
You need your sleep for your COGNITIVE
processing to perform at optimum levels.
The Big Bang Theory Season 2, Episode 6

Impaired COGNITIVE function.
The Big Bang Theory Season 3, Episode 14

could be sharpening
our COGNITIVE processes.
The Big Bang Theory Season 10, Episode 19

...which is required for COGNITIVE
reasoning, including scientific inquiry...
The Big Bang Theory Season 4, Episode 3