Keywords: اختلالات بیش فعالی کمبود توجه; 5-HT; 5-hydroxytryptamine; 6-OHDA; 6-hydroxydopamine; AC; anterior cingulate; ADHD; attention deficit hyperactivity disorders; AES; Apathy Evaluation Scale; AI; Apathy Inventory; AS; Apathy Scale; BG; basal ganglia; D2R/D3R; D2/D3 dopamine receptors; D2R;