Non-pharmacologically induced altered states of consciousness that promote mental health and wellbeing are a growing focus of clinical and basic research. Previous work has revealed the mood-augmenting, belief-altering, and self-transcendent effects of aesthetic-chills-inducing audiovisual stimulation. The current study investigated how a guided loving kindness meditation (LKM) combined with...
Altered states of consciousness range from psychotic disintegration to mystical union, with oceanic affectivity - experiences of ego dissolution, boundlessness, and affective merging - constituting a central feature. While such states can be induced by psychedelics, they also occur through trauma, meditative practices, or within compulsive addictive cycles. In addition, oceanic states may offer...
This article proposes a dual-self states framework in which reflective and experiential modes of consciousness are understood as dynamic configurations along a processing continuum. The reflective/experiential self-state corresponds to narrative, denotational, and self-referential consciousness underpinned by default mode network activity. The experiential self state is characterized as an...
Psychedelic compound N,N-Dimethyltryptamine (DMT) is renowned for inducing highly immersive experiences, often including encounters with seemingly sentient presences. While such phenomena are well documented, immersion under psychedelics remains conceptually underdefined and phenomenologically underexplored. Here we apply micro-phenomenology to characterize immersion under DMT as a structured...
As direct-to-consumer ketamine prescriptions obtained via telehealth in the United States, along with psychedelic support, proliferate, some patients are turning to general-purpose chatbots as de facto "therapists" in unmonitored settings. These AI-guided altered-state sessions carry significant ethical, clinical, and legal risks. Current AI tools are not licensed professionals, lack consistent...
Psychedelics profoundly alter subjective experience and brain dynamics. Brain oscillations express signatures of near-critical dynamics, relevant for healthy function. Alterations in the proximity to criticality have been suggested to underlie the experiential and neurological effects of psychedelics. Here, we investigate the effects of a psychedelic substance (DMT) on the criticality of brain...
Acute subjective experiences induced by psychedelics have been identified as important mediators of therapeutic outcomes in many studies. Mystical experiences specifically, have been correlated with a range of therapeutic outcomes including reductions in symptoms of depression, anxiety and addiction. This paper assesses acute subjective experiences induced by an encapsulated DMT-harmala...
The quest to understand consciousness has spawned numerous theories, each offering unique perspectives but none achieving universal acceptance. While these theories provide valuable insights, they often serve more as guiding narratives than mechanistic frameworks for empirical validation. Here, we propose that incorporating critical brain dynamics - the idea that neural networks operate near a...
Meditation and psychedelics have separately been studied as powerful tools for probing consciousness through their capacity to deconstruct the sense of self. Yet, direct empirical comparisons remain scarce, particularly in expert meditators. Here, we report for the first time a case study in which an advanced meditator and Lama from the Mahāmudrā meditation tradition engaged in a traditional...
Despite extensive discussions, a consensus is lacking on whether out-of-body experiences (OBEs) and lucid dreams (LDs) should be considered as distinct categories of experience, and if so, what differentiates them. To address this issue, we first discussed the implications of OBEs and LDs as the same type of phenomenon. We then compiled a comprehensive list of experiential features associated...