Measuring Subjective Effects
Open-science methods, validated questionnaires, psychometrics, and state-space mapping for comparing altered-state reports without flattening phenomenological detail.
A compact post-ASSC 2025 workshop-retreat for researchers working across altered states, virtual reality, neurophenomenology, computational phenomenology, and the formal modeling of experience. The event is designed for a small group of roughly 35 participants, with talks, demonstrations, collaborative sessions, and room for new research partnerships.
The Qualia Research Institute is a co-organizational and funding partner for the retreat, supporting the QRI track on formal state-space models, valence, and computational approaches to non-ordinary conscious experience.
Open-science methods, validated questionnaires, psychometrics, and state-space mapping for comparing altered-state reports without flattening phenomenological detail.
VR, bioresponsive systems, hallucination simulations, and immersive tools for eliciting, modeling, and studying changes in self-representation and perception.
Micro-phenomenology, contemplative practice, sound and art sessions, and first-person methods that make subjective structure part of the research process.
QRI-led work on computational phenomenology, valence, coupling dynamics, visual-state classifications, and mathematical models of non-ordinary experience.
Sessions are grouped by day so the program can be scanned quickly. Select a speaker card to expand the biography and session context.

Arrival gathering beneath the night sky, with music beginning around 19:00.
Stratos Bichakis is a transdisciplinary artist whose installations and performances use sound, light, motion, and language to transform sensory experience. For the retreat, his musical role grounds the opening in shared listening rather than formal presentation.
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Morning meditation and yoga as a daily experiential anchor.
Matthias Braeunig is an independent research scientist with a physics background, long experience in medical statistics, data science, and R programming, and decades of contemplative practice in yoga and Tibetan Buddhist meditation.
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Achievements and challenges in systematic altered-state measurement.
Timo Torsten Schmidt is a neuroscientist at Freie Universität Berlin working on experimental consciousness research, mental imagery, working memory, and altered states. He co-founded CIRCE and founded the Altered States Database to improve open reference datasets.
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Micro-phenomenology and non-ordinary states, including work from DMT research.
James W. Sanders is a psychologist, cognitive neuroscientist, and phenomenologist at Imperial College London's Centre for Psychedelic Research. His work uses micro-phenomenological interviewing to study DMT, 5-MeO-DMT, and advanced meditation.
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Subjective dissimilarity ratings as a route into bottom-up altered-state maps.
Paweł Motyka is a psychology researcher affiliated with the Institute of Psychology at the Polish Academy of Sciences. His work addresses consciousness, multisensory integration, time perception, interoception, and VR-based models of altered states.
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Psychometric, experimental, and clinical methods for altered-state research.
Vince Polito is a Senior Lecturer at Macquarie University whose research spans hypnosis, flow, meditation, yoga, chanting, VR, religious rituals, psychosis, and psychedelic microdosing. He leads large-scale psychedelic and microdosing studies in Australia.
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New directions for studying visual hallucinations using VR technology.
Keisuke Suzuki is a cognitive scientist specializing in embodied cognition, conscious presence, and VR-based studies of self-consciousness. His research links artificial life, bodily self-representation, and experimental manipulation of mental states.
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Stereoscopic, gaze-coupled, and physiology-linked variants of Hallucination Machine studies.
Motyka's work combines multisensory integration, bodily processes, and altered states. In this session he extends the measurement theme into sensory VR induction and peripheral physiology.
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Breath-based interactions with coupled oscillator dynamics in VR.
George Fejer is a PhD candidate in Cognitive Psychology at the University of Konstanz and an ALIUS coordinator. His research uses bioresponsive VR to study breathwork-induced changes in consciousness and peripersonal space.
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Possible VR-augmented treatments for chronic conditions.
Hector Taylor is a dual PhD candidate in Neuroscience and Psychology at the Psychiatric University Hospital of Zurich. His work integrates VR embodiment simulation, psychedelics, neurophenomenology, and fNIRS for chronic pain research.
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An accessible biofeedback framework for VR and visual applications.
Antoine Bellemare is an artist and postdoctoral researcher working across neuroscience, digital arts, poetry, and interactive biosignal installations. Philipp Thölke develops real-time neurotechnology and computational tools, including goofi-pipe for EEG and biofeedback prototyping.
