Results 21 to 30 of about 87,311 (279)

Alterations of medial prefrontal cortex bioelectrical activity in experimental model of isoprenaline-induced myocardial infarction [PDF]

open access: yes, 2020
Background Clinical and animal studies have found that anxiety and depression are significantly more common after acute myocardial infarction (AMI).
Hrnčić, Dragan   +7 more
core   +1 more source

Phase transitions in single neurons and neural populations: Critical slowing, anesthesia, and sleep cycles [PDF]

open access: yes, 2010
The firing of an action potential by a biological neuron represents a dramatic transition from small-scale linear stochastics (subthreshold voltage fluctuations) to gross-scale nonlinear dynamics (birth of a 1-ms voltage spike). In populations of neurons
Sleigh, James W.   +3 more
core   +2 more sources

Effects of paradoxical sleep deprivation on behavioral reactions and ultrastructure of the brain neurons in rats

open access: yesАнналы клинической и экспериментальной неврологии, 2017
The aim of this work was morpho-functional analysis of theeffect of paradoxical sleep deprivation of different duration onultrastructure of the brain neurons, as well as on rearing, grooming,sexual activity and food and water consumption.
B. M. Abushov
doaj   +1 more source

Differential Effects of Psychological and Physical Stress on the Sleep Pattern in Rats [PDF]

open access: yes, 2007
In the present study, we investigated the acute effects of 2 different kinds of stress, namely physical stress (foot shock) and psychological stress (non-foot shock) induced by the communication box method, on the sleep patterns of rats.
Araki, Hiroaki   +3 more
core   +1 more source

Medication overuse headache, addiction and personality pathology: a controlled study by SWAP-200 [PDF]

open access: yes, 2019
Background: Medication Overuse Headache (MOH) is a type of chronic headache, whose mechanisms are still unknown. Some empirical investigations examining the addiction-like behaviors and processes, as well as personality characteristics underlying MOH ...
Cristofalo, Patrizia   +8 more
core   +1 more source

Autonomic pain responses during sleep: a study of heart rate variability [PDF]

open access: yes, 2011
The autonomic nervous system (ANS) reacts to nociceptive stimulation during sleep, but whether this reaction is contingent to cortical arousal, and whether one of the autonomic arms (sympathetic/parasympathetic) predominates over the other remains ...
Baharav   +57 more
core   +1 more source

A continuum model for the dynamics of the phase transition from slow-wave sleep to REM sleep [PDF]

open access: yes, 2010
Previous studies have shown that activated cortical states (awake and rapid eye-movement (REM) sleep), are associated with increased cholinergic input into the cerebral cortex.
Li, Xiaoli   +5 more
core   +2 more sources

The sleep-wakefulness cycle of Wistar rats with spontaneous absence-like epilepsy

open access: yesActa Scientiarum: Biological Sciences, 2015
Possible interactions between the sleep-wakefulness cycle and a new kind of spontaneous epilepsy, expressed as absence-like seizures and spike-wave bursts in FMUSP rats, are evaluated.
Edison Sanfelice André   +3 more
doaj   +1 more source

Living absence:the strange geographies of missing people [PDF]

open access: yes, 2015
In this paper ‘missing people’ gain an unstable presence through their (restaged) testimonies recounting individual occupations of material urban public space during the lived practice of absence.
Fyfe, Nicholas R.   +3 more
core   +7 more sources

The involvement of noradrenaline in rapid eye movement (REM) sleep mentation

open access: yesFrontiers in Neurology, 2011
Noradrenaline, one of the main brain monoamines, has powerful central influences on neurobiological processes in the forebrain which support the mental activities occurring during the sleep–waking cycle. Noradrenergic neurons are activated during waking,
Claude eGottesmann
doaj   +1 more source

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