Human Brain Mapping
June 5, 2020
Elvis Dohmatob, G. Dumas, D. Bzdok
The default mode network (DMN) is believed to subserve the baseline mental activity in humans. Its higher energy consumption compared to other brain networks and its intimate coupling with conscious awareness are both pointing to an unknown overarching function. Many research streams speak in favor of an evolutionarily adaptive role in envisioning experience to anticipate the future. In the...
Communications Biology
May 20, 2020
Talia Brandman, R. Malach, E. Simony
The default mode network (DMN) is a group of high-order brain regions recently implicated in processing external naturalistic events, yet it remains unclear what cognitive function it serves. Here we identified the cognitive states predictive of DMN fMRI coactivation. Particularly, we developed a state-fluctuation pattern analysis, matching network coactivations across a short movie with...
bioRxiv (Cold Spring Harbor Laboratory)
April 1, 2020
Matthew L. Dixon, Manesh Girn, Kalina Christoff
14 citations
preprint
Abstract Individuals use various strategies to cope with challenging emotions such as anxiety. Mindful acceptance involves broadening attentional scope and fully experiencing present moment sensory feelings (whether pleasant or unpleasant) without judgment or elaboration. In contrast, narrative-evaluation involves focusing on a narrow band of sensory experience and generating an elaborate...
Semiotica
March 26, 2020
Antonio Duarte
Abstract: The main purpose of this article is to identify the inner human activity Peirce calls musement with the mental processes that arise through the workings of the brain’s default mode network. This network is a specific, recently anatomically defined brain system, which is most active when individuals are not focused on the external environment. In doing so, musement, which was defined...
Cerebral Cortex
March 21, 2020
Haiteng Jiang, Bin He, Xiaoli Guo et al.
40 citations
Despite accumulating evidence suggesting improvement in one's well-being as a result of meditation, little is known about if or how the brain and the periphery interact to produce these behavioral and mental changes. We hypothesize that meditation reflects changes in the neural representations of visceral activity, such as cardiac behavior, and investigated the integration of neural and...
Frontiers in Psychology
February 18, 2020
Ulf Winter, Pierre Levan, Tilmann Lhündrup Borghardt et al.
68 citations
The minimal neural correlate of the conscious state, regardless of the neural activity correlated with the ever-changing contents of experience, has still not been identified. Different attempts have been made, mainly by comparing the normal waking state to seemingly unconscious states, such as deep sleep or general anesthesia. A more direct approach would be the neuroscientific investigation...
arXiv Preprint Archive
February 11, 2020
Jae-Geun Yoon, Minji Lee
preprint
Motor imagery based brain-computer interfaces (MI-BCIs) allow the control of devices and communication by imagining different muscle movements. However, most studies have reported a problem of "BCI-illiteracy" that does not have enough performance to use MI-BCI. Therefore, understanding subjects with poor performance and finding the cause of performance variation is still an important...
Frontiers in Physiology
February 11, 2020
Thomas A. W. Bolton, Diana Wotruba, Roman Buechler et al.
83 citations
Emerging evidence has attributed altered network coordination between the default mode, central executive, and salience networks (DMN/CEN/SAL) to disturbances seen in schizophrenia, but little is known for at-risk psychosis stages. Moreover, pinpointing impairments in specific network-to-network interactions, although essential to resolve possibly distinct harbingers of conversion to clinically...
Psychiatry Research
January 14, 2020
Clemens C C Bauer, Kana Okano, Satrajit Ghosh et al.
87 citations
Auditory hallucinations (AHs) are one of the most distressing symptoms of schizophrenia (SZ) and are often resistant to medication. Imaging studies of individuals with SZ show hyperactivation of the default mode network (DMN) and the superior temporal gyrus (STG). Studies in SZ show DMN hyperconnectivity and reduced anticorrelation between DMN and the central executive network (CEN). DMN...
Evolutionary Perspectives on Imaginative Culture
2020
Joseph Carroll
AbstractThe purpose of this chapter is to explain how imaginative verbal artifacts are produced by the imagination and in turn influence the imagination. Assimilating recent neuroscientific research on the evolution of modern brain shape and on the brain’s default mode network, we can now say with confidence that the imagination is a neurological reality, that it is lodged in specific parts of...
Neuroscience of Consciousness
2020
Tehseen Noorani, Ben Alderson-Day
8 citations
In 'REBUS and the Anarchic Brain: Towards a Unified Model of the Brain Action of Psychedelics', Carhart-Harris and Friston offer an important analysis of what the predictive processing framework has to offer our understanding of psychedelic experiences, providing an invaluable ground for psychedelic psychiatry. While applauding this, we encourage paying greater attention to contextual factors...
Scientific Reports
2020
Shogo Kajimura, Naoki Masuda, Johnny King L. Lau et al.
29 citations
Research has shown that focused attention meditation not only improves our cognitive and motivational functioning (e.g., attention, mental health), it influences the way our brain networks [e.g., default mode network (DMN), fronto-parietal network (FPN), and sensory-motor network (SMN)] function and operate. However, surprisingly little attention has been paid to the possibility that meditation...