Skip to content

Default mode network: all studies

Page 128 of 155: studies 1,271 to 1,280 of 1,549, newest first. Back to the default mode network overview

Research

Modulation of the functional connectome in major depressive disorder by ketamine therapy.

Psychological Medicine October 1, 2022 Ashish K Sahib, Joana R Loureiro, Megha M Vasavada et al. 36 citations

Subanesthetic ketamine infusion therapy can produce fast-acting antidepressant effects in patients with major depression. How single and repeated ketamine treatment modulates the whole-brain functional connectome to affect clinical outcomes remains uncharacterized. Data-driven whole brain functional connectivity (FC) analysis was used to identify the functional connections modified by ketamine...

DOI: 10.1017/s0033291720004560 (opens in new tab) Full text (opens in new tab) Ketamine Functional connectivity Major depression Salience network

The Vestibulocerebellum and the Shattered Self: a Resting-State Functional Connectivity Study in Posttraumatic Stress Disorder and Its Dissociative Subtype

Cerebellum September 19, 2022 Daniela Rabellino, J. Thome, Maria Densmore et al.

The flocculus is a region of the vestibulocerebellum dedicated to the coordination of neck, head, and eye movements for optimal posture, balance, and orienting responses. Despite growing evidence of vestibular and oculomotor impairments in the aftermath of traumatic stress, little is known about the effects of chronic psychological trauma on vestibulocerebellar functioning. Here, we...

Underlying mechanisms of mindfulness meditation: Genomics, circuits, and networks.

World Journal of Psychiatry September 19, 2022 Ying-Qi Gu, Yi Zhu

Understanding neuropsychological mechanisms of mindfulness meditation (MM) has been a hot topic in recent years. This review was conducted with the goal of synthesizing empirical relationships via the genomics, circuits and networks between MM and mental disorders. We describe progress made in assessing the effects of MM on gene expression in immune cells, with particular focus on...

DOI: 10.5498/wjp.v12.i9.1141 (opens in new tab) Full text (opens in new tab) Gene expression Mindfulness meditation Neural circuits Neural networks

Comparing the three states of Dhikr, meditation, and thinking about God: an fMRI study

Religion, Brain & Behavior September 14, 2022 M. Saraei, Andrew B. Newberg, Seyed Ruhollah Hosseini et al.

ABSTRACT Objectives: While there are researches on the neural processes of some religious/spiritual practices like mindfulness meditation, no fMRI research on brain functions of mindfulness in Islam is available. Methods: In this study, by using a 3T MRI machine and recruiting 31 (16F) mentally and physically healthy and highly religious individuals, we performed four different tasks during the...

Long-term Meditation Training Is Associated with Enhanced Subjective Attention and Stronger Posterior Cingulate-Rostrolateral Prefrontal Cortex Resting Connectivity.

Journal of Cognitive Neuroscience August 1, 2022 Tammi R. A. Kral, Regina C Lapate, Ted Imhoff‐Smith et al.

Mindfulness meditation has been shown to increase resting-state functional connectivity (rsFC) between the posterior cingulate cortex (PCC) and dorsolateral prefrontal cortex (DLPFC), which is thought to reflect improvements in shifting attention to the present moment. However, prior research in long-term meditation practitioners lacked quantitative measures of attention that would provide a...

Psilocybin reduces low frequency oscillatory power and neuronal phase-locking in the anterior cingulate cortex of awake rodents

Scientific Reports July 26, 2022 Caroline T. Golden, Paul Chadderton 45 citations

Abstract Psilocybin is a hallucinogenic compound that is showing promise in the ability to treat neurological conditions such as depression and post-traumatic stress disorder. There have been several investigations into the neural correlates of psilocybin administration using non-invasive methods, however, there has yet to be an invasive study of the mechanism of action in awake rodents. Using...

DOI: 10.1038/s41598-022-16325-w (opens in new tab) Full text (opens in new tab) Psilocybin Anterior cingulate cortex Cortex anatomy Hallucinogen +3

Brain connectivity changes of propofol-induced altered states of consciousness using High-Density EEG Source Estimation.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference July 1, 2022 Zhian Liu, Lichengxi Si, Tianyu Wang et al.

Through source estimation, high-density electroencephalogram (EEG) signals at scalp level can be converted into signals at cerebral cortex level, which helps to measure cortical activity during anesthesia induced changes in consciousness level to explore the mechanism. In this research, the high-density EEG of propofol-induced consciousness states alterations in 20 healthy adults were converted...

Neuropsychological effect on long-term Ayahuasca use

Counseling And Psychological Services Dissertations (Georgia State University) June 2, 2022 Tiffany D Tucker 1 citation

Ayahuasca is a hallucinogenic tea used in religious ritual ceremonies in eastern parts of South America. Ayahuasca is becoming more popular in western countries for therapeutic use for depression, drug addiction, and emotional distress (Domínguez-Clavé et al., 2016). Previous research has explored the effects ayahuasca may have on cognition, neurological functioning, and psychopathology....

DOI: 10.57709/12628841 (opens in new tab) Ayahuasca Term time Neuropsychology Cognition

Anterior insula as a gatekeeper of executive control.

Neuroscience and biobehavioral reviews June 1, 2022 Istvan Molnar-Szakacs, Lucina Q. Uddin

Executive control is a complex high-level cognitive function that relies on distributed brain circuitry. We propose that the anterior insular cortex plays an under-appreciated role in executive processes, acting as a gatekeeper to other brain regions and networks by virtue of primacy of action and effective connectivity. The flexible functional profile of the anterior insular subdivision...

Neural network involvement for religious experiences in worship measured by EEG microstate analysis.

Social Neuroscience June 1, 2022 Yoshija Walter, Thomas Koenig

Not much is known about large-scale brain activation patterns in religious states of mind and previous studies have not set an emphasis on experience. The present study investigated the phenomenon of religious experiences through microstate analysis, and it was the first neurocognitive research to tackle the dimension of experience directly. Hence, a total of 60 evangelical Christians...