Major Funding The Laura Moore Cunningham Foundation



Sleep: Glossary

A

adaptations
physical and behavioral characteristics that help animals survive in their habitats

B

blood pressure
the pressure of the blood moving through the veins and arteries
blue light
short-wavelength, high-energy light, the kind that brightens midday sunlight and computer screens

C

caffeine
a chemical found in substances like cola and coffee that causes people to feel more awake and alert
circadian rhythm
a cycle of rhythms in the body
committed
moved to
concentration
to focus the brain on a topic
coordination
balance, smooth movements
consolidate
to join together or combine
crepuscular
active at twilight or just before sunrise

D

Daylight Saving Time
turning the clocks ahead by an hour in the summer to take advantage of sunlight
dementia
an illness of the brain that involves severe decline of mental abilities
depression
feelings of severe sadness
deprivation
to be lacking - often to a serious level
diabetes
a serious disease in which the body cannot properly control the amount of sugar in your blood because it does not have enough insulin
discomfort
not comfortable
disruption
interruption
diurnal
most active during the day
drought
a time of no water or rain
drowsy driving
driving a vehicle without having had adequate sleep

E

economic
having to do with the system of making and using money
electronic devices
computers, TVs, games that run by electricity
encounter
come upon
endure
last
estivation
long sleep-like dormancy of an animal during a hot or dry period

H

hibernation
winter sleep
hormones
chemicals that direct the body to perform jobs
hyperactivity
extremely active

I

immune system
the system of the body that fights infection and illness
insomnia
inability to sleep
insulin
a hormone made by your pancreas, it turns sugar into energy
interrupt
disturb
irrational
not usual - unique
irritable
grouchy or cranky, easily bothered or angered

J

jet lag
the confusion that happens to the body clock when traveling through many time zones

L

limbic system
the part of the brain involved in our emotional responses and mood
long term memory
memory that we hold on to for a long time

M

melatonin
a hormone made by the pineal gland that helps control your sleep and wake cycles
mucous
slimy material similar to spit

N

NREM
non rapid eye movement - a time before or after rapid eye movement occurs
narcolepsy
a condition that causes people to fall asleep at random
night terrors
fearful period while sleeping
nightmares
scary dreams
nocturnal
most active at night

O

obesity
condition of being extremely overweight

P

paralyzed
unable to move
pineal gland
an organ that releases hormones for sleep
pneumonia
and illness of the lungs that causes difficulty breathing, coughing
predominant
mostly
prefrontal cortex
the part of the brain involved with problem-solving, future planning, calculating and making decisions

R

REM
rapid eye movement - a deep sleep
randomness
not in an organized way
reaction times
the time it takes to respond to an event
regulated
controlled
rejuvenate
to return to normal, refresh
relaxing
less tense
reorganize
change and adjust
restoring
to return to original
routines
habits

S

sleep apnea
a sleep disorder where breathing temporarily stops
sleep deprived
to lack enough sleep for good health
sleep-eating disorders
to get up and eat while sleeping
sleep/wake homeostasis
a natural balance between being awake and asleep
sleepwalking
to get up and move around while sleeping
sleep study
overnight exam where doctors monitor the patient while they are sleeping to identify what is happening in the brain and body
snoring
a deep noise made while sleeping
Standard Time
the time kept during the winter
stimulated
activate or send a message to perform a function
stress
anxiety or tension

T

temporary
not permanent - for a short time
time zones
a geographic region within which the same standard time is used

U

unconscious
a state in which the person is unaware of and unresponsive to the environment

W

well-being
comfortable and happy

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