Neuroscience & Biobehavioral Reviews
November 1, 2023
Sophia Linguiti, Jacob W Vogel, Valerie J Sydnor et al.
15 citations
Functional magnetic resonance imaging (fMRI) is increasingly used to non-invasively study the acute impact of psychedelics on the human brain. While fMRI is a promising tool for measuring brain function in response to psychedelics, it also has known methodological challenges. We conducted a systematic review of fMRI studies examining acute responses to experimentally administered psychedelics...
Neuroscience & Biobehavioral Reviews
November 1, 2023
Peter Fazekas, Axel Cleeremans, Morten Overgaard
We propose a new approach to consciousness science that instead of comparing complex theoretical positions deconstructs existing theories, takes their central assumptions while disregarding their auxiliary hypotheses, and focuses its investigations on the main constructs that these central assumptions rely on (like global workspace, recurrent processing, metarepresentation). Studying how these...
Neuroscience & Biobehavioral Reviews
October 1, 2023
Omer A. Syed, Benjamin Tsang, Robert Gerlai
7 citations
In this review, we discuss the possible utility of zebrafish in research on psilocybin, a psychedelic drug whose recreational use as well as possible clinical application are gaining increasing interest. First, we review behavioral tests with zebrafish, focussing on anxiety and social behavior, which have particular relevance in the context of psilocybin research. Next, we briefly consider...
Neuroscience & Biobehavioral Reviews
October 1, 2023
Ruben Laukkonen, Margaret Webb, Carola Salvi et al.
Perhaps it is no accident that insight moments accompany some of humanity's most important discoveries in science, medicine, and art. Here we propose that feelings of insight play a central role in (heuristically) selecting an idea from the stream of consciousness by capturing attention and eliciting a sense of intuitive confidence permitting fast action under uncertainty. The mechanisms...
Neuroscience & Biobehavioral Reviews
September 1, 2023
Carla Soares, Gerardo Gonzalo, João Castelhano et al.
The Default Mode Network (DMN) and the Theory of Mind (ToM) networks play a crucial role in our understanding of the neurocognition of the self. The DMN is commonly associated with introspection, while the ToM is involved in perspective-taking. There is no research investigating the overlap between the DMN and ToM in relation to causal effects such as induced by psychedelics, and their precise...
Neuroscience & Biobehavioral Reviews
August 2023
Antonio I Triggiani, Gabriel Kreiman, Cara C Lewis et al.
In 1983 Benjamin Libet and colleagues published a paper apparently challenging the view that the conscious intention to move precedes the brain's preparation for movement. The experiment initiated debates about the nature of intention, the neurophysiology of movement, and philosophical and legal understanding of free will and moral responsibility. Here we review the concept of "conscious...
Neuroscience & Biobehavioral Reviews
July 1, 2023
Daniel Collerton, James Barnes, Nico J Diederich et al.
80 citations
Despite decades of research, we do not definitively know how people sometimes see things that are not there. Eight models of complex visual hallucinations have been published since 2000, including Deafferentation, Reality Monitoring, Perception and Attention Deficit, Activation, Input, and Modulation, Hodological, Attentional Networks, Active Inference, and Thalamocortical Dysrhythmia Default...
Neuroscience & Biobehavioral Reviews
July 1, 2023
Manoj K. Doss, Harriet de Wit, David A Gallo
30 citations
Psychoactive drugs modulate learning and emotional processes in ways that could impact their recreational and medical use. Recent work has revealed how drugs impact different stages of processing emotional episodic memories, specifically encoding (forming memories), consolidation (stabilizing memories), and retrieval (accessing memories). Drugs administered before encoding may preferentially...
Neuroscience & Biobehavioral Reviews
May 1, 2023
Lisa Raoul, Marie-Hélène Grosbras
15 citations
How we mentally experience our body has been studied in a variety research domains. Each of these domains focuses in its own ways on different aspects of the body, namely the neurophysiological, perceptual, affective or social components, and proposes different conceptual taxonomies. It is therefore difficult to find one's way through this vast literature and to grasp the relationships between...
Neuroscience & Biobehavioral Reviews
May 1, 2023
Georg Northoff, Andrea Scalabrini, Stuart Fogel
13 citations
Dreams are one of the most bizarre and least understood states of consciousness. Bridging the gap between brain and phenomenology of (un)conscious experience, we propose the Topographic-dynamic Re-organization model of Dreams (TRoD). Topographically, dreams are characterized by a shift towards increased activity and connectivity in the default-mode network (DMN) while they are reduced in the...
Neuroscience & Biobehavioral Reviews
April 29, 2023
Riccardo Stefanelli
11 citations
Disorders of consciousness represent an efficient way to test theories of consciousness' (ToCs) predictions. So far, ToCs have mostly focused on disorders of quantitative awareness such as coma, vegetative state, spatial neglect and hemianopia. Psychiatric disorders, by contrast, have received little attention, leaving their contribution to consciousness research almost unexplored. Therefore,...
Neuroscience & Biobehavioral Reviews
April 1, 2023
Péter Simor, Philippe Peigneux, Róbert Bódizs
Dreams are often viewed as fascinating but irrelevant mental epihenomena of the sleeping mind with questionable functional relevance. Despite long hours of oneiric activity, and high individual differences in dream recall, dreams are lost into oblivion. Here, we conceptualize dreaming and dream amnesia as inherent aspects of the reactive and predictive homeostatic functions of sleep. Mental...
