scholarly journals Functional connectivity of the human hypothalamus during wakefulness and nonrapid eye movement sleep

2021 ◽  
Author(s):  
Jun Jiang ◽  
Guangyuan Zou ◽  
Jiayi Liu ◽  
Shuqin Zhou ◽  
Jing Xu ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Eye Movement ◽  
Human Hypothalamus

scholarly journals Altered Functional Connectivity in Idiopathic Rapid Eye Movement Sleep Behavior Disorder: A Resting-State EEG Study

SLEEP ◽  
2017 ◽  
Vol 40 (6) ◽  
Author(s):  
Jun-Sang Sunwoo ◽  
Sanghun Lee ◽  
Jung-Hoon Kim ◽  
Jung-Ah Lim ◽  
Tae-Joon Kim ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Eye Movement ◽  
Resting State ◽  
Behavior Disorder ◽  
Rapid Eye Movement ◽  
Rapid Eye Movement Sleep ◽  
Sleep Behavior

scholarly journals Global field synchronization reveals rapid eye movement sleep as most synchronized brain state in the human EEG

2016 ◽  
Vol 3 (10) ◽  
pp. 160201 ◽  
Author(s):  
Peter Achermann ◽  
Thomas Rusterholz ◽  
Roland Dürr ◽  
Thomas König ◽  
Leila Tarokh
Keyword(s):  
Functional Connectivity ◽  
Sleep Deprivation ◽  
Eye Movement ◽  
Rem Sleep ◽  
Nrem Sleep ◽  
Brain Regions ◽  
Global Field ◽  
Brain State ◽  
Rapid Eye Movement ◽  
Eyes Closed

Sleep is characterized by a loss of consciousness, which has been attributed to a breakdown of functional connectivity between brain regions. Global field synchronization (GFS) can estimate functional connectivity of brain processes. GFS is a frequency-dependent measure of global synchronicity of multi-channel EEG data. Our aim was to explore and extend the hypothesis of disconnection during sleep by comparing GFS spectra of different vigilance states. The analysis was performed on eight healthy adult male subjects. EEG was recorded during a baseline night, a recovery night after 40 h of sustained wakefulness and at 3 h intervals during the 40 h of wakefulness. Compared to non-rapid eye movement (NREM) sleep, REM sleep showed larger GFS values in all frequencies except in the spindle and theta bands, where NREM sleep showed a peak in GFS. Sleep deprivation did not affect GFS spectra in REM and NREM sleep. Waking GFS values were lower compared with REM and NREM sleep except for the alpha band. Waking alpha GFS decreased following sleep deprivation in the eyes closed condition only. Our surprising finding of higher synchrony during REM sleep challenges the view of REM sleep as a desynchronized brain state and may provide insight into the function of REM sleep.

Large-scale functional brain networks in human non-rapid eye movement sleep: insights from combined electroencephalographic/functional magnetic resonance imaging studies

2011 ◽  
Vol 369 (1952) ◽  
pp. 3708-3729 ◽  
Author(s):  
Victor I. Spoormaker ◽  
Michael Czisch ◽  
Pierre Maquet ◽  
Lutz Jäncke
Keyword(s):  
Functional Connectivity ◽  
Eye Movement ◽  
Large Scale ◽  
Brain Plasticity ◽  
Experimental Studies ◽  
Nrem Sleep ◽  
Rapid Eye Movement ◽  
Functional Brain ◽  
Functional Brain Network ◽  
Spontaneous Oscillations

This paper reviews the existing body of knowledge on the neural correlates of spontaneous oscillations, functional connectivity and brain plasticity in human non-rapid eye movement (NREM) sleep. The first section reviews the evidence that specific sleep events as slow waves and spindles are associated with transient increases in regional brain activity. The second section describes the changes in functional connectivity during NREM sleep, with a particular focus on changes within a low-frequency, large-scale functional brain network. The third section will discuss the possibility that spontaneous oscillations and differential functional connectivity are related to brain plasticity and systems consolidation, with a particular focus on motor skill acquisition. Implications for the mode of information processing per sleep stage and future experimental studies are discussed.

scholarly journals Brain activation and hypothalamic functional connectivity during human non-rapid eye movement sleep: an EEG/fMRI study

Brain ◽  
2005 ◽  
Vol 129 (3) ◽  
pp. 655-667 ◽  
Author(s):  
C. Kaufmann ◽  
R. Wehrle ◽  
T. C. Wetter ◽  
F. Holsboer ◽  
D. P. Auer ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Eye Movement ◽  
Brain Activation ◽  
Rapid Eye Movement ◽  
Rapid Eye Movement Sleep ◽  
Fmri Study
Sign in / Sign up

Export Citation Format

Share Document