News tagged with circadian rhythms

The rhythm of everything

Dawn triggers basic biological changes in the waking human body. As the sun rises, so does heart rate, blood pressure and body temperature. The liver, the kidneys and many natural processes also begin shifting ...

Jun 18, 2013
popularity 5 / 5 (1) | comments 1 | with audio podcast

Cell death in retina helps tune our internal clocks

(Medical Xpress)—With every sunrise and sunset, our eyes make note of the light as it waxes and wanes, a process that is critical to aligning our circadian rhythms to match the solar day so we are alert during the day and ...

Mar 05, 2013
popularity 5 / 5 (1) | comments 0 | with audio podcast

Weathering the winter blues

The holidays are over and there's a calendar full of cold, gray days ahead. Some of us experience the "winter blues" and others experience a more serious kind of depression like seasonal affective disorder (SAD). It can bring ...

Jan 24, 2013
popularity 4 / 5 (2) | comments 1

Researchers examine the neuroscience of mental fatigue

We all perhaps know the feeling of mental exhaustion, but what does it mean physiologically to have mental fatigue? A new study carried out using brain scans could help scientists uncover the neurobiological mechanisms underlying ...

Dec 10, 2012
popularity 4 / 5 (2) | comments 0