Skip to content

Default mode network: all studies

Page 75 of 155: studies 741 to 750 of 1,549, newest first. Back to the default mode network overview

Research

Mindfulness-based real-time fMRI neurofeedback: a randomized controlled trial to optimize dosing for depressed adolescents.

BMC Psychiatry October 17, 2023 Paul A Bloom, David Pagliaccio, Jiahe Zhang et al. 17 citations

Adolescence is characterized by a heightened vulnerability for Major Depressive Disorder (MDD) onset, and currently, treatments are only effective for roughly half of adolescents with MDD. Accordingly, novel interventions are urgently needed. This study aims to establish mindfulness-based real-time fMRI neurofeedback (mbNF) as a non-invasive approach to downregulate the default mode network...

Meditation attenuates default-mode activity: A pilot study using ultra-high field 7 Tesla MRI.

Brain Research Bulletin October 15, 2023 Saampras Ganesan, Bradford A. Moffat, Nicholas T. van Dam et al. 13 citations

Mapping the neurobiology of meditation has been bolstered by functional MRI (fMRI) research, with advancements in ultra-high field 7 Tesla fMRI further enhancing signal quality and neuroanatomical resolution. Here, we utilize 7 Tesla fMRI to examine the neural substrates of meditation and replicate existing widespread findings, after accounting for relevant physiological confounds. In this...

Acute effects of Δ9-tetrahydrocannabinol (THC) on resting state connectivity networks and impact of COMT genotype: A multi-site pharmacological fMRI study

Drug and Alcohol Dependence August 11, 2023 Teuntje A. D. Pelgrim, Johannes G. Ramaekers, Matthew B. Wall et al. 3 citations

BACKGROUND: Cannabis produces various acute psychotropic effects, with marked individual differences. Cannabis use is a risk factor for developing psychotic disorders. The main component responsible for these effects is Δ9-tetrahydrocannabinol (THC). Here we investigated the neural basis of acute THC effects and its modulation by catechol-methyl-transferase (COMT) Val158Met genotype. METHODS:...

Psilocybin's Emerging Role in Combating Depressive Disorder

Journal of Education, Health and Sport August 8, 2023 Anna Jaremek, Joanna Kępa, Norbert Kandefer et al.

In this review paper, we delve into the potential applicability of psilocybin - a naturally synthesized psychedelic substance found within select species of fungi, as a prospective avenue for depression treatment. Depression, a widespread psychological malady affecting countless individuals across the globe, often proves stubborn against existing treatment modalities, necessitating exploration...

Electrophysiological correlates of dispositional mindfulness: A quantitative and complexity EEG study.

British Journal of Psychology August 1, 2023 Nuria Victoria Aguerre, Carlos Javier Gómez-Ariza, Antonio José Ibáñez-Molina et al.

While growing evidence supports that dispositional mindfulness relates to psychological health and cognitive enhancement, to date there have been only a few attempts to characterize its neural underpinnings. In the present study, we aimed at exploring the electrophysiological (EEG) signature of dispositional mindfulness using quantitative and complexity measures of EEG during resting state and...

Associations between regular cannabis use and brain resting-state functional connectivity in adolescents and adults

Journal of Psychopharmacology July 29, 2023 Natalie Ertl, Will Lawn, Claire Mokrysz et al. 17 citations

BACKGROUND/AIM: Cannabis use is highly prevalent in adolescents; however, little is known about its effects on adolescent brain function. METHOD: = 70, 35 adolescents/35 adults). Pre-registered analyses examined the connectivity of seven major cortical and sub-cortical brain networks (default mode network, executive control network (ECN), salience network, hippocampal network and three striatal...

Comparing Neural Correlates of Consciousness: From Psychedelics to Hypnosis and Meditation

Biological Psychiatry: Cognitive Neuroscience and Neuroimaging July 17, 2023 Flora Moujaes, Nathalie M. Rieser, Christophe Phillips et al. 19 citations

BACKGROUND: Pharmacological and nonpharmacological methods of inducing altered states of consciousness (ASCs) are becoming increasingly relevant in the treatment of psychiatric disorders. While comparisons between them are often drawn, to date no study has directly compared their neural correlates. METHODS: To address this knowledge gap, we directly compared 2 pharmacological methods...

Associations of thalamocortical networks with reduced mindfulness in alcohol use disorder.

Frontiers in Psychiatry July 6, 2023 Niklaus Denier, Leila M. Soravia, Franz Moggi et al.

Background: Increased mindfulness is associated with reduced alcohol consumption in patients with alcohol use disorder (AUD) after residential treatment. However, the underlying neurobiological mechanism of mindfulness in AUD is unclear. Therefore, we investigate the structural and functional alterations of the thalamocortical system with a focus on the mediodorsal thalamic nucleus (MD-TN), the...

High Theta–Low Alpha Modulation of Brain Electric Activity During Eyes-Open Brahma Kumaris Rajyoga Meditation

Mindfulness July 1, 2023 Kanishka Sharma, Peter Achermann, Bhawna Panwar et al. 12 citations

Objectives The objective was to analyze EEG recorded during Brahma Kumaris Rajyoga meditation (BKRYM) using eLORETA applied in the frequency domain for localizing sources during meditation vis-à-vis baseline condition. Unlike many other popular meditation practices, BKRYM is practiced with open eyes. To our knowledge, there has been no study of the changes in the brain’s activity during the...

Time-resolved network control analysis links reduced control energy under DMT with the serotonin 2a receptor, signal diversity, and subjective experience

bioRxiv (Cold Spring Harbor Laboratory) May 12, 2023 S. Parker Singleton, Christopher Timmermann, Andrea I. Luppi et al. 18 citations preprint

Psychedelics offer a profound window into the functioning of the human brain and mind through their robust acute effects on perception, subjective experience, and brain activity patterns. In recent work using a receptor-informed network control theory framework, we demonstrated that the serotonergic psychedelics lysergic acid diethylamide (LSD) and psilocybin flatten the brain's control energy...