"""Yu [...] also noted that their experiments only tracked the brain’s activity for one or two hours. The researchers can’t yet rule out the possibility that re

"""Yu [...] also noted that their experiments only tracked the brain’s activity for one or two hours. The researchers can’t yet rule out the possibility that reassociation is a fast interim way for the brain to learn new tasks; over a longer time period, realignment or rescaling might still show up.""" I know that for musical instrument practice the common advice I've read is that it is better to practice 30 minutes every day rather than a 3½-hour session at the weekend in part because what you learn actually sinks in when you are resting. Maybe the realignment or rescaling happened when the monkeys slept?