Results 81 to 90 of about 661,949 (214)
Photochemistry and Photobiology, EarlyView.The circadian clock and melatonin coordinate homeostasis in many animals, yet their influence on reproduction and neoblast proliferation has only been shown in triclads. This study demonstrates that the early‐branching catenulid Stenostomum virginianum contains photoreceptive refractile bodies, synthesizes endogenous melatonin, and that exogenous ...
Daniel L. Stanton +5 more
wiley +1 more source
Photic Stimulation Study of Changing the Arterial Partial Pressure Level of Carbon Dioxide
, 1995 To investigate the effect of the level of baseline cerebral blood flow (CBF) on local CBF augmentation by activation, we have used positron emission tomography to measure regional CBF (rCBF) in 12 normal volunteers with and without photic stimulation ...
Eku Shimosegawa +11 more
core +1 more source
, 2004 It is well established that photic cues are used by the suprachiasmatic nucleus (SCN) to entrain circadian rhythms to the light/dark cycle, but the role of photic stimuli in the regulation of ultradian neuroendocrine rhythms is ill defined.
Davies, Jeffrey S. +2 more
core +1 more source
Ecology and Evolution, Volume 16, Issue 10, October 2026.Deep reefs (25–30 m) were expected to be climate havens for fish fleeing warming shallow waters near Egypt's Nile Delta—but the opposite was observed. As you head south, the reef habitat shifts from primary producers (algae) to filter‐feeding bryozoans, and fish abundance and diversity drop sharply.
Anat Tsemel +7 more
wiley +1 more source
The eyes of man as a photic bisensor system [PDF]
, 1982 Non-patterned photic stimulation of the eyes of human subjects was obtained by homogeneous illumination of the closed eyes. The subjects perceived a difference between the stimulation intensity of the left and of the right eye as a field of view ...
Fingal, J.A., Verheijen, F.J.
core +1 more source
Molecular and Cellular Underpinnings of Primary Hypertension: An Integrative Mechanistic Framework
Journal of Cellular Physiology, Volume 241, Issue 10, October 2026.ABSTRACT Hypertension is a highly prevalent clinical condition and a major contributor to global cardiovascular morbidity and mortality. Despite extensive research, its complex and multifaceted pathogenesis is yet to be fully elucidated. This paper explores the updated understanding of primary hypertension as a systemic disorder rather than an isolated
Dima Nasrallah +5 more
wiley +1 more source
Modeling brain resonance phenomena using a neural mass model.
PLoS Computational Biology, 2011 Stimulation with rhythmic light flicker (photic driving) plays an important role in the diagnosis of schizophrenia, mood disorder, migraine, and epilepsy.
Andreas Spiegler +4 more
doaj +1 more source
Preliminary trial of photic stimulation for premenstrual syndrome
Journal of Obstetrics and Gynaecology, 1997 In an open study 17 women with confirmed, severe and long-standing premenstrual syndrome used photic stimulation with a flickering red light, every day for up to four menstrual cycles. At the end of treatment prospectively recorded median luteal symptom scores were reduced by 76% (95% confidence interval 54-93, P < 0.001), with clinically and ...
D J, Anderson, N J, Legg, D A, Ridout
openaire +2 more sources
Journal of Cellular Physiology, Volume 241, Issue 10, October 2026.ABSTRACT Circadian rhythms orchestrate a host of biological processes in a time‐dependent manner to maintain homeostasis in response to exercise. Within this framework, Rev‐erb‐α, an intracellular nuclear receptor and transcriptional regulator, transcends its role in circadian rhythms to drive myogenesis, muscle remodeling, primary metabolism, and ...
Ivo Vieira de Sousa Neto +7 more
wiley +1 more source
Quantifying changes in EEG complexity induced by photic stimulation
, 2009 Objectives: This study aims to characterize EEG complexity, measured as the prediction error resulting from nonlinear prediction, in healthy humans during photic stimulation.
Nollo, G. +5 more
core +1 more source