Unit 1b:Sleep

Sleep Cycle

Reoccurring stages of sleep. 90 minute cycle

NREM-1

Light sleep;easily awoken → alpha waves. Can experience fake sensory experiences

NREM-2

Fully asleep→ Theta waves with sleep spindles. Random short bursts of activity and tall

NREM-3

Deep sleep- Delta waves

REM Sleep

Body is relaxed but brain is active as if its awake. (Paradoxical Sleep). Vivid dreams occur,longer and more frequent in night

REM Rebound

If deprived of sleep a person will spend more time in REM the next time they sleep

What is the role of the hypothalamus in sleep?

Hypothalamus role in sleep is to produce melatonin once light decreases

Suprachiasmatic

Regulates most circadian rhythms in the body.When it senses no light, it sends a message to the pineal gland to produce melatonin

Circadian Rhythm

Biological clock that regulates our mood,temperature, and arousal through a 24 hour cycle

Daylight Savings Time

We tend to fall asleep later during D.S.T. which results in sleep loss

Activation Synthesis

Dreams are merely a result of neural activity during sleep, which our brain crafts into a narrative

Memory Consolidation Theory

Dreams are the expression of a person’s thoughts, allowing them to convert nevessary information into long-term memory

Insomnia

The difficulty to stay and to fall asleep. Increases in depression

Night Terrors

Sleep disorder characterized by high arousal and an appearance of being terrified, occurs during NREM-3 sleep and aren’t remembered

Sleep Apnea

A sleep disorder characterized by temporary cessations of breathing during sleep

Cocaine

Stimulant,psychoactive drug,increased pulse rate, dilated pupils, euphoria, and self confidence

Caffeine

Stimulant, increases energy, speeds up body processes

Heroin

Decrease mood and arousal, reduce nerual activity, and increases relaxtion

Lsd

Distort your perception, impair memory,false sensory hallucinations, and feelings of relaxation

Addiction

A complex condition characterized by compulsive drug use

Physical Dependence

When your body doesnt function normally due to withdrawals without a drug. Ex: Headaches due to not having coffee

Psychological Dependence

No withdrawal symptoms but still feel like you need something

What is the Biopsychosocial to drug use?

Would be to find the biological, psychological, and social factors to why one uses drugs