Andrew Huberman· PhD
the general theme is that they tend to increase overall levels of arousal and wakefulness which leads to decreased levels of hyperactivity impulsivity and focus and on the face of it that might seem counter-intuitive raise arousal to reduce hyperactivity and impulsivity indeed that's the case because these compounds because they act on neuromodulator systems like dopamine and norepine epinephrine are effective in creating neuroplasticity they change the strength of the connections in the neural circuits of the brain that lead to states of heightened focus and reduced impulsivity and reduced hyperactivity