Journal of Psychopharmacology
December 17, 2022
Miriam Marguilho, Inês Figueiredo, Pedro Castro-Rodrigues
57 citations
Ketamine is an N-methyl-d-aspartate antagonist which is increasingly being researched and used as a treatment for depression. In low doses, it can cause a transitory modification in consciousness which was classically labelled as ‘dissociation’. However, ketamine is also commonly classified as an atypical psychedelic and it has been recently reported that ego dissolution experiences during...
Scientific Reports
December 8, 2022
Paweł Krukow, Kamil Jonak
When performing cognitively demanding tasks, people tend to experience momentary distractions or personal associations that intercept their stream of consciousness. This phenomenon is known as Mind Wandering (MW) and it has become a subject of neuroscientific investigations. Off-task thoughts can be analyzed during task performance, but currently, MW is also understood as a dimension of...
Nature Communications
November 29, 2022
Sharif I Kronemer, Mark Aksen, Julia Z. Ding et al.
96 citations
The full neural circuits of conscious perception remain unknown. Using a visual perception task, we directly recorded a subcortical thalamic awareness potential (TAP). We also developed a unique paradigm to classify perceived versus not perceived stimuli using eye measurements to remove confounding signals related to reporting on conscious experiences. Using fMRI, we discovered three major...
Neuroimage
November 9, 2022
Jeehye Seo, Dae-Jin Kim, Sang‐Han Choi et al.
22 citations
Although conscious perception is a fundamental cognitive function, its neural correlates remain unclear. It remains debatable whether thalamocortical interactions play a decisive role in conscious perception. To clarify this, we used functional magnetic resonance imaging (fMRI) where flickering red and green visual cues could be perceived either as a non-fused colour or fused colour. Here we...
Diagnostics (Basel, Switzerland)
November 7, 2022
Camilo Sánchez, Marcin Moskalewicz
4 citations
This paper proposes a phenomenological hypothesis that psychosis entails a disturbance of the two-fold process of the indication function of kinesthesia and the presentification function of touch that affects the constitution of bodily subjectivity. Recent functional connectivity studies showed that the increased synchrony between the right anterior insula and the default mode network are...
Research Square
November 1, 2022
Hoda Taghilou, Mazaher Rezaei, Mohammad Ali Nazari et al.
preprint
Abstract Background Most electrophysiological studies in hypnosis have divided individuals into two groups with high and low hypnotizability. However, this classification has been subjected to considerable criticism. The most important of these criticisms is that highly hypnotizable individuals can be divided into different groups due to their heterogeneity. Methods We selected 20 people with a...
Frontiers in Behavioral Neuroscience
October 17, 2022
Bruno J. Weder
34 citations
Background: Mindfulness affects human levels of experience by facilitating the immediate and impartial perception of phenomena, including sensory stimulation, emotions, and thoughts. Mindfulness is now a focus of neuroimaging, since technical and methodological developments in magnetic resonance imaging have made it possible to observe subjects performing mindfulness tasks. Objective: We set...
Neuroimage
October 15, 2022
Andrew Gaddis, Daniel E. Lidstone, Mary Beth Nebel et al.
38 citations
Classic psychedelics, such as psilocybin and LSD, and other serotonin 2A receptor (5-HT2AR) agonists evoke acute alterations in perception and cognition. Altered thalamocortical connectivity has been hypothesized to underlie these effects, which is supported by some functional MRI (fMRI) studies. These studies have treated the thalamus as a unitary structure, despite known differential 5-HT2AR...
Science Advances
October 14, 2022
Eric L Garland, Adam W. Hanley, Justin Hudak et al.
39 citations
Self-regulation is instantiated by theta oscillations (4 to 8 Hz) in neurons of frontal midline brain regions. Frontal midline theta (FMΘ) is inversely associated with default mode network (DMN) activation, which subserves self-referential processing. Addiction involves impaired self-regulation and DMN dysfunction. Mindfulness is an efficacious self-regulatory practice for treating addiction,...
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...