EEG Functional Connectivity and Phenomenology of Induced Dissociative States

Study of Candidate Number 121060, University of Sussex
pict and abstract taken from the paper of the study. 
We thank Dr. David Schwartzman & team who researched 2015 using the meditation lamp Lucia N°03.


Dissociative phenomena are highly subjective states, disorders of consciousness with no clear organic cause and in many cases, few behavioural signs.

This study aimed to identify an EEG signature for dissociative states, and for 4 sub-factors related to dissociative and altered consciousness type experiences.

Resting alpha frequency-matched photic stimulation was used to successfully induce a temporary dissociative state in 23 healthy volunteers. Phenomenological reports were taken using a range of scales and results were clustered into 4 groups of phenomena (detachment, somatosensory changes, mystical/religious experience, visual hallucination). Differences in functional connectivity and network efficiency were identified for each of these groups.

Participants reported higher levels of dissociation and anomalous experience under alpha-matched photic stimulation.

There were significant differences in both connectivity and power in the induced dissociative state.

There were also notable differences in regional connectivity within clusters of sub-phenomena related to detachment and mystical experience.

Paper Dr. David Schwartzman University of Sussex EEG ...

Dr. David Schwartzman profile University of Sussex

We are especially grateful to Prof. Ralph Buchner

of the University of Applied Sciences Munich for Design & his students for the scientific work and the paper.
Study »INTO THE LIGHT, Creativity through Psychedelic Light Travel«


" ...Creativity research shows, that with the help of extraordinary states of consciousness one can leave old thought patterns and be open to a new approach. ...

... Even after the first sessions new creative solutions through light experience seemed possible: »After the session, in only a few minutes I drew three pages of character-sketches.« a character design-student said. An industrial-design student discovered that he was able to see the topics he was working on from a different perspective. And an illustration-student remarked: »I was free for something new, had a creative boost, and was drawing the entire afternoon after the Lucia session.« ...

... As part of a project seminar in the working field »Research and Experiment« at the School of Design, students investigated through individual design projects in fields of illustration, photography, character design, environmental design, and transportation design possibilities with inspiration from the light experience with Lucia Nº03. ...

... Additionally, an attempt was made to make the inner visual psychedelic experience digitally or analogically visible. ...

... To capture the influence more closely of the neurostimulator Lucia N°03 ...

Study Into the light Ralph Buchner University of applied science Munich 2015

News research Ralph Buchner University of applied science Munich

ASSC22 conference Krakow 2018.

EEG Signal Diversity Increases during Stroboscopic-Induced Altered State of Consciousness.

Presenting Author: David Schwartzman,
at Association for the Scientific study of Consciousness 22 conference Krakow 2018


David J. Schwartzman|Sackler Centre for Consciousness Science, University of Sussex, Brighton BN1 9QJ, United Kingdom.
Michael Schartner|Département des Neurosciences Fondamentales, Université de Genève, 1206 Genève.

Benjamin B. Ador| Master BioSciences, Département de Biologie, Ecole Normale Supérieure de Lyon, Lyon, France,
Acer Y.-C. Chang|Department of Neuroinformatics, Araya Brain Imaging, Tokyo, Japan.
Francesca Simonelli|Sackler Centre for Consciousness Science, University of Sussex, Brighton BN1 9QJ, United Kingdom.
Anil K. Seth|Sackler Centre for Consciousness Science, University of Sussex, Brighton BN1 9QJ, United Kingdom.

Abstract: What are the global neuronal signatures of altered states of consciousness (ASC)? ....

Abstract: What are the global neuronal signatures of altered states of consciousness (ASC)? Recently, increases in neural signal diversity, above those found in wakeful rest, have been reported during the psychedelic state (Schartner et al., 2017, Scientific Reports). These observations raise the possibility that increases in neuronal signal diversity, usually associated with alterations in level of consciousness, in this case reflects the rich phenomenal content associated with psychedelic ASC. To explore this question further and test if the previously found pharmacologically-induced increases in signal diversity were due to drug-specific changes in neural dynamics as opposed to changes in phenomenal content, we used stroboscopic stimulation to induce non-pharmacological ASC while measuring the diversity of EEG signals across distinct phenomenal states. Characterising the effects of stroboscopic stimulation, we found increases in the intensity and range of subjective experiences reported during stimulation across multiple phenomenological dimensions, which were similar to the changes in experience and phenomenal content found during psilocybin induced ASC (Muthukumaraswamy et al., 2013, J Neurosci). Crucially, we found that 3Hz and 10Hz stroboscopic stimulation were associated with signal diversity scores that exceeded those associated with wakeful rest, a similar pattern of results to the psychedelic state (Schartner et al., 2017). These findings provide further support for the hypothesis that increased neuronal signal diversity reflects increases in the range of phenomenal content associated with some ASC.

Poster for ASSC22 conference

Dr. David Schwartzman profile University of Sussex

ASSC Association for the Scientific Study of Consciousness

Photo & text by David Schwartzman

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