A fundamental aspect of the sense of self is its pre-reflective dimension specifying the self as a bounded and embodied knower and agent. Being a constant and tacit feature structuring consciousness, it eludes robust empirical exploration. Recently, deep meditative states involving global dissolution of the sense of self have been suggested as a promising path for advancing such an...
Abstract As source of sensory information, the body provides a sense of agency and self/non-self-discrimination. The integration of bodily states and sensory inputs with prior beliefs has been linked to the generation of bodily self-consciousness. The ability to detect surprising tactile stimuli is essential for the survival of an organism and for the formation of mental body representations....
Sleep resting state network (RSN) functional connectivity (FC) is poorly understood, particularly for rapid eye movement (REM), and in non-sleep deprived subjects. REM and non-REM (NREM) sleep involve competing drives; towards hypersynchronous cortical oscillations in NREM; and towards wake-like desynchronized oscillations in REM. This study employed simultaneous...
Altered level of consciousness (ALC) represents a neurological emergency, which demands a methodical approach to evaluation and treatment. Emergency departments’ Paediatricians dealing with children with ALC need a rapid and reliable diagnostic process to rule out life-threatening conditions. ALC can be caused by structural and non-structural conditions, and, among non-structural conditions,...
NeuroimageJune 1, 2021Yi-Xuan Feng, Ren-Yuan Li, Wei Wei et al.
Volitional eye closure is observed only in conscious and awake humans, and is rare in animals. It is believed that eye closure can focus one's attention inward and facilitate activities such as meditation and mental imagery. Congenital blind individuals are also required to close their eyes for these activities. Resting-state functional magnetic resonance imaging (RS-fMRI) studies have found...
The resurgence of interest in the therapeutic potential of psychedelics for treating psychiatric disorders has rekindled efforts to elucidate their mechanism of action. In this Perspective, we focus on the ability of psychedelics to promote neural plasticity, postulated to be central to their therapeutic activity. We begin with a brief overview of the history and behavioral effects of the...
BACKGROUND: Mental retardation (MR) is a developmental condition that is associated with significant intellectual and adaptive behavioral limitations, whereas dissociative trance disorder (DTD) is a dissociative condition characterized by a temporary altered state of consciousness formed by one’s culture. Comorbidity between these two disorders has rarely been reported. CASE REPORT: We found a...
The development of sophisticated computational tools to quantify changes in the brain's oscillatory dynamics across states of consciousness have included both envelope- and phase-based measures of functional connectivity (FC), but there are very few direct comparisons of these techniques using the same dataset. The goal of this study was to compare an envelope-based (i.e. Amplitude Envelope...
This study examines the interconnectedness between absorption, inner speech, self, and psychopathology. Absorption involves an intense focus and immersion in mental imagery, sensory/perceptual stimuli, or vivid imagination that involves decreased self-awareness and alterations in consciousness. In psychosis, the dissolution and permeability in the demarcation between self and one's sensory...
Lucid dreaming (LD) is a fun and interesting activity, but most participants have difficulties in attaining lucidity, retaining it during the dream, concentrating on the needed task and remembering the results. This motivates to search for a new way to enhance lucid dreaming via different induction techniques, including chemicals and electric brain stimulation. However, results are still...