Results 41 to 50 of about 60,723 (294)

Detecting Brain Activity Following a Verbal Command in Patients With Disorders of Consciousness

Frontiers in Neuroscience, 2019
BackgroundThe accurate assessment of patients with disorders of consciousness (DOC) is a challenge to most experienced clinicians. As a potential clinical tool, functional magnetic resonance imaging (fMRI) could detect residual awareness without the need
Fuyan Wang, Fuyan Wang, Nantu Hu, Xiaohua Hu, Xiaohua Hu, Shan Jing, Lizette Heine, Lizette Heine, Aurore Thibaut, Wangshan Huang, Yifan Yan, Jing Wang, Caroline Schnakers, Caroline Schnakers, Steven Laureys, Haibo Di   +15 more
doaj   +1 more source

A Century Searching for the Neurons Necessary for Wakefulness

Frontiers in Neuroscience, 2022
Wakefulness is necessary for consciousness, and impaired wakefulness is a symptom of many diseases. The neural circuits that maintain wakefulness remain incompletely understood, as do the mechanisms of impaired consciousness in many patients. In contrast
Fillan S. Grady, Aaron D. Boes, Joel C. Geerling   +2 more
doaj   +1 more source

Of dreaming and wakefulness

Neuroscience, 1991
Following a set of studies concerning the intrinsic electrophysiology of mammalian central neurons in relation to global brain function, we reach the following conclusions: (i) the main difference between wakefulness and paradoxical sleep lies in the weight given to sensory afferents in cognitive images; (ii) otherwise, wakefulness and paradoxical ...
R R, Llinás, D, Paré
openaire   +2 more sources

Adenosine Downregulates the Activities of Glutamatergic Neurons in the Paraventricular Hypothalamic Nucleus Required for Sleep

Frontiers in Neuroscience, 2022
Adenosine is an endogenous substance that regulates sleep homeostasis. It plays an important role in sleep induction under physiological condition. So far, the neural mechanisms underlying sleep-promoting effects of adenosine are not completely clear ...
Changlin Chen, Yichen Lin, Feng Cai, Jinsui Li, Haixun Li, Xiantao Li   +5 more
doaj   +1 more source

Decoding Wakefulness Levels from Typical fMRI Resting-State Data Reveals Reliable Drifts between Wakefulness and Sleep [PDF]

, 2014
SummaryThe mining of huge databases of resting-state brain activity recordings represents state of the art in the assessment of endogenous neuronal activity—and may be a promising tool in the search for functional biomarkers.
Laufs, Helmut, Tagliazucchi, Enzo
core   +1 more source

From Lockdowns to Long COVID—Unraveling the Link Between Sleep, Chronotype, and Long COVID Symptoms

Brain Sciences
Background/Objectives: Given the heterogeneous nature of long COVID, its treatment and management remain challenging. This study aimed to investigate whether poor pre-pandemic sleep quality, its deterioration during the peak of the pandemic, and ...
Mariam Tsaava, Tamar Basishvili, Irine Sakhelashvili, Marine Eliozishvili, Nikoloz Oniani, Nani Lortkipanidze, Maria Tarielashvili, Lali Khoshtaria, Nato Darchia   +8 more
doaj   +1 more source

Arousal State-Dependent Alterations in Neural Activity in the Zebra Finch VTA/SNc

Frontiers in Neuroscience, 2020
Sleep-wake behaviors are important for survival and highly conserved among animal species. A growing body of evidence indicates that the midbrain dopaminergic system is associated with sleep-wake regulation in mammals.
Shin Yanagihara, Maki Ikebuchi, Chihiro Mori, Ryosuke O. Tachibana, Kazuo Okanoya, Kazuo Okanoya   +5 more
doaj   +1 more source

Dysfunctions of the paraventricular hypothalamic nucleus induce hypersomnia in mice

eLife, 2021
Hypersomnolence disorder (HD) is characterized by excessive sleep, which is a common sequela following stroke, infection, or tumorigenesis. HD is traditionally thought to be associated with lesions of wake-promoting nuclei.
Chang-Rui Chen, Yu-Heng Zhong, Shan Jiang, Wei Xu, Lei Xiao, Zan Wang, Wei-Min Qu, Zhi-Li Huang   +7 more
doaj   +1 more source

Relationship between sleep, stress and psychological distress in internally displaced persons depends on the length of displacement

Scientific Reports
In recent years, the number of refugees and internally displaced persons (IDPs) has dramatically grown worldwide. We aimed to examine psychological distress and its association with sleep and stress in two groups of IDPs with different lengths of ...
Tamar Basishvili, Marine Eliozishvili, Nani Lortkipanidze, Tengiz Tsuladze, Nikoloz Oniani, Nato Darchia   +5 more
doaj   +1 more source

Characteristics of ventromedial thalamic neuronal activity during sleep-wake cycle in mice

陆军军医大学学报, 2022
Objective To investigate the characteristics of ventromedial thalamus (VM) neuronal activity during sleep-wake cycles. Methods Both the oscillation state of electrical activity in the parietal cortex and three-dimensional acceleration of the head and ...
WANG Bin, WANG Bin, HU Yubo, HU Yubo, TONG Liuxia, TONG Liuxia   +5 more
doaj   +1 more source