Glia

When epileptic patients suffer seizures, their brain is undergoing repetitive and excessive neuronal firing. But what triggers this has stumped scientists for years. Now, researchers have used fluorescence calcium sensors to track astrocytes' role in epileptic seizures, finding that that astrocyte activity starts approximately 20 seconds before the onset of epileptic neuronal hyperactivity.

Have you ever studied hard for a test the night before, only to fail miserably the next day? Alternatively, you may have felt unconfident after studying the night before when, to your astonishment, you recall effortless the content on test day. This discrepancy may be down to the separate and independent way in which our brain processes short- and long-term memory, Tohoku University researchers have revealed.