it's not on Urban Dictionary...
I think I've managed to coin (or co-opt from shared mindspace) a new term that actually has some merit.
psy-chlo-tron (SI-klo-tron) noun, deriv. "cyclotron": That spinning, roiling space behind the eyes in multi-tasking types where cogitation on a given subject or subjects never truly ceases, but is no longer an immediate topic. Often with new insights on the subject(s) being emitted later at seemingly random times. c.f. "back-burner", sleep on it.
psy-chlo-tron (SI-klo-tron) noun, deriv. "cyclotron": That spinning, roiling space behind the eyes in multi-tasking types where cogitation on a given subject or subjects never truly ceases, but is no longer an immediate topic. Often with new insights on the subject(s) being emitted later at seemingly random times. c.f. "back-burner", sleep on it.