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The Brain : Learning and Memory
CHAPTER 1. MEMORIES ARE MADE OF THIS Memories aren’t stored in just one part of the brain. Different types are stored across different, interconnected brain regions. For explicit memories – which are about events that happened to you (episodic), as well as general facts and information (semantic) – there are three important areas of the brain: the hippocampus, the neocortex and the amygdala. Implicit memories, such as motor memories, rely on the basal ganglia and cerebellum. Short-term working memory relies most heavily on the prefrontal cortex. WHERE ARE MEMORIES FORMED AND STORED? THE NEED FOR SLEEP WHILE WE SLEEP, the hippocampus and neocortex take part in a carefully choreographed interaction during which the hippocampus replays recent events. The same neurons active in the hippocampus during an experience become activated again during slow-wave sleep, also known as deep sleep. This occurs repeatedly, helping to update the neocortex about what needs to be stored. Replay occurs during sleep, so if you aren’t getting enough sleep, you aren’t letting your brain consolidate memories. SLEEP HELPS RETAIN MEMORIES. “ . . .so if you aren’t getting enough sleep, you aren’t letting your brain consolidate memories.” DID YOU KNOW?