Understanding the Stages of Sleep: A Psychophysiological Approach, Study notes of Psychology

Download Understanding the Stages of Sleep: A Psychophysiological Approach and more Study notes Psychology in PDF only on Docsity! SLEEP 1) Pewee} Le PSYCHOPHYSIOLOGY PSYCHOPHARMACOLOGY NEUROANATOMY HOW DO WE DEFINE SLEEP? Behavioral & Psychophysiological Measures ACL ea ices itl iyael iN The International 10 — 20 System-most scientists use  ft @uGe Mich 24=aa)) ale unicmsts2 uaeeu—icmagEsa 4 490 eno ago tea 2a aa 2ape © sna eB do Er) CREE) AUG MAGNITUDE CuU ee Delta Theta" Alpha Beta tases 0000 - ©0000 - ©0680 ae EEG “A STRIPPER” The International 10 — 20 System EEG-/0/20 SYSTEM LOCANo) EEG G- ¥ a - 7- et J STAGES OF SLEEP ABOUT 90 MINUTES • STAGE W DROWSY WAKEFULNESS • ALPHA WAVES = 8 – 12 HZ • NONREM • STAGE 1 ”LIGHT SLEEP” • STAGE 2 10 MINUTES CAN WALK AND TALK DURING STAGES ONE THROUGH FOUR • ”TRANSITION STAGE” • SLEEP SPINDLES & THE MEDIAL THALAMUS • STAGE 3 FIRST DELTA APPEARANCE = 1 – 4 HZ • STAGE 4 GREATER THAN 50 % DELTA • “HEAVEN” • WE GO INTO WHAT EVER SLEEP WE ARE DEPRIVED OF MOST • REM • RAPID EYE MOVEMENT & DREAMING • “PARADOXICAL SLEEP”n • STAGE 4 GREATER THAN 50 % DELTA REM SLEEP SENSORY & MOTOR BLOCKADE • Efferent • From Motor Cortex • To Brainstem RAS • Afferent • From Receptor • To Brainstem RAS • Results • Paralysis • Muscle Twitch • Illusory Mismatch REM SLEEP SENSORY & MOTOR BLOCKADE • Do Wake to “Significant Events” • Mother to Sound of Baby Crying • Picking Georgia Fleas off of “Bun Bun” • REM Sleep Disorder • Narcolepsy REM SLEEP • AUTONOMIC NERVOUS SYSTEM ”STORM” • HUMANS - 25% OF TIME, 5 EPISODES • INFANTS 50% OF SLEEP TIME • STUDENTS - REQUIRE MORE REM • SCHIZOPHRENIA - REM DISORDER? • BIPOLAR - REM CYCLES • ELDERLY - STAGE 2, LESS DEEP SLEEP RESEARCH TECHNIQUES • 1. MANIPULATE BEHAVIOR • OBSERVE EFFECTS ON SLEEP • 2. MANIPULATE SLEEP • OBSERVE EFFECTS ON BEHAVIOR PRIMARY RESEARCH AