CIRCADIAN HEALTH GLOSSARY

Words & Definitions

A

Action Spectrum

Advanced Sleep Phase Syndrome (ASPS)

Afternoon Energy Dip

B

Biological Rhythms

Blue Light

Blue Light Hazard

Body Clock

C

Candela (Cd)

CBTmin (Core Body Temperature Minimum)

Chronobiology

Chronobiotic

Chronomedicine

Chronotherapy

Chronotype

Circadian Dead Zone

Circadian Diet

Circadian Health

Circadian Misalignment

Circadian Rhythm

Core Body Temperature (CBT)

Cortisol

D

Daylight Exposure

Deep Sleep

Delayed Sleep Phase Syndrome (DSPS)

DLMO (Dim Light Melatonin Onset)

Dormancy

E

Electroencephalogram (EEG)

Electrooculogram (EOG)

Entrainment

Evening Peak

Excessive Daytime Sleepiness (EDS)

H

Homeostatic Sleep System

I

Insomnia

Intrinsically Photosensitive Retinal Ganglion Cells (ipRGCs)

Irradiance

J

Jet Lag

L

Lark

Light Pollution

Lux

M

MCTQ (Munich Chronotype Questionnaire)

M-Edi (Melanopic Equivalent Daylight Illuminance)

Melanopic Lux

Melanopsin

Melatonin

Midpoint of Sleep

Minima

Morning Peak

N

Narcolepsy

Night Owl

Non-24-Hour Sleep-Wake Disorder (Non-24)

P

PER1 Protein

Peripheral Circadian Clocks

Phase Advancement

Phase Delay

Phase Response Curve (PRC)

Phase Shift

Photobiological Safety

Photoperiod

Photoperiodism

R

REM and NREM

S

Seasonal Affective Disorder (SAD)

Serotonin

Shift Work

Sleep

Sleep Debt

Sleep Hygiene

Sleep Inertia

Sleep Need

Sleep Pressure

Sleep Regularity

Sleep-Wake Cycle

Slow-Wave Sleep

Social Jet Lag

Suprachiasmatic Nucleus (SCN)

U

Ultradian Rhythm

W

Wind-Down

Winter Blues

Z

Zeitgeber