Results 101 to 110 of about 336,986 (421)

Circadian clocks: from stem cells to tissue homeostasis and regeneration

open access: yesEMBO Reports, 2017
The circadian clock is an evolutionarily conserved timekeeper that adapts body physiology to diurnal cycles of around 24 h by influencing a wide variety of processes such as sleep‐to‐wake transitions, feeding and fasting patterns, body temperature, and ...
Pieterjan Dierickx   +2 more
semanticscholar   +1 more source

Threshold Values of Sleep Spindles Features in Healthy Adults Using Scalp‐EEG and Associations With Sleep Parameters

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Sleep spindles are an electrophysiological fingerprint of the sleeping human brain. They can be described in terms of duration, frequency, amplitude, and density, and vary widely according to age and sex. Spindles play a role in sleep and wake functions and are altered in several neurological and psychiatric disorders.
Julien Coelho   +8 more
wiley   +1 more source

Towards an Understanding of Circatidal Clocks

open access: yesFrontiers in Physiology, 2022
Circadian clocks are an intrinsic element of life that orchestrate appropriately timed daily physiological and behavioural rhythms entrained to the solar cycle, thereby conferring increased fitness.
Alberto Rock   +2 more
doaj   +1 more source

The Circadian Clock, Reward, and Memory [PDF]

open access: yesFrontiers in Molecular Neuroscience, 2011
During our daily activities, we experience variations in our cognitive performance, which is often accompanied by cravings for small rewards, such as consuming coffee or chocolate. This indicates that the time of day, cognitive performance, and reward may be related to one another.
openaire   +5 more sources

Biodegradable, Humidity‐Insensitive Mask‐Integrated E‐Nose for Sustainable and Non‐Invasive Continuous Breath Analysis

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a paper‐based biodegradable, humidity‐insensitive e‐nose for real‐time breath analysis, addressing challenges in existing technologies such as humidity interference, high costs, and environmental impact. Featuring hydrophobic polymer coatings, these sensors reliably detect VOCs even in high‐moisture environments.
Indrajit Mondal   +2 more
wiley   +1 more source

Controlled Magnesium Ion Delivery via Mg‐Sputtered Nerve Conduit for Enhancing Peripheral Nerve Regeneration

open access: yesAdvanced Healthcare Materials, EarlyView.
This study introduces a controllable degradation system for Mg‐based biomaterials using sputtering technology, marking a significant advancement in nerve regeneration research. The Mg‐sputtered nerve conduits demonstrate enhanced biocompatibility, biofunctionality, mechanical compatibility, and precise magnesium release, resulting in improved axonal ...
Hyewon Kim   +12 more
wiley   +1 more source

Differential Impacts of the Head on Platynereis dumerilii Peripheral Circadian Rhythms

open access: yesFrontiers in Physiology, 2019
The marine bristle worm Platynereis dumerilii is a useful functional model system for the study of the circadian clock and its interplay with others, e.g., circalunar clocks. The focus has so far been on the worm’s head.
Enrique Arboleda   +6 more
doaj   +1 more source

Circadian clocks optimally adapt to sunlight for reliable synchronization [PDF]

open access: yesJournal of the Royal Society Interface, 11, 20131018 (2014), 2013
Circadian oscillation provides selection advantages through synchronization to the daylight cycle. However, a reliable clock must be designed through two conflicting properties: entrainability to synchronize internal time with periodic stimuli such as sunlight, and regularity to oscillate with a precise period.
arxiv   +1 more source

In Synch but Not in Step: Circadian Clock Circuits Regulating Plasticity in Daily Rhythms [PDF]

open access: yes, 2016
The suprachiasmatic nucleus (SCN) is a network of neural oscillators that program daily rhythms in mammalian behavior and physiology. Over the last decade much has been learned about how SCN clock neurons coordinate together in time and space to form a ...
Evans, Jennifer A., Gorman, M. R.
core   +2 more sources

Heterogeneity of cellular circadian clocks in intact plants and its correction under light-dark cycles

open access: yesScience Advances, 2016
Cellular circadian clocks in a plant work in coordination under light-dark cycles by correcting heterogeneous traits between them. Recent advances in single-cell analysis have revealed the stochasticity and nongenetic heterogeneity inherent to cellular ...
Tomoaki Muranaka, T. Oyama
semanticscholar   +1 more source

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