What is sleep exactly? Global and local modulations of sleep oscillations all around the clock

T Andrillon, D Oudiette - Neuroscience & Biobehavioral Reviews, 2023 - Elsevier
Wakefulness, non-rapid eye-movement (NREM) and rapid eye-movement (REM) sleep differ
from each other along three dimensions: behavioral, phenomenological, physiological …

Dual function of thalamic low-vigilance state oscillations: rhythm-regulation and plasticity

V Crunelli, ML Lőrincz, WM Connelly, F David… - Nature Reviews …, 2018 - nature.com
During inattentive wakefulness and non-rapid eye movement (NREM) sleep, the neocortex
and thalamus cooperatively engage in rhythmic activities that are exquisitely reflected in the …

Cortical circuit activity underlying sleep slow oscillations and spindles

N Niethard, HVV Ngo, I Ehrlich… - Proceedings of the …, 2018 - National Acad Sciences
Slow oscillations and sleep spindles are hallmarks of the EEG during slow-wave sleep
(SWS). Both oscillatory events, especially when co-occurring in the constellation of spindles …

The claustrum coordinates cortical slow-wave activity

K Narikiyo, R Mizuguchi, A Ajima, M Shiozaki… - Nature …, 2020 - nature.com
During sleep and awake rest, the neocortex generates large-scale slow-wave (SW) activity.
Here, we report that the claustrum coordinates neocortical SW generation. We established a …

The human thalamus orchestrates neocortical oscillations during NREM sleep

T Schreiner, E Kaufmann, S Noachtar… - Nature …, 2022 - nature.com
A hallmark of non-rapid eye movement sleep is the coordinated interplay of slow oscillations
(SOs) and sleep spindles. Traditionally, a cortico-thalamo-cortical loop is suggested to …

Sleep-like cortical OFF-periods disrupt causality and complexity in the brain of unresponsive wakefulness syndrome patients

M Rosanova, M Fecchio, S Casarotto, S Sarasso… - Nature …, 2018 - nature.com
Unresponsive wakefulness syndrome (UWS) patients may retain intact portions of the
thalamocortical system that are spontaneously active and reactive to sensory stimuli but fail …

Rapid fast-delta decay following prolonged wakefulness marks a phase of wake-inertia in NREM sleep

J Hubbard, TC Gent, MMB Hoekstra… - Nature …, 2020 - nature.com
Sleep-wake driven changes in non-rapid-eye-movement sleep (NREM) sleep (NREMS)
EEG delta (δ-) power are widely used as proxy for a sleep homeostatic process. Here, we …

Low-frequency hippocampal–cortical activity drives brain-wide resting-state functional MRI connectivity

RW Chan, ATL Leong, LC Ho, PP Gao… - Proceedings of the …, 2017 - National Acad Sciences
The hippocampus, including the dorsal dentate gyrus (dDG), and cortex engage in
bidirectional communication. We propose that low-frequency activity in hippocampal …

Slow periodic activity in the longitudinal hippocampal slice can self‐propagate non‐synaptically by a mechanism consistent with ephaptic coupling

CC Chiang, RS Shivacharan, X Wei… - The Journal of …, 2019 - Wiley Online Library
Key points Slow periodic activity can propagate with speeds around 0.1 ms− 1 and be
modulated by weak electric fields. Slow periodic activity in the longitudinal hippocampal …

Ripple-locked coactivity of stimulus-specific neurons and human associative memory

L Kunz, BP Staresina, PC Reinacher, A Brandt… - Nature …, 2024 - nature.com
Associative memory enables the encoding and retrieval of relations between different
stimuli. To better understand its neural basis, we investigated whether associative memory …