Neuroscience & Biobehavioral Reviews
January 13, 2023
Megan Pedicini, Zachary A. Cordner
13 citations
Interest in the therapeutic potential of psilocybin across a broad range of neuropsychiatric disorders is rapidly expanding. Despite promising clinical data and tremendous public enthusiasm, complimentary basic and translational studies - which are critical for advancing our understanding of psilocybin's biological effects and promoting innovation - have been relatively few. As with all work...
Neuroscience & Biobehavioral Reviews
December 1, 2022
Steven Kotler, Michael Mannino, Scott Kelso et al.
44 citations
Flow is a cognitive state that manifests when there is complete attentional absorption while performing a task. Flow occurs when certain internal as well as external conditions are present, including intense concentration, a sense of control, feedback, and a balance between the challenge of the task and the relevant skillset. Phenomenologically, flow is accompanied by a loss of...
Neuroscience & Biobehavioral Reviews
December 2022
Andrea J Narayan, Luke A. Downey, Brooke Manning et al.
Cannabidiol's (CBD) safety profile and broad action has made it a popular treatment option for anxiety and co-occurring sleep disturbance. However, its efficacy in healthy and clinical populations, treatment duration, formulation and doses for optimal therapeutic benefits remains unclear. Selected databases were examined from inception to October 2022. Study selection, data extraction and...
Neuroscience & Biobehavioral Reviews
November 1, 2022
Megan A. K. Peters
Science and philosophy have long struggled with how to even begin studying the neural or computational basis of qualitative experience. Here I review psychological, neuroscience, and philosophical literature to reveal how perceptual metacognition possesses five unique properties that provide a powerful opportunity for studying the neural and computational correlates of subjective experience:...
Neuroscience & Biobehavioral Reviews
November 2022
R Guglielmo, G Hasler
The monoamine hypothesis has dominated research on the pathophysiology of mood disorders as well as the development of therapeutic drugs by over half a century. Nowadays a change of perspective is taking place. The glutamate system is increasingly implicated in the pathophysiology of mood disorders. The evidence spans from animal, post-mortem, imaging, pharmacological and genome-wide...
Neuroscience & Biobehavioral Reviews
October 2022
Camilo Miguel Signorelli, Joaquin Diaz Boils, Enzo Tagliazucchi et al.
In this review, we discuss empirical results inspiring the introduction of a formal mathematical multilayer model for the biological neuroscience of conscious experience. First, we motivate the discussion through evidence regarding the dynamic brain. Second, we review different brain-body couplings associated with conscious experience and its potential role in driving brain dynamics. Third, we...
Neuroscience & Biobehavioral Reviews
October 1, 2022
Saampras Ganesan, Emillie Beyer, Bradford A. Moffat et al.
Meditation trains the mind to focus attention towards an object or experience. Among different meditation techniques, focused attention meditation is considered foundational for more advanced practices. Despite renewed interest in its functional neural correlates, there is no unified neurocognitive model of focused attention meditation developed via quantitative synthesis of contemporary...
Neuroscience & Biobehavioral Reviews
September 1, 2022
Michiel van Elk, David Bryce Yaden
214 citations
This paper provides a critical review of several possible mechanisms at different levels of analysis underlying the effects and therapeutic potential of psychedelics. At the (1) biochemical level, psychedelics primarily affect the 5-HT2A receptor, increase neuroplasticity, offer a critical period for social reward learning, and have anti-inflammatory properties. At the (2) neural level,...
Neuroscience & Biobehavioral Reviews
September 1, 2022
Jeremy I Skipper
Most research on the neurobiology of language ignores consciousness and vice versa. Here, language, with an emphasis on inner speech, is hypothesised to generate and sustain self-awareness, i.e., higher-order consciousness. Converging evidence supporting this hypothesis is reviewed. To account for these findings, a 'HOLISTIC' model of neurobiology of language, inner speech, and consciousness is...
Neuroscience & Biobehavioral Reviews
July 1, 2022
Drummond E-Wen Mcculloch, Gitte Moos Knudsen, Frederick Streeter Barrett et al.
14 citations
Clinical research into serotonergic psychedelics is expanding rapidly, showing promising efficacy across myriad disorders. Resting-state functional magnetic resonance imaging (rs-fMRI) is a commonly used strategy to identify psychedelic-induced changes in neural pathways in clinical and healthy populations. Here we, a large group of psychedelic imaging researchers, review the 42 research...
Neuroscience & Biobehavioral Reviews
June 6, 2022
Corinna L. Felsch, Kim P. C. Kuypers
23 citations
BACKGROUND: Current first-line treatment for social anxiety disorder (SAD), one of the most prevalent anxiety disorders, is limited in its efficacy. Hence, novel treatment approaches are urgently needed. The current review suggests a combination of meditation-based interventions and the administration of a psychedelic as a future alternative treatment approach. While both separate treatments...
Neuroscience & Biobehavioral Reviews
June 1, 2022
Xingming Wang, Jianjun Yang, Kenji Hashimoto
Neurological disorders are the leading cause of disability and the second leading cause of death worldwide. The increasing social and economic burdens of neurological disorders are driven by global population growth and aging. Depression is a common psychiatric symptom in numerous neurological disorders. It is also a risk factor for Alzheimer's disease (AD) and other dementias, Parkinson's...
Neuroscience & Biobehavioral Reviews
May 25, 2022
Maurizio Gorgoni, Serena Scarpelli, Valentina Alfonsi et al.
According to several influential models, dreams can be affected by state- and trait-like factors, sleep features, and diurnal experiences. The COVID-19 pandemic globally affected daily habits, emotional experiences, and sleep. Previous studies suggested an influence of collective traumatic events on dreaming. Starting from these premises, several studies assessed the effect of the pandemic on...