Frontiers in Human Neuroscience
July 22, 2026
Carla Pallavicini, Lorena Llobenes, Federico Cavanna et al.
Psilocybin is a classic psychedelic known to alter subjective experience and induce lasting psychological changes, including increased cognitive flexibility and reduced rigid self-related beliefs. Contextual factors, including preparatory mental states, are thought to play a key role in shaping these effects. Compassion imagery, which engages care-affiliative motivational systems, may represent...
bioRxiv Preprint Server
April 22, 2026
Nicolás Bruno, Federico Cavanna, Federico Zamberlán et al.
preprint
Spontaneous thoughts constitute most of everyday inner experience, yet long-standing methodological challenges obscure a thorough exploration of their content and neurophysiological underpinnings. Traditional approaches relying on thought probes impose strict constraints on phenomenological reports, whereas online verbal reports disrupt the natural flow of experience while interfering neural...
Psychopharmacology
September 1, 2022
Camila Sanz, Federico Cavanna, Stephanie Müller et al.
1 citation
Serotonergic psychedelics are being studied as novel treatments for mental health disorders and as facilitators of improved well-being, mental function, and creativity. Recent studies have found mixed results concerning the effects of low doses of psychedelics ("microdosing") on these domains. However, microdosing is generally investigated using instruments designed to assess larger doses of...
Translational Psychiatry
August 2, 2022
Federico Cavanna, Stephanie Müller, Laura Alethia de la Fuente et al.
130 citations
Abstract The use of low sub-perceptual doses of psychedelics (“microdosing”) has gained popularity in recent years. Although anecdotal reports claim multiple benefits associated with this practice, the lack of placebo-controlled studies severely limits our knowledge of microdosing and its effects. Moreover, research conducted in standard laboratory settings could fail to capture the motivation...
bioRxiv (Cold Spring Harbor Laboratory)
December 7, 2021
Federico Cavanna, Stephanie Müller, Laura Alethia de la Fuente et al.
8 citations
preprint
Abstract The use of low sub-hallucinogenic doses of psychedelics (“microdosing”) has gained popularity in recent years. Although anecdotal reports claim multiple benefits associated with this practice, the lack of placebo-controlled studies limits our knowledge of microdosing and its effects. Moreover, research conducted in laboratory settings might fail to capture the motivation of individuals...
Frontiers in Psychiatry
November 5, 2021
Enzo Tagliazucchi, Federico Zamberlán, Federico Cavanna et al.
23 citations
N,N-Dimethyltryptamine (DMT) is a classic psychedelic capable of inducing short-lasting but profound changes in consciousness. As with other psychedelics, the experience induced by DMT strongly depends upon contextual factors, yet the neurobiological determinants of this variability remain unknown. The present study investigated changes in neural oscillations elicited by inhaled DMT, and...
bioRxiv Preprint Server
September 2, 2021
Laura De la Fuente, Federico Zamberlán, Hernan Bocaccio et al.
preprint
Even though the fundamental laws of physics are the same when the direction of time is inverted, dissipative systems evolve in the preferred temporal direction indicated by the thermodynamic arrow of time. The fundamental nature of this temporal asymmetry led us to hypothesize its presence in the neural activity evoked by conscious perception of the physical world, and thus its covariance with...
bioRxiv Preprint Server
March 11, 2021
Enzo Tagliazucchi, Federico Zamberlán, Federico Cavanna et al.
3 citations
preprint
N,N-Dimethyltryptamine (DMT) is a classic psychedelic capable of inducing short-lasting but profound changes in consciousness. As with other psychedelics, the experience induced by DMT strongly depends upon contextual factors, yet the neurobiological determinants of this variability remain unknown. We combined wireless electroencephalography and source imaging to map changes in neural...
J Psychopharmacol
February 10, 2021
Carla Pallavicini, Federico Cavanna, Federico Zamberlán et al.
73 citations
BACKGROUND: N,N-dimethyltryptamine is a short-acting psychedelic tryptamine found naturally in many plants and animals. Few studies to date have addressed the neural and psychological effects of N,N-dimethyltryptamine alone, either administered intravenously or inhaled in freebase form, and none have been conducted in natural settings. AIMS: Our primary aim was to study the acute effects of...
Conscious Cogn
December 8, 2020
Camila Sanz, Carla Pallavicini, Facundo Carrillo et al.
