Neuroscience

Time of day affects global brain fluctuations

As the day progresses, the strength of the brain's global signal fluctuation shows an unexpected decrease, according to a study published on February 18 in the open-access journal PLOS Biology by Csaba Orban and a multi-disciplinary ...

Diabetes

Could resetting our internal clocks help control diabetes?

The circadian clock system (from the Latin "circa diem," about a day) allows organisms to anticipate periodic changes of geophysical time and to adjust to those changes. Nearly all cells comprise molecular clocks that regulate ...

Cardiology

Cause of ventricular tachycardia determines treatment

Dear Mayo Clinic: Recently, I was diagnosed with ventricular tachycardia, but doctors said a cause cannot be determined. What usually causes this problem? Does knowing the cause make a difference in treatment?

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