Spiritual experiences during meditation are widely reported across traditions and skill levels, and a growing body of neuroscience research confirms they correspond to measurable changes in brain activity, connectivity, and even structure. These experiences range from a quiet sense of unity and meaning to dramatic states involving loss of body awareness, dissolution of the sense of self, and feelings of profound interconnection. What makes them interesting from a scientific standpoint is that they are not random or idiosyncratic. Brain-imaging studies consistently show that meditators enter states with distinct neural signatures, and that these signatures grow more pronounced with practice.
What These Experiences Actually Feel Like
People use words like “transcendence,” “oneness,” “bliss,” “ego dissolution,” and “timelessness” to describe spiritual experiences during meditation, but those labels can sound vague until you hear what meditators actually report. The core feature, across many traditions, is a shift in how the meditator relates to their own awareness. Normally, your experience has a built-in subject-object structure: there is a “you” looking at “something.” During transcendental meditation experiences, that structure loosens or collapses. Meditators describe the absence of the usual sense of time, space, and body, which are the frameworks that typically give waking experience its shape and meaning.1PubMed. Transcendental experiences during meditation practice
A qualitative study of long-term meditators identified eight recurring themes in their experience, including the cultivation and deepening of personal spirituality, transcendent peak experiences, increased equanimity and compassion, and a growing sense of life purpose and meaning.2Journal of Humanistic Psychology. Calm Abiding These aren’t separate items on a checklist; they tend to emerge together over time, with transcendent moments arriving unpredictably during otherwise routine practice sessions. Many meditators describe them as the most personally significant experiences of their lives, even when the experiences themselves are subtle rather than dramatic.
In Tibetan Buddhist practice, one well-studied version of this is called nondual awareness: a background awareness that precedes the usual conceptual thinking and does not divide experience into habitual dualities like self versus other or good versus bad.3PubMed. Neural correlates of nondual awareness in meditation Practitioners describe it less as “achieving” something and more as recognizing something already present in the stream of consciousness. The language varies by tradition, but the phenomenological overlap is striking.
The Brain During Spiritual Meditation States
One of the most consistent findings in meditation neuroscience involves the default mode network, a set of brain regions that are active when you’re daydreaming, thinking about yourself, or mentally wandering. During meditation, experienced practitioners show reduced activity in the main hubs of this network, particularly the medial prefrontal cortex and the posterior cingulate cortex, and this reduction holds across different meditation styles.4PubMed Central. Meditation experience is associated with differences in default mode network activity and connectivity A separate study confirmed that meditators showed lower default mode network activity compared to non-meditators not just during meditation versus rest, but even when compared to another active cognitive task, with reduced activity in the anterior cingulate cortex, precuneus, and other regions.5PubMed Central. Meditation leads to reduced default mode network activity beyond an active task
Why does this matter for spiritual experiences specifically? The default mode network is closely tied to self-referential processing, the inner monologue that narrates your identity and your place in the world. When that network quiets down, the result lines up with what meditators report: a loosening of the usual sense of “I,” a fading of the mental chatter that normally fills awareness. The experience of ego dissolution or selflessness that meditators describe as spiritual has a plausible neural correlate in this quieting.
Beyond the default mode network, meditators also show elevated high-frequency gamma brainwave activity, particularly in the parieto-occipital region. A study of three different meditation traditions found that all meditators produced stronger gamma waves in the 60 to 110 Hz range compared to controls, and that this gamma power was positively correlated with total hours of meditation experience.6PLoS ONE. Increased Gamma Brainwave Amplitude Compared to Control in Three Different Meditation Traditions Gamma activity is generally associated with heightened awareness, sensory binding, and moments of insight, which fits the subjective reports of clarity and perceptual richness during deep practice.
Deep Absorption and the Jhana States
Some of the most dramatic spiritual experiences occur during deep concentrative absorption meditation, known in Buddhist terminology as jhana. These are states that practitioners describe as moving through progressive levels of absorption, each marked by distinct shifts in pleasure, equanimity, and awareness. Studying them in a lab is difficult because very few people can enter them reliably, but a handful of intensive case studies have produced remarkable data.
One such study combined brain imaging with moment-by-moment reports from a practitioner with over 23,000 hours of meditation experience. Using both fMRI and EEG, researchers found that jhana states were associated with decreased modularity within brain networks, increased global functional connectivity, and a desegregation of the default mode and visual networks. EEG showed widespread decreases in oscillatory power alongside increases in a measure of brain entropy called Lempel-Ziv complexity.7PubMed Central. Multimodal neurophenomenology of advanced concentration absorption meditation: An intensively sampled case study of Jhana In plain terms, the brain was becoming more globally integrated and less compartmentalized, while also becoming more complex in its moment-to-moment activity. That combination is unusual; normal waking consciousness tends toward more segregated, modular processing.