34 citations
Serotonergic psychedelics have been suggested to mirror certain aspects of psychosis, and, more generally, elicit a state of consciousness underpinned by increased entropy of on-going neural activity. We investigated the hypothesis that language produced under the effects of lysergic acid diethylamide (LSD) should exhibit increased entropy and reduced semantic coherence. Computational analysis...
bioRxiv (Cold Spring Harbor Laboratory)
August 20, 2020
Carla Pallavicini, Federico Cavanna, Federico Zamberlán et al.
17 citations
preprint
Abstract Background N,N-Dimethyltryptamine (DMT) is a short acting psychedelic tryptamine found naturally in many plants and animals. Few studies to date addressed the neural and psychological effects of DMT alone, either administered intravenously or inhaled in freebase form, and none conducted in natural settings. Aims Our primary aim was to study the acute effects of inhaled DMT in natural...
Journal of Cannabis Research
July 17, 2020
Laura Alethia de la Fuente, Federico Zamberlán, Andrés Sánchez Ferrán et al.
30 citations
BACKGROUND: Widespread commercialization of cannabis has led to the introduction of brand names based on users' subjective experience of psychological effects and flavors, but this process has occurred in the absence of agreed standards. The objective of this work was to leverage information extracted from large databases to evaluate the consistency and validity of these subjective reports, and...
Neuroscience
February 4, 2020
Rocío Martínez Vivot, Carla Pallavicini, Federico Zamberlán et al.
116 citations
We address the hypothesis that the entropy of neural dynamics indexes the intensity and quality of conscious content. Previous work established that serotonergic psychedelics can have a dysregulating effect on brain activity, leading to subjective effects that present a considerable overlap with the phenomenology of certain meditative states. Here we propose that the prolonged practice of...
bioRxiv (Cold Spring Harbor Laboratory)
September 8, 2019
Laura Alethia de la Fuente, Federico Zamberlán, Andrés Sánchez Ferrán et al.
1 citation
preprint
Abstract Background Commercially available cannabis strains have multiplied in recent years as a consequence of regional changes in legislation for medicinal and recreational use. Lack of a standardized system to label plants and seeds hinders the consistent identification of particular strains with their elicited psychoactive effects. The objective of this work was to leverage information...
Neuroimage
June 24, 2019
Carla Pallavicini, Martina G. Vilas, Mirta Villarreal et al.
66 citations
Classic serotonergic psychedelics are remarkable for their capacity to induce reversible alterations in consciousness of the self and the surroundings, mediated by agonism at serotonin 5-HT2A receptors. The subjective effects elicited by dissociative drugs acting as N-methyl-D-aspartate (NMDA) antagonists (e.g. ketamine and phencyclidine) overlap in certain domains with those of serotonergic...
Consciousness and Cognition
March 1, 2019
Charlotte Martial, Héléna Cassol, Vanessa Charland-Verville et al.
98 citations
The real or perceived proximity to death often results in a non-ordinary state of consciousness characterized by phenomenological features such as the perception of leaving the body boundaries, feelings of peace, bliss and timelessness, life review, the sensation of traveling through a tunnel and an irreversible threshold. Near-death experiences (NDEs) are comparable among individuals of...
Frontiers in Integrative Neuroscience
November 1, 2018
Camila Sanz, Carla Pallavicini, Carla Pallavicini et al.
78 citations
Classic psychedelics are substances of paramount cultural and neuroscientific importance. A distinctive feature of psychedelic drugs is the wide range of potential subjective effects they can elicit, known to be deeply influenced by the internal state of the user (“set”) and the surroundings (“setting”). The observation of cross-tolerance and a series of empirical studies in humans and animal...
Frontiers in Neuroscience
January 22, 2018
Camila Sanz, Federico Zamberlán, Earth Erowid et al.
112 citations
Ever since the modern rediscovery of psychedelic substances by Western society, several authors have independently proposed that their effects bear a high resemblance to the dreams and dreamlike experiences occurring naturally during the sleep-wake cycle. Recent studies in humans have provided neurophysiological evidence supporting this hypothesis. However, a rigorous comparative analysis of...
Frontiers in Neuroscience
2018
Camila Sanz, Federico Zamberlán, Earth Erowid et al.
3 citations
correction
CORRECTION article Front. Neurosci., 11 April 2018Sec. Neuropharmacology Volume 12 - 2018 | https://doi.org/10.3389/fnins.2018.00229