
The prefrontal CORTEX
The Big Bang Theory Season 7, Episode 12

but since my cerebral CORTEX is
twiddling its proverbial thumbs,
The Big Bang Theory Season 7, Episode 20

up your prefrontal CORTEX.
The Big Bang Theory Season 7, Episode 12

When your prefrontal CORTEX
fails to make you happy,
The Big Bang Theory Season 5, Episode 1

So says your prefrontal CORTEX.
The Big Bang Theory Season 6, Episode 3