Results 31 to 40 of about 3,819 (142)

Modeling circadian and sleep-homeostatic effects on short-term interval timing [PDF]

, 2015
Short-term interval timing i.e., perception and action relating to durations in the seconds range, has been suggested to display time-of-day as well as wake dependent fluctuations due to circadian and sleep-homeostatic changes to the rate at which an ...
Aritake, Sayaka, Hida, Akiko, Higuchi, Shigekazu, Kitamura, Shingo, Meyer, Andrea Hans, Mishima, Kazuo, Moriguchi, Yoshiya, Späti, Jakub   +7 more
core   +2 more sources

Sleep Deprivation in Mice: Looking Beyond the Slow Wave Rebound

Journal of Sleep Research, EarlyView.
ABSTRACT Sleep is a fundamental process supporting the dynamic regulation of neural function. Emerging methods have proposed that the aperiodic components of brain signals (such as the spectral slope, spectral intercept, and spectral knee), in addition to entropy‐based measures, offer robust empirical markers of neural states.
Tárek Zoltán Magyar, Orsolya Szalárdy, Róbert Bódizs   +2 more
wiley   +1 more source

Spiral Waves in Media with Complex Excitable Dynamics

, 1999
The structure of spiral waves is investigated in super-excitable reaction-diffusion systems where the local dynamics exhibits multi-looped phase space trajectories.
ANDREI GORYACHEV, Barkley D., Goryachev A., RAYMOND KAPRAL, Tyson J., Winfree A.   +5 more
core   +1 more source

No Evidence for Seasonal Variations in Fatigue, Sleepiness and Insomnia Symptoms: Spring Fatigue Is a Cultural Phenomenon Rather Than a Seasonal Syndrome

Journal of Sleep Research, EarlyView.
ABSTRACT Although not as prominent as in other animals, humans also experience seasonal variations in sleep duration and circadian processes. These variations are likely primarily driven by changes in photoperiod length. Anecdotally, many people report experiencing fatigue and low energy levels, particularly during spring in Germany, Switzerland and ...
Christine Blume, Albrecht Vorster
wiley   +1 more source

The Recent History of Seasonal Affective Disorder (SAD) [PDF]

, 2014
Seminar TranscriptPsychiatric diagnosis is controversial and is regarded by some principally as a means of reinforcing the vested interests of medical professionals and pharmaceutical companies.
Overy, C, Tansey, EM
core  

Salivary melatonin onset in youth at familial risk for bipolar disorder [PDF]

, 2019
Melatonin secretion and polysomnography (PSG) were compared among a group of healthy adolescents who were at high familial risk for bipolar disorder (HR) and a second group at low familial risk (LR).
Armitage, Roseanne, Bertram, Holli, Fullerton, Janice M., Ghaziuddin, Neera, Glowinski, Anne L., Hulvershorn, Leslie A., Kamali, Masoud, McInnis, Melvin, Mitchell, Philip B., Nurnberger, John, Roberts, Gloria M. P., Shamseddeen, Wael, Stapp, Emma, Wilcox, Holly C.   +13 more
core   +2 more sources

Mapping Escolar (Lepidocybium flavobrunneum) in Motion: Oceanographic Forces Shaping Its Habitat in the Southwestern South Atlantic, With Insights From Fishers' Perceptions

Fisheries Oceanography, Volume 35, Issue 3, Page 445-461, May 2026.
ABSTRACT Lepidocybium flavobrunneum [Smith, 1843], commonly known as escolar, is a large pelagic species, important for global and local fisheries, particularly in the southwestern South Atlantic Ocean (SWAO), where it constitutes a significant portion of the catch.
Lucas Rodrigues, Maria Grazia Pennino, Paul Gerhard Kinas, David Conesa, Alba Fuster‐Alonso, Andrés Domingo, Rodrigo Forselledo, Federico Mas, Bruno Mourato, Rodrigo Sant'Ana, Vinni Santos Thykjaer, Raquel Virginia Marquez Marquez, Abner Ventura Alves, Mariano Cabanillas‐Torpoco, Rafael Schroeder, Luis Gustavo Cardoso   +15 more
wiley   +1 more source

Subjective and Objective Sleep Measures in Patients With Insomnia With and Without Depression

Brain and Behavior, Volume 16, Issue 4, April 2026.
While current depressive symptoms are associated primary with subjective sleep quality parameters, depressive disorder as a trait is linked to objective changes of the sleep architecture. All measures controlled for confounders (age, sex, comorbidities, medication).
Tina Carbonetti, Michal Bechny, Corrado Garbazza, Jana Koprivova, Karolina Janku, Helen Christina Slawik, Annette Beatrix Bruehl, Undine Emmi Lang, Jan Sarlon   +8 more
wiley   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, Volume 600, Issue 6, Page 765-792, March 2026.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Linear nonequilibrium thermodynamics of reversible periodic processes and chemical oscillations

, 2017
Onsager's phenomenological equations successfully describe irreversible thermodynamic processes. They assume a symmetric coupling matrix between thermodynamic fluxes and forces. It is easily shown that the antisymmetric part of a coupling matrix does not
Heimburg, Thomas
core   +1 more source