My bet is default mode network was working overtime. Barely aware being hungover, going in and out of dreamland and “ugh my head”, prefrontal cortex just not activated much,
add to it the more dense connectivity in white matter in the default mode network for chronic alcohol use in young adults,
it’s very possible that that “state” helped him out rather than being a detriment IN THE SHORT TERM.
but if that’s chronic, he’ll pay for it and burn out.
Alterations in White Matter Microstructure and Connectivity in Young Adults with Alcohol Use Disorder