Results 21 to 30 of about 930,593 (248)

Dynamic analysis of the conditional oscillator underlying slow waves in thalamocortical neurons

open access: yesFrontiers in Neural Circuits, 2016
During non-REM sleep the EEG shows characteristics waves that are generated by the dynamic interactions between cortical and thalamic oscillators.
Francois eDavid   +14 more
doaj   +1 more source

Neuronal synchrony during anesthesia : a thalamocortical model [PDF]

open access: yes, 2008
There is growing evidence in favor of the temporal-coding hypothesis that temporal correlation of neuronal discharges may serve to bind distributed neuronal activity into unique representations and, in particular, that theta (3.5–7.5 Hz) and delta (0.5 ,
Stefanovska, Aneta   +2 more
core   +5 more sources

The propagation and damping of slow magnetoacoustic waves in the solar atmosphere [PDF]

open access: yes, 2012
The propagation and damping of slow magnetoacoustic waves in the solar atmosphere is investigated, with particular emphasis placed on waves with periodicities of five minutes. The basic model of a uniform temperature loop is extended by the addition of
Owen, Nicholas Robert
core   +2 more sources

Altered sleep spindles and slow waves during space shuttle missions

open access: yesnpj Microgravity, 2021
Sleep deficiencies and associated performance decrements are common among astronauts during spaceflight missions. Previously, sleep in space was analyzed with a focus on global measures while the intricate structure of sleep oscillations remains largely ...
Dominik P. Koller   +6 more
doaj   +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.
Voss, Logan J.   +5 more
core   +1 more source

Common oscillatory mechanisms across multiple memory systems

open access: yesnpj Science of Learning, 2017
The cortex, hippocampus, and striatum support dissociable forms of memory. While each of these regions contains specialized circuitry supporting their respective functions, all structure their activities across time with delta, theta, and gamma rhythms ...
Drew B. Headley, Denis Paré
doaj   +1 more source

Locus coeruleus noradrenergic neurons phase-lock to prefrontal and hippocampal infra-slow rhythms that synchronize to behavioral events

open access: yesFrontiers in Cellular Neuroscience, 2023
The locus coeruleus (LC) is the primary source of noradrenergic projections to the forebrain, and, in prefrontal cortex, is implicated in decision-making and executive function. LC neurons phase-lock to cortical infra-slow wave oscillations during sleep.
Liyang Xiang   +7 more
doaj   +1 more source

Decoupling of sleep-dependent cortical and hippocampal interactions in a neurodevelopmental model of schizophrenia [PDF]

open access: yes, 2012
Rhythmic neural network activity patterns are defining features of sleep, but interdependencies between limbic and cortical oscillations at different frequencies and their functional roles have not been fully resolved.
Tricklebank, Mark   +18 more
core   +1 more source

NREM sleep oscillations and brain plasticity in aging

open access: yesFrontiers in Neurology, 2012
The human electroencephalogram (EEG) during non-rapid eye movement sleep (NREM) is characterized mainly by high-amplitude (> 75 µV), slow-frequency (< 4 Hz) waves (slow waves; SW) and sleep spindles (~11-15 Hz; > 0.25 s).
Stuart eFogel   +22 more
doaj   +1 more source

A numerical analysis of slow oscillations in dynamics of coupled systems [PDF]

open access: yes, 1998
We study a system that models a problem in which an oscillatory unit is coupled to a passive medium. We analyze the case in which an RCL circuit is coupled to an RC circuit.
Watanabe, Masaji
core   +1 more source

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