When the eyes are open, visual information flows from the retina through the optic nerve and into the brain, which assembles this raw information into objects and scenes. Scientists have previously ...

A good night's sleep helps us remember recently learned information, "engraving" our memories. This is also true for animals, as remembering, for example, the location of food resources is essential ...

Scientists often use blood flow in the brain as a stand-in for neural activity. Generally, increases in neural activity are accompanied by increases in blood flow. But an array of studies over the ...