Rhythms

Types of Rhythms

Circadian: about 24 hoursUltradian: less than 24 hours

Core Body Temperature

Variation is related to:

Alertness Jet lag

Zeitgeber: time cueFree run rhythm about 25 hours

Rat Free Run

Pineal Gland

Secretes Melatonin

Amount affected by:Light (suppression)Magnetic fields

Title

Title

Title

Alertness

Title

90 Minute Cycles

Cerebral dominance mental rotation fantasy

Title

REM 1

Stages of Sleep – Awake, alertStages of Sleep – Awake, alert

EEG Recording

Beta waves

Based on Hauri, 1982

Stages of Sleep – Relaxed, drowsyStages of Sleep – Relaxed, drowsy

EEG Recording

Alpha waves

Based on Hauri, 1982

Stages of Sleep – Stage 1Stages of Sleep – Stage 1

EEG Recording

Theta (6 CPS)

Based on Hauri, 1982

Stages of Sleep – Stage 2Stages of Sleep – Stage 2

EEG Recording

Sleep Spindle

Based on Hauri, 1982

Stages of Sleep – Stage 3Stages of Sleep – Stage 3

EEG Recording

Delta (1 CPS)

Based on Hauri, 1982

Stages of Sleep – Stage 4Stages of Sleep – Stage 4

EEG Recording

Delta (1 CPS)

Based on Hauri, 1982

Title

Sleep Disorders

InsomniaNarcolepsyApnea

THE END