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ADHD stimulants boost focus by increasing alertness and motivation, not attention, a study finds.
Stimulant medications for ADHD improve focus not by directly enhancing attention, but by increasing norepinephrine to combat sleep deprivation and boosting dopamine to make unengaging tasks feel more tolerable and slightly rewarding.
A study using fMRI data from over 5,700 children found these drugs activate brain regions linked to arousal and reward, not attention circuits, suggesting improved focus is a secondary effect of greater alertness and motivation.
The findings, published in Cell on December 24, 2025, may lead to brain scans that identify children most likely to benefit, helping reduce overprescription amid rising stimulant use.
Según un estudio, los estimulantes del TDAH aumentan la concentración al aumentar el estado de alerta y la motivación, pero no la atención.