Do you believe during sleep your brain takes rest? You are wrong! A team of Researchers in University of Lubeck, Germany, has found that memory could be enhanced during sleep if the person’s brain is stimulated with a mild electric current during a certain phase of the sleep cycle. Sleep basically characterized into two phases – a period of heightened activity within the cortex when dreaming usually occurs and a period of relatively little action, mostly consisting of slow synchronized waves that travel across the surface of brain. According to the scientists, this is the phase where electrical simulation could be used to remember facts. While the improvement measured may be very small, about 8%, the fact that the experiment on ‘high performers’ suggests that the improvement is significant.