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Approaches to modeling and presenting psychedelic visual phenomena.
Raimonds Jermaks, known as Symmetric Vision, is a multidisciplinary artist whose work merges digital art, altered-state research, live projection, and immersive visual storytelling. He is known for detailed visual replications and psychedelic cryptography experiments.
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A talk followed by a pool-based sound performance for four speakers.
Yutaka Makino is an artist and researcher based in Berlin and Fukuoka. Drawing from psychiatry, psychoacoustics, neuroscience, linguistics, and history of science, he builds performances and installations that make perceptual processes tangible.
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Ambient performance with Cretan Bulgari.
Bichakis' performance practice explores emotional and transcendent possibilities of sound and light. The retreat program uses these artistic sessions as part of its lived-experience structure, not merely as evening entertainment.
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Morning meditation and yoga.
The recurring morning format keeps contemplative practice visible inside the event structure, so discussions of non-ordinary states remain tethered to first-person methods.
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Image-based and visual state classifications as an entry into formal modeling.
Andrés Gómez Emilsson is Director of Research at the Qualia Research Institute. His work combines neuroscience, philosophy, artificial intelligence, qualia mapping, valence, psychedelic phenomenology, and topological models of consciousness.
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Computational frameworks for DMT-induced altered states.
June Russell contributes to the QRI-oriented formal modeling strand of the retreat, connecting psychedelic phenomenology with computational descriptions of altered conscious dynamics.
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Training participants to create images of stroboscopically induced hallucinations.
Trevor Hewitt is a PhD researcher at the Sussex Centre for Consciousness Science whose work connects visual phenomenology, hallucination reports, and quantitative analysis of experience.
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Interactive live coding, visuals, goofi-pipe, and audience participation.
This collaborative session brings together QRI researchers, computational artists, and neurotechnology builders. Taru Hirvonen develops mathematical models and visualizations of conscious dynamics; Till Holzapfel works at the intersection of altered states, embodiment, and immersive technology.
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An art project distorting spatial perception through custom goggles and audio manipulation.
In FOLDINGS, visitors experience ordinary surroundings through layered visual and auditory distortions. The session uses adaptation and cross-modal delay to make the construction of perception directly experientially available.
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Morning meditation and yoga.
The final Morning Glory session closes the contemplative thread of the retreat before the Sunday sequence of tulpamancy, debate, meditation, and psychedelic psychodynamics.
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The phenomenon of tulpamancy and its implications for consciousness research.
Michael Lifshitz is Assistant Professor in Social and Transcultural Psychiatry at McGill University and co-director of the Psychedelics and Contemplation Lab. His research examines how culture shapes spiritual experience and agency.
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A structured debate on tulpa consciousness and models of awareness.
Marc Antonio is an AI researcher and philosopher in Amsterdam interested in formal logic, transcendental phenomenology, mechanistic interpretability, qualia space, social space, and neurophenomenology. The panel links these questions with QRI and VR perspectives.
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A systematic account of how meditation may dismantle mechanisms that create suffering.
Vismay Agrawal is a PhD researcher at the Monash Centre for Consciousness and Contemplative Studies. His interests include mental suffering, advanced meditation, phenomenology, active inference, and contemplative practice.
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Psychodynamic frameworks for interpreting psychedelic experiences.
Tobias Buchborn holds a PhD in Neurobiology and has studied psychedelic tolerance, optogenetic voltage imaging, chemogenetics, and fiber photometry. His current work examines therapeutic mechanisms in psychedelic research.
Expand bioPartner event at Institut Jean Nicod, Paris, honoring Martin Fortier's work on anthropology, hallucinations, altered states, feelings of reality, spiritual experience, shamanism, and the diversity of consciousness.
In 2020, Martin Fortier, a doctoral student at EHESS attached to the Jean-Nicod Institute, died prematurely, on the verge of defending a thesis of nearly 600 pages. With his dual training in philosophy and anthropology, his research crossed social sciences and cognitive sciences. His published works focus on the epistemic and ontological status of hallucinations, feelings of reality and hyper-reality, spiritual experiences and shamanism, altered states of consciousness, and the diversity of consciousness. This workshop honored his memory by addressing some of his favorite themes.
