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Çağatay Demirel

6 papers in the library · 73 citations · publishing 2021-2026

Papers

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Facilitating unusual bodily experiences and out-of-body experiences across wakefulness and sleep: A high-density EEG and neurophenomenology study

Consciousness and Cognition February 11, 2026 Teresa Campillo-Ferrer, Antonella Iadarola, Ramona Cordani et al.

Unusual bodily experiences (UBEs) are illusory bodily perceptions that are not coherent with typical wakeful experiences, including flying or floating sensations, body distortions, and out-of-body experiences. This study examines UBEs in a controlled sleep laboratory using meditation and light stimulation to facilitate their occurrence. A total of N = 35 healthy participants underwent...

A dream EEG and mentation database.

Nature Communications August 13, 2025 William Wong, Rubén Herzog, Kátia Cristine Andrade et al. 10 citations

Magneto/electroencephalography (M/EEG) studies of dreaming are an essential paradigm in the investigation of neurocognitive processes of human consciousness during sleep, but they are limited by the number of observations that can be collected per study. Dream research also involves substantial methodological and conceptual variability, which poses problems for the integration of results. To...

Electrophysiological Correlates of Lucid Dreaming: Sensor and Source Level Signatures.

Journal of Neuroscience May 14, 2025 Çağatay Demirel, Jarrod Gott, Kristoffer Appel et al. 8 citations

Lucid dreaming (LD) is a state of conscious awareness of the ongoing oneiric state, predominantly linked to REM sleep. Progress in understanding its neurobiological basis has been hindered by small sample sizes, diverse EEG setups, and artifacts like saccadic eye movements. To address these challenges in characterizing the electrophysiological correlates of LD, we introduced an adaptive...

Inducing unusual bodily sensations and out-of-body experiences across the wake-sleep cycle: a high-density EEG and neurophenomenology study

PsyArXiv April 13, 2025 Teresa Campillo-Ferrer, Antonella Iadarola, Ramona Cordani et al. 1 citation preprint

Unusual bodily experiences (UBEs) are illusory perceptions involving the body and its surroundings, such as body distortions and out-of-body experiences. This study examines UBEs in a controlled sleep laboratory using meditation and light stimulation to facilitate their occurrence. A total of N=35 healthy participants underwent high-density EEG with additional EMG, EOG, and ECG recordings....

DREAM: A Dream EEG and Mentation database

May 16, 2023 William Wong, Kátia C. Andrade, Thomas Andrillon et al. 21 citations preprint

Magneto/electroencephalography (M/EEG) studies of dreaming are an essential paradigm in the investigation of neurocognitive processes of human consciousness during sleep, but they are limited by the number of observations that can be collected per study. Dream research also involves substantial methodological and conceptual variability, which poses problems for the integration of results. To...

DOI: 10.31234/osf.io/69e43 (opens in new tab) Full text (opens in new tab) Dream Electroencephalography Neurocognitive Sleep system call +6

Virtual reality training of lucid dreaming.

Philosophical transactions of the Royal Society of London. Series B, Biological sciences February 1, 2021 Jarrod Gott, Leonore Bovy, Emma Peters et al. 33 citations

Metacognitive reflections on one's current state of mind are largely absent during dreaming. Lucid dreaming as the exception to this rule is a rare phenomenon; however, its occurrence can be facilitated through cognitive training. A central idea of respective training strategies is to regularly question one's phenomenal experience: is the currently experienced world real, or just a dream? Here,...