neuroscience letters

(University of California - Los Angeles) Got memory problems? If you suffer from obstructive sleep apnea, your brain could be to blame.

For the first time, UCLA researchers have discovered that people with sleep apnea show tissue loss in brain regions that help store memory.

Reported in the June 27 edition of the journal Neuroscience Letters, the findings emphasize the importance of early detection of the disorder, which afflicts an estimated 20 million Americans.

(Rensselaer Polytechnic Institute) Like a wristwatch that needs to be wound daily for accurate time-telling, the human circadian system -- the biological cycles that repeat approximately every 24 hours -- requires daily light exposure to the eye's retina to remain synchronized with the solar day.

In a new study published in the June issue of Neuroscience Letters, researchers have demonstrated that when it comes to the circadian system, not all light exposure is created equal.