"Sleep-deprived people come up with fewer original ideas..." #readingToday
Sleep-deprived people come up with fewer original ideas and also tend to stick to old strategies that may not continue to be effective. All of these processes rely on the front-most part of the brain, the prefrontal cortex, so the fact that this brain region is less active than usual after sleep deprivation could partially explain these types of impairments. Surprisingly, high-level processes that require logical deduction, such as IQ tests and critical reasoning, are performed more or less normally even after two full nights without sleep. This finding suggests that such tasks don't actually rely on the prefrontal cortex as much as we previously thought.
(Moon+ Reader Pro v2.3.3, The Secret World of Sleep: The Surprising Science of the Mind at Rest (MacSci))