CPD01. Circadian Phase Delay
The biological shift in teens where the pineal gland delays natural melatonin release by ~2 hours (sleepiness arrives 10:30–11:00 PM).
MEL02. Melatonin Suppression (SCN)
Blue light (~460 nm) hits retinal melanopsin receptors, signalling the Suprachiasmatic Nucleus to halt melatonin release.
DEBT03. Sleep Debt (Cumulative Deficit)
The mathematical shortfall between needed sleep (8.5–9.5 hrs) and actual sleep. Accumulates and compounds daily: (9.0 − actual) × nights.
SJ04. Social Jetlag
Shifting the sleep window by >2 hours on weekends (midpoint vs midpoint) — disrupts the circadian clock instead of erasing debt.
SWS05. Slow-Wave Sleep (Stage 3 NREM)
Deep restorative sleep where Human Growth Hormone (HGH) is released for muscle repair and physical growth — the athlete's stage.
REM06. REM Sleep (Memory Consolidation)
Late-night dream stage that cements skills and academic facts into long-term memory. Short nights cut these cycles first.
INERTIA07. Sleep Inertia ("Period 1 Fog")
The 30–90 minute state of impaired processing and grogginess immediately after waking.
RT2508. The Sleep Debt Reaction Rule (20%–25% Slower)
3+ consecutive nights under 6 hrs slows neurological reaction time by 20%–25% (cognitive impairment equivalent to 0.05% BAC). Attention lapses (microsleeps missing a stimulus >500 ms) surge up to 300%. Impaired reaction = baseline × 1.20 to 1.25.
STIM09. Pre-Sleep Stimulus Control
Powering down interactive screens 30–60 min before bed so body temperature drops and melatonin can rise.
5D10. 5 Dimensions of Health Interlock
A physical deficit (sleep loss) cascades into mental, emotional, and social impairment — the dimensions are one system.
HYG+ Utility: Sleep Hygiene (not on Quiz 1)
Field code for controllable routine factors: caffeine timing (none after noon), wind-down routine, consistent wake time, room environment.
TIB≠TST+ Field Rule: Time-in-Bed ≠ Time-Asleep
Onset delays and night wakings mean hours in bed overstate actual sleep. Always audit to sleep onset, and subtract wakings.
Keep this sheet in your Room 8 binder beside the Morgan ledger. The Code Bank is the direct study bank for Quiz 1; your written audit (Deliverable 20) is due before Class 3.