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Related Concept Videos

Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

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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...
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Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response01:15

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Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
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Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

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Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
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Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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Stages of Sleep01:22

Stages of Sleep

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Sleep progresses through distinct stages, each characterized by specific brain wave patterns and physiological responses ranging from wakefulness to stages of non-rapid eye movement, known as non-REM, to rapid eye movement, referred to as REM. Understanding these stages helps in recognizing how sleep supports various bodily and cognitive functions.
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Disturbances in Heart Rhythm01:29

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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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Related Experiment Video

Updated: Feb 4, 2026

Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila
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Assaying Locomotor Activity to Study Circadian Rhythms and Sleep Parameters in Drosophila

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Sleep, Circadian Rhythms, and Epilepsy.

Joseph T Daley1,2, Jennifer L DeWolfe3,4

  • 1UAB Epilepsy Center, Department of Neurology, University of Alabama at Birmingham, 1719 6th Avenue South, 312 CIRC, Birmingham, AL, 35294, USA.

Current Treatment Options in Neurology
|September 28, 2018
PubMed
Summary
This summary is machine-generated.

This review explores the connection between sleep, circadian rhythms, and epilepsy. Findings show sleep disturbances and specific gene expression changes in epilepsy, suggesting new treatment targets for improved seizure control.

Keywords:
Circadian rhythmsEpilepsy surgeryNeurostimulationSleep activated seizuresSleep disturbances in epilepsy

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Epileptology

Background:

  • A significant link exists between sleep disturbances and epilepsy.
  • Circadian rhythms influence epilepsy manifestations and treatment outcomes.

Purpose of the Study:

  • To review recent findings on the interplay of sleep, circadian rhythms, and epilepsy.
  • To explore how these interactions affect epilepsy presentation and surgical outcomes.

Main Methods:

  • Literature review of recent studies on sleep, circadian rhythms, and epilepsy.
  • Analysis of findings from intracranial video EEG and responsive neurostimulator data.

Main Results:

  • Reduced CLOCK gene expression observed in the epileptogenic focus of refractory epilepsy patients.
  • Interictal epileptiform discharges show a nocturnal peak, lateralizing to the epileptogenic hemisphere during sleep.
  • Epilepsy surgery can enhance sleep quality and macrostructure.

Conclusions:

  • Sleep and epilepsy share complex associations, offering potential for novel therapeutic strategies.
  • Targeting sleep and circadian pathways may improve seizure control and patient quality of life.