Relationship between sleep and memory/ learning

I was always amazed at the relationship between sleep and memory/ learning. A good quality sleep always induced a sense of clarity in me. Some hectic days, my brain was processing a lot of information. Those were the days when I used to read a ton of things for my medical examinations.
Those processing during sleep: was my brain processing information into long term memory?
Most probably it is true. Even the present research concludes that a good quality sleep enhances long term memory and learning. Today I just stumbled upon this TedEx video in Youtube. Hope you will all enjoy this. Cheers.