Joëlle Proust discussed Martin Fortier's contribution to metacognitive diversity and the anthropological evidence he collected around social metacognition. Juan C. González examined Martin's idea that psychedelic hallucination phenomenology can be linked with neuropharmacological bases, and questioned the real/unreal divide for psychedelic experience. David Dupuis revisited debates with Martin Fortier about psychedelics, cultural transmission, and extrapharmacological factors. Raphaël Millière developed questions around multidimensional global states of consciousness. Jérôme Dokic argued that the feeling of presence is affective and has bodily, interactive, and self-presence aspects that can vary independently of sensory perception.
From Event Cognition to Self-Transformation. This legacy project page framed somatic cultures as communities where bodily practices, embodied episodes, and shared meanings shape distinctive forms of self-consciousness and social belonging.
Recent scholarly explorations of embodiment have explored the multiple ways in which cultural meaning and somatic experiences are intermingled through complex loops of influence between mind and body. The panel focused on somatic cultures: contexts where shaping, conditioning and transforming participants' bodies is pivotal for developing a distinctive sense of Self integrated into a specific community.
The legacy page described religious groups, sports practitioners, meditators, communities defined by sexual orientations, shared trauma, pathology, practices of consumption, and ascetic practices as places where transforming one's body can forge distinctive self-consciousnesses and selective socialities. The panel proposed to explore somatic enculturation by integrating anthropology, transcultural psychiatry, neurocognitive science, and biological science.
Its central distinction was between somatic events - discrete episodes marking integration into a community - and self-transformation, the broader dynamics of personal reconfiguration and re-socialization. The page retained examples including initiation, desired but unpredictable enlightenment, boxing careers, circumcision, ritual shaving, and enslavement piercings in BDSM practices. It argued for a bio-looping approach in which bottom-up bodily processes and top-down meaningful experiences co-dependently shape selves, biology, and social worlds.
Regards croisés sur les hallucinations. Journées d'études organized by David Dupuis and Mathieu Frèrejouan at École Normale Supérieure, 45 rue d'Ulm, Paris.
Partner event at the 23rd Annual Meeting of the Association for the Scientific Study of Consciousness, Western Ontario University, London, Ontario, Canada.
The legacy page argued that consciousness studies had paid too little attention to cultural variables, despite evidence that susceptibility to visual illusions, sensory integration, binocular rivalry, and the cultivation of non-ordinary states vary across cultures. It contrasted monophasic cultures, reluctant to induce contents and modes beyond ordinary consciousness, with polyphasic cultures that explore a larger repertoire of conscious states.
The old page preserved three routes by which consciousness can be encultured: ordinary conscious processes shaped by ordinary practices; cultures using non-ordinary techniques such as hallucinogens, fasting, or sleep deprivation; and culture-dependent forms within techniques for altering consciousness such as trance. The talks connected neuroimaging of emotion, tulpamancy, spirit possession, dissociation, and altered states.
Partner event at the Italian Embassy in Paris, retained from the old Events list as a program PDF for the Tiziana Zalla tribute.
Methodological Issues in Consciousness Research at École Normale Supérieure. Organized by David Dupuis, Matthieu Koroma, and Raphaël Millière.
The old page framed ALIUS as an interdisciplinary research group investigating non-ordinary and understudied conscious states, connecting anthropology, neuroscience, psychology, philosophy of mind, and psychiatry. The workshop asked which methodological approaches allow fruitful dialogue between disciplines in the investigation of consciousness.
Exploring the diversity of consciousness at École Normale Supérieure. Organized by Martin Fortier, Maddalena Canna, David Dupuis, and Matthieu Koroma.
The legacy page also retained a participant list with affiliations from Université de Lille, EHESS, Institut Jean Nicod, Institut Pasteur, Durham University, ENS, Imperial College London, University of Amsterdam, and related laboratories.
Images Visionnaires: a study day at Collège de France on visual hallucinations, visionary art, anthropology, and neuropharmacology.
Partner event at the University of Oxford on selfhood, conscious experience, and altered states, retained with the external legacy event site.
Neuroscientific and socio-cultural approaches to hallucinogenic experiences at Stanford University, organized by Martin Fortier.