“…Moreover, a core treatment for ADHD are various indirect dopamine agonists such as methylphenidate, methamphetamine, and nicotine, which as detailed above, have clear effects on interval timing (e.g., Conners et al, 1996;Levin et al, 1996Levin et al, , 1998Meck, 2007;Noreika et al, 2013). Dopaminergic signaling is involved in numerous diseases and neurological/ psychiatric conditions, such as depression, bipolar disorder, dystonia, drug addiction, Huntington's disease, obsessivecompulsive disorder, stuttering, Tourette's syndrome(e.g., Allman & Meck, 2012;Gu et al, 2011;Linazasoro & van Blercom, 2007;Ptáček et al, 2011;Singer et al, 2002). Furthermore, many commonly prescribed drugs powerfully modulate dopaminergic signaling.…”