Timing: Confirmed: PreSMA + basal ganglia: milliseconds, Right DLPFC, seconds. But in ADHD, DLPFC may be used to compensate for poorly functioning PreSMA. Now to find it it uses Right DLPFC or both right and left DLPFC for timing.
“The preSMA/SMA and the basal ganglia are suggested as the common neural substrates for temporal processing across sensory modalities and sensory structures for explicit timing within the subsecond range.” (Common neural mechanisms for explicit timing
in the sub-second range, Lynn Y.L. Shiha)
“The right dorsolateral prefrontal cortex is essential in seconds range timing, but not in milliseconds range timing:”
H Z Yin”