Related Experiment Video

Updated: Apr 17, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
08:36

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments

Published on: August 8, 2019

13.0K

[Model of control of diurnal melatonin secretion by the solar radiation]

A V Leonidov

    Biofizika
    |February 25, 2015
    PubMed

    More Related Videos

    Circadian Entrainment of Drosophila Melanogaster07:12

    Circadian Entrainment of Drosophila Melanogaster

    Published on: June 3, 2020

    4.9K
    Human Circadian Phenotyping and Diurnal Performance Testing in the Real World10:16

    Human Circadian Phenotyping and Diurnal Performance Testing in the Real World

    Published on: April 7, 2020

    9.2K

    Related Concept Videos

    Circadian Rhythms and Gene Regulation02:19

    Circadian Rhythms and Gene Regulation

    The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
    4.7K
    Circadian Rhythms and Gene Regulation02:19

    Circadian Rhythms and Gene Regulation

    2.5K
    Management of Insomnia01:19

    Management of Insomnia

    The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
    803
    The Pineal Gland01:02

    The Pineal Gland

    The pineal gland, a diminutive endocrine structure named for its pinecone-shaped appearance, is situated atop the third ventricle within the diencephalon region of the forebrain. This gland, composed of secretory cells known as pinealocytes arranged in compact cords and clusters around dense particles of calcium salts, plays a pivotal role in hormonal regulation.
    The primary secretion of the pineal gland is the hormone melatonin, derived from serotonin. The concentration of melatonin in the...
    8.1K
    Biological Clocks and Seasonal Responses02:45

    Biological Clocks and Seasonal Responses

    The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
    42.1K
    Major Hormones and Their Functions01:27

    Major Hormones and Their Functions

    Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
    Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
    3.5K