A separate 7T MRI study of jhana meditation confirmed that brain activity during these states was unique compared to ordinary consciousness, with patterns of local brain activity varying across both brain regions and specific jhana levels. The phenomenological qualities that meditators reported, such as bliss, equanimity, or boundless awareness, were represented by specific brain activations.8Cerebral Cortex. Intensive whole-brain 7T MRI case study of volitional control of brain activity in deep absorptive meditation states Another study found that jhana meditation disrupts the brain’s usual hierarchical organization, shifting functional connectivity gradients toward a more globally integrated state while increasing the differentiation between sensory and attention-related regions.9Cerebral Cortex. Advanced concentrative absorption meditation reorganizes functional connectivity gradients of the brain
These are case studies, not large trials, and they involve extraordinarily experienced meditators. But they suggest that the spiritual experiences described in contemplative traditions aren’t just poetic metaphors. The brain genuinely reorganizes its functional architecture during these states in ways that match what practitioners report feeling.
Body Sensations and Energetic Phenomena
Not all meditation-related spiritual experiences are purely mental. Many meditators report vivid physical sensations: heat rising along the spine, tingling in the hands or crown of the head, involuntary movements, and waves of energy. In the Hindu and Tantric traditions, these are often described in the language of kundalini, a dormant energy said to rise through the body’s energy centers.
A pilot study using a semi-structured questionnaire found that meditators practicing Tantric yoga meditation reported multiple descriptions of rising sensations, sometimes identified directly as kundalini. These experiences were complex and frequently accompanied by positive affect, including what participants described as ecstatic qualities.10PubMed Central. Characteristics of Kundalini-Related Sensory, Motor, and Affective Experiences During Tantric Yoga Meditation Whether you interpret these as literal energy phenomena or as the brain’s processing of unusual interoceptive signals during altered states, they are a real and commonly reported part of the spiritual landscape of meditation.
On the physiological side, group meditation has been associated with measurable drops in heart rate and specific shifts in heart rate variability. One study of a meditation community found that the lowest heart rate values coincided with meditation periods, and that heart rate variability dropped significantly at consistent times during practice, precisely when a measure of psychophysiological coherence reached its highest values.11OBM Integrative and Complementary Medicine. Psychophysiological Coherence in Community Dynamics – A Comparative Analysis between Meditation and Other Activities The body, in other words, isn’t a passive bystander during spiritual meditation experiences. It participates.
Does Spiritual Intent Change the Outcome?
One question that comes up frequently is whether it matters what you meditate on. Is spiritual meditation functionally different from secular meditation or plain relaxation? At least one controlled study says yes. Researchers compared three groups: one practicing spiritual meditation using a phrase with spiritual meaning, one using a secular phrase, and one practicing relaxation alone. The spiritual meditation group showed greater decreases in anxiety, more positive mood, and higher scores on measures of spiritual health and spiritual experience than either of the other two groups. They also tolerated experimentally induced pain almost twice as long.12PubMed. Is spirituality a critical ingredient of meditation? Comparing the effects of spiritual meditation, secular meditation, and relaxation on spiritual, psychological, cardiac, and pain outcomes
This doesn’t mean that secular meditation is useless, of course. But it does suggest that the content and intention of meditation shapes the experience in ways that go beyond simple calming. If you’re using meditation as a spiritual practice, the spiritual dimension of your experience isn’t just interpretation layered on top of relaxation. It appears to affect outcomes in measurable ways, including physiological ones like pain tolerance.
Structural Changes in the Brain
The neural effects of meditation aren’t limited to what happens during a session. A systematic review of neurobiological changes induced by mindfulness and meditation found that an eight-week mindfulness-based stress reduction course led to significantly increased cortical thickness in the right insula and somatosensory cortex compared to a control group. The same review noted that high spirituality was associated with higher metabolic activity in certain brain regions.13PubMed Central. Neurobiological Changes Induced by Mindfulness and Meditation: A Systematic Review The insula is involved in interoception, your awareness of internal bodily states, which makes its thickening particularly relevant for meditators who report heightened sensitivity to internal sensations as their practice deepens.
These structural changes suggest a feedback loop. As the brain physically adapts to repeated meditation practice, the meditator’s capacity for the kinds of awareness involved in spiritual experience may grow. The experiences aren’t just subjective reports floating free of the body; they’re grounded in neural tissue that is being reshaped by the practice itself.
When Spiritual Experiences Become Difficult
The conversation around meditation-related spiritual experiences tends to focus on the positive: peace, insight, bliss, connection. But a minority of meditators report deeply challenging experiences. Some practitioners go through periods of anxiety, confusion, depression, disillusionment, and loss of meaning. In rare cases, these episodes have been severe enough that practitioners have reported suicidal thoughts. Researchers have characterized this as the “dark side” of meditation, noting that these spiritual travelers often don’t view their suffering as clinical depression. Some interpret the experience as a necessary phase of spiritual deepening, treating it as an opportunity for reflection and transformation rather than as pathology.
This is worth taking seriously because the meditation community sometimes treats difficult experiences as either a sign of doing it wrong or as a badge of progress, neither of which is always accurate. The reality is that altering your relationship to your own sense of self, which is what deep meditation does, can be destabilizing. If the default mode network is quieting and the usual self-narrative is loosening, the result is not always bliss. Sometimes it is confusion or fear. People who practice intensively, especially in retreat settings without adequate guidance, are more vulnerable to these experiences.
