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. Author manuscript; available in PMC: 2020 Feb 12.
Published in final edited form as: Phys Rev E Stat Nonlin Soft Matter Phys. 2013 May 29;87(5):052717. doi: 10.1103/PhysRevE.87.052717

FIG. 1. (Color online) Accurate and time-scale invariant interval timing.

FIG. 1.

(A) The response rate of rats timing a 30s interval (left) or 90s interval (right) overlap (center) when normalized by the maximum response rate (vertical axis), respectively, the criterion time (horizontal axis); redrawn from [8]. (B) Time-scale invariance in human subjects for 8s and 21s criteria; redrawn from [10]. (C) Systemic cocaine (COC) administration speeds-up timing proportional (scalar) to the original criteria 30s and 90s; redrawn from [8]. (D) The hemodynamic response associated with a subject’s active time reproduction scales with the timed criterion, 11s v. 17s; redrawn from [14].