Consciousness and Cognition
February 2, 2017
Marek Havlík
16 citations
Consciousness still stands as one of the most interesting and the most elusive problems of neuroscience. Finding its correlates is the first step toward its satisfactory explanation. Several theories have proposed its correlates but none of them seem to be generally accepted even though most of them share some very similar elements. These elements are the activity of the thalamus, which is...
cIRcle (University of British Columbia)
2017
Peder Sande
Introduction: During a difficult life event, such as dealing with a chronic health condition, practicing acceptance of the difficulty alters the context in which a person views that difficulty. Acceptance of that difficulty reduces negative avoidant emotions that are key aspects of anxiety and depression. Acceptance is a central training feature of many contemplative practices, such as yoga....
Frontiers in Human Neuroscience
2017
Yusuf O Cakmak, Gazanfer Ekinci, Armin Heinecke et al.
Although minutes of a spinning episode may induce vertigo in the healthy human, as a result of a possible perceptional plasticity, Sufi Whirling Dervishes (SWDs) can spin continuously for an hour without a vertigo perception.This unique long term vestibular system stimulation presents a potential human model to clarify the cortical networks underlying the resistance against vertigo. This study,...
Mindfulness
2017
Martin Gartenschläger, Mathias Schreckenberger, Hans-Georg Buchholz et al.
Mindfulness denotes a state of consciousness characterized by receptive attention to and awareness of present events and experiences. As a personality trait, it constitutes the ability to become aware of mental activities such as sensations, images, feelings, and thoughts, and to disengage from judgment, conditioned emotions, and their cognitive processing or automatic inhibition. Default brain...
arXiv Preprint Archive
November 27, 2016
Nadav Amir, Israel Nelken, Naftali Tishby
preprint
The attentional blink (AB) effect is the reduced ability of subjects to report a second target stimuli (T2) among a rapidly presented series of non-target stimuli, when it appears within a time window of about 200-500 ms after a first target (T1). We present a simple dynamical systems model explaining the AB as resulting from the temporal response dynamics of a stochastic, linear system with...
Frontiers in Pharmacology
September 27, 2016
Sara de la Salle, Joëlle Choueiry, D. Shah et al.
N-methyl-D-aspartate (NMDA) receptor antagonists administered to healthy humans results in schizophrenia-like symptoms, which preclinical research suggests are due to glutamatergically altered brain oscillations. Here, we examined resting-state electroencephalographic activity in 21 healthy volunteers assessed in a placebo-controlled, double-blind, randomized study involving administration of...
Biological Psychology
September 2016
Christophe E De Bézenac, Vanessa Sluming, André Gouws et al.
In normal circumstances we can easily distinguish between changes to the external world brought about by our own actions from those with external causes. However, in certain contexts our sense of ownership and agency over acts is not so clear. Neuroimaging studies have implicated a number of regions in the sense of agency, some of which have been shown to vary continuously with action-outcome...
Data in brief
September 1, 2016
Aviva Berkovich-Ohana, Michal Harel, Avital Hahamy et al.
FMRI data described here was recorded during resting-state in Mindfulness Meditators (MM) and control participants (see "Task-induced activity and resting-state fluctuations undergo similar alterations in visual and DMN areas of long-term meditators" Berkovich-Ohana et al. (2016) [1] for details). MM participants were also scanned during meditation. Analyses focused on functional connectivity...
PLoS One
August 25, 2016
Jonathan Smallwood, Theodoros Karapanagiotidis, Florence Ruby et al.
When not engaged in the moment, we often spontaneously represent people, places and events that are not present in the environment. Although this capacity has been linked to the default mode network (DMN), it remains unclear how interactions between the nodes of this network give rise to particular mental experiences during spontaneous thought. One hypothesis is that the core of the DMN...
Anesthesiology
August 9, 2016
Vincent Bonhomme, Audrey Vanhaudenhuyse, Athena Demertzi et al.
206 citations
BACKGROUND: Consciousness-altering anesthetic agents disturb connectivity between brain regions composing the resting-state consciousness networks (RSNs). The default mode network (DMn), executive control network, salience network (SALn), auditory network, sensorimotor network (SMn), and visual network sustain mentation. Ketamine modifies consciousness differently from other agents, producing...