How Context and Environment Shape Spiritual Experience
The setting in which meditation takes place matters more than many practitioners realize. A recent study examined the practice of dark therapy, where meditators undergo extended periods in complete darkness combined with social seclusion and the guidance of an authority figure. Researchers found that combining sensory deprivation with social seclusion and the influence of authority was a potent practice for the induction of spiritual and other special experiences.14Archive for the Psychology of Religion. Sensing the darkness: Dark therapy, authority, and spiritual experience This finding has implications beyond niche retreat practices. It suggests that the neural and psychological conditions for spiritual experience can be amplified by environmental factors, and that what we attribute to pure “internal” spiritual development may partly reflect the context in which practice occurs.
Cross-cultural research supports this point from another angle. A qualitative study comparing Greek and Indian meditators found more similarities than differences in how people from these very different cultural backgrounds understand and describe meditation, suggesting that some elements of the meditation experience reflect something fundamental about human cognition that transcends cultural framing. At the same time, the study identified variations in how participants made meaning of their experiences, the role they assigned to teachers, and the mechanisms they believed were at work. Culture doesn’t determine whether spiritual experiences happen, but it shapes the lens through which they are understood and described.
The Resilience Connection
For some practitioners, the spiritual dimensions of meditation become most meaningful during crisis. A pilot study of long-term meditators who had been diagnosed with breast cancer found that spiritually focused meditation practice contributed to increased well-being and resilience during diagnosis and treatment. The researchers observed that these practices appeared to increase emotional, physical, and spiritual well-being in ways that might translate to better physiological outcomes, though they noted more research was needed.15PubMed. Spiritual Experiences of Long-Term Meditation Practitioners Diagnosed with Breast Cancer: An Interpretative Phenomenological Analysis Pilot Study
This is a small study, and it would be premature to draw broad conclusions from three participants. But it illustrates a pattern that shows up repeatedly in the literature: spiritual experiences during meditation don’t just feel meaningful in the moment. They often translate into durable psychological resources, including a sense of meaning, equanimity, and the ability to face suffering without being overwhelmed by it. The question of whether this is because the experience itself is therapeutic or because the kind of person who meditates deeply is already psychologically resilient is one that research is still working to disentangle.
The Measurement Problem
Studying spiritual experience scientifically confronts a fundamental challenge: how do you objectively measure something that is, by definition, subjective? Research into the neuroscience of spiritual practices faces unique difficulties in correlating objective measures like brain imaging and physiological data with subjective reports that capture states of spiritual significance.16PubMed Central. The neuroscientific study of spiritual practices
The field has developed a range of psychometric tools to try to standardize the measurement of these experiences. An integrative review identified at least 12 unique instruments used in experimental studies, with the most common being the Mystical Experience Questionnaire, the Functional Assessment of Chronic Illness Therapy Spirituality scale, and the Persisting Effects Questionnaire.17PubMed. An Integrative Review of Measures of Spirituality in Experimental Studies of Psilocybin in Serious Illness Populations These instruments were developed largely in the context of psychedelic research, where participants also report mystical-type experiences, and they have been adapted for use in meditation research as well. The Mystical Experience Questionnaire, for instance, asks about feelings of unity, sacredness, noetic quality (a sense of encountering deep truth), and deeply felt positive mood.
The proliferation of instruments reflects a genuine difficulty. Spiritual experiences are not one thing. A meditator who reports a loss of self-other boundaries is describing something different from one who reports a surge of devotional love, and both are different from the practitioner who reports an experience of pure empty awareness. The measurement tools capture overlapping but distinct dimensions, and no single instrument covers all of them. Researchers are still working out which tools are best suited to which traditions and practice contexts, and whether the underlying constructs can be unified into a coherent framework or are genuinely separate phenomena sharing a loose family resemblance.
Sensory Reduction as a Shortcut
The fact that sensory deprivation reliably intensifies spiritual-type experiences raises an interesting question about the relationship between meditation and the brain’s processing of sensory input. Traditional meditation instructions across many lineages involve closing the eyes, sitting still, and reducing external stimulation, which are mild forms of sensory reduction. Retreat settings take this further with silence, simplified environments, and reduced social contact. Dark retreats represent the extreme end. The research on dark therapy and spiritual experience suggests that reducing sensory input doesn’t just remove distractions. It may actively change what the brain does, shifting resources away from processing the external world and toward the kind of internally generated experiences that meditators describe as spiritual.18Archive for the Psychology of Religion. Sensing the darkness: Dark therapy, authority, and spiritual experience
This aligns with the jhana research, where deep absorption states are characterized by a decoupling of sensory-related brain regions from higher-order cognitive areas.19Cerebral Cortex. Advanced concentrative absorption meditation reorganizes functional connectivity gradients of the brain In both cases, the brain seems to move into a mode of operation where the usual flow of sensory information becomes less dominant and internally generated states become more vivid. Whether that shift is best understood as the brain revealing something always present beneath the noise of daily perception, as many contemplative traditions claim, or as the brain generating novel states in the absence of its usual input, remains an open and genuinely interesting question. The neuroscience so far is consistent with either reading, which is part of what makes the field both frustrating and fascinating.