Internal Clock 2D: The Pacemaker–Accumulator Model of Time Perception

Your subjective sense of "how long that felt" is not read off a wall clock — psychology's scalar-timing theory models it as a pacemaker oscillating in the gamma band, gated by attention, filling an accumulator whose count is compared against a calibrated reference rate. This dashboard renders all three stages as flat, legible 2D panels: a pulsing pacemaker core behind a closing attentional iris, a scrolling strip chart of raw pulses versus the thinner stream that actually clears the gate, a draggable accumulator ring chasing a comet of transmitted pulses, and two race bars — while three sliders (pacemaker frequency, attentional gate, arousal/heart-rate multiplier) let you speed the internal clock up or starve it and watch perceived duration visibly pull ahead of or fall behind real elapsed time.