Tag Archives: rhythms

The Effects of Meditation on Heart Rate Variability

Meditation, especially slow breathing, is known to influence the heart rate variability (HRV). Researchers in Taiwan studied the effects of inward attention during meditation on HRV (Wu and Lo, 2008). Inward attention is a critical process for achieving the state … Continue reading

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The Database of Biological Rhythms (DBBR)

The Database of Biological Rhythms (DBBR) The Chronobiology Portal: Chronobiology, Chronotherapy, Circadian Rhythms, and More Journals about Biological Rhythms and Chronobiology   Biological Rhythm Research Chronobiology International Journal of Biological Rhythms Journal of Chronotherapy and Drug Delivery Journal of Circadian … Continue reading

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Circadian Rhythms and Stem Cell Chronobiology

Circadian rhythms are biological temporal patterns that oscillate in a 24-hour time cycle. Many physiological processes and behavioral variations are controlled by the rhythms, such as the daily sleep-waking cycle. The secretions of hormones and cytokines such as melatonin and … Continue reading

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Lipidomics, Circadian Rhythms, and Chronobiology

Lipids are essential for biological mechanisms, from serving as signaling molecules to maintaining cellular processes. They are fundamental elements that compose cellular membranes. They are also the basis of energy storage. In addition to all of these functions, lipids are … Continue reading

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Negative Impacts of Electronic Devices on Sleep

The decrease of sleep time and quality in recent decades has led to unhealthy lifestyle and negative impacts on health and performances. A recent survey of more than 1,500 adults in the U.S. showed that about ninety percent of them … Continue reading

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The Effects of Melatonin on Sleep Disorders and Pediatric Problems

Melatonin is a hormone produced by the pineal gland. It is chronobiotic and crucial in the regulation of the circadian clock. As an antioxidant and free radical scavenger, it has many important functions such as anti-inflammation (Bruni et al., 2014). … Continue reading

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Depression, Anxiety, and Abnormal Diurnal Cortisol Patterns

The functional alterations of the hypothalamic-pituitary-adrenal (HPA) axis have been related to not only major depression disorder (MDD) and anxiety disorders, but also depression-associated physical diseases (Doane et al., 2013; Jarcho et al., 2013). Indices that can be used to … Continue reading

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