kirtan in the United States through interviews, fieldwork, and analysis of recordings made at several Krishna temples and festivals that demonstrate the musical techniques that can be spontaneously deployed in acts of collective worship in order to create intense feelings of deep, focused meditation and uninhibited, expressive bliss. Full article

This article connects recent work in critical race studies, museum studies, and performance studies to larger conversations happening across the humanities and social sciences on the role of performance in white public spaces. Specifically, I examine the recent trend of museums such as the Natural History Museum of London, the Metropolitan Museum of Art in New York, and the Museum of Fine Arts in Boston, to name but a few, offering meditation and wellness classes that purport to “mirror the aesthetics or philosophy of their collections.” Through critical ethnography and discursive analysis I examine and unpack this logic, exposing the role of cultural materialism and the residue of European imperialism in the affective economy of the museum. I not only analyze the use of sound and bodily practices packaged as “yoga” but also interrogate how “yoga” cultivates a sense of space and place for museum-goers. I argue that museum yoga programs exhibit a form of somatic orientalism, a sensory mechanism which traces its roots to U.S. American cultural-capitalist formations and other institutionalized forms of racism. By locating yoga in museums within broader and longer processes of racialization I offer a critical race and feminist lens to view these sorts of performances. Full article

A novel interactive system for calligraphy called mind calligraphy that reflects the writer’s emotions in real time by affective computing and visualization techniques is proposed. Differently from traditional calligraphy, which emphasizes artistic expression, the system is designed to visualize the writer’s mental-state changes during writing using audio-visual tools. The writer’s mental state is measured with a brain wave machine to yield attention and meditation signals, which are classified next into the four types of emotion, namely, focusing, relaxation, calmness, and anxiety. These emotion types then are represented both by animations and color palettes for by-standing observers to appreciate. Based on conclusions drawn from data collected from on-site observations, surveys via Likert-scale questionnaires, and semi-structured interviews, the proposed system was improved gradually. The participating writers’ cognitive, emotional, and behavioral engagements in the system were recorded and analyzed to obtain the following findings: (1) the interactions with the system raise the writer’s interest in calligraphy; (2) the proposed system reveals the writer’s emotions during the writing process in real time via animations of mixtures of fish swimming and sounds of raindrops, insects, and thunder; (3) the dynamic visualization of the writer’s emotion through animations and color-palette displays makes the writer understand better the connection of calligraphy and personal emotions; (4) the real-time audio-visual feedback increases the writer’s willingness to continue in calligraphy; and (5) the engagement of the writer in the system with interactions of diversified forms provides the writer with a new experience of calligraphy. Full article

This paper focuses on the branch of Santmat (thus far, unstudied by scholars of Indian religions), prevalent in the rural areas of Bihar, India. Santmat—literally meaning “the Path of Sants” or “Point of View of the Sants”—of Bihar represents a unique synthesis of the elements of the Vedic traditions, rural Hindu practices, and esoteric experiences, as recorded in the poetry of the medieval Sant Tradition. I characterize this tradition as “Santmat of Bihar” to differentiate it from the other branches of Santmat. The tradition has spread to all parts of India, but its highest concentration remains in Bihar. Maharishi Mehi, a twentieth-century Sant from Bihar State, identifies Santmat’s goal as śānti. Maharishi Mehi defines Śānti as the state of deep stillness, equilibrium, and the unity with the Divine. He considers those individuals sants who are established in this state. The state of sublime peace is equally available to all human beings, irrespective of gender, religion, ethnicity, or status. However, it requires a systematic path. Drawing on the writings of the texts of Sanātana Dharma, teachings of the Sants and personal experiences, Maharishi Mehi lays out a systematic path that encompasses the moral observances and detailed esoteric experiences. He also provides an in-depth description of the esoteric practices of divine light (dṛṣti yoga) and sound (surat śabda yoga) in the inner meditation. After providing a brief overview of the history and distinctive features of Santmat of Bihar, this paper will focus on the specifics and unique interpretations of the four structural principles of the tradition: Guru (spiritual teacher), dhyān (inner path of mediation), satsaṅg (spiritual discourses or congregating practitioners for meditation or study), and sadācār (moral conduct). Through a close analysis of textual sources, Sants’ oral discourses that I translated, as well as insights from my participant-observant experiences, I will examine how the four elements reorient the practitioner from the mundane world to the sacred inner experience of śānti. Full article