Sleep and Cognitive Performance: The Neuroscience of What Sleep Deprivation Does to Your Brain
Sleep loss slows attention first and reasoning last. Here is what the studies found on six-hour nights, catch-up sleep, extra sleep and caffeine.
Working Memory: How It Works and How to Improve It
Working memory holds about four things at once. Here is what overloads it, which habits help, and what the evidence says on apps and supplements.
