Circadian Sleep Debt & Cognitive Decay Simulator Borbély Model

Physiological modeling of Process S (Homeostatic Debt) & Process C (Circadian Rhythm)

Process S (Homeostatic Debt) Process C (Circadian Drive) Cognitive Alertness Curve
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Scrub Time: Hour 14.0h

Real-Time Physiology Telemetry

Avg Reaction Delay
480 ms
Baseline: ~250ms
Microsleep Hazard
High (74%)
Vulnerability Window
Min Alertness
32 %
Lowest phase capacity
Peak Process S
0.88 S-Units
Max homeostatic load
2.0 hrs
4.0 hrs

Recovery Trajectory Projection

Required 8h Nights to Clear Debt: 3 Days

Based on standard homeostatic discharge dynamics ($k_d = 0.21 \text{ h}^{-1}$), returning to baseline alertness after extreme 2-hour sleep shifts requires cumulative slow-wave sleep cycles across consecutive uninhibited night rests.

The Physiological Reality of 0–3 Hour Sleep Schedules

Process S (Homeostatic Debt) Sleep pressure builds exponentially during wakefulness ($S_t = 1 - (1-S_0)e^{-t/\tau_w}$) and decays during sleep. Under 2-hour sleep, discharge is truncated, leaving massive residual debt compounding daily.
Process C (Circadian Oscillator) Controlled by the suprachiasmatic nucleus (SCN), alertness follows a 24-hour sinusoidal wave independent of sleep. When Process C trough aligns with peak Process S, cognitive function collapses.
Cognitive Latency & Involuntary Microsleeps When alertness drops below 35%, reaction times delay by 200–300ms (equivalent to 0.08% BAC intoxication), triggering uncontrollable 2–15 second microsleep episodes during continuous tasks.
Proof Target: Active Simulation Avg Delay: 480 ms Microsleep: High (74%) Min Alertness: 32% Peak S: 0.88 Recovery: 3 Days
Borbély Model Engine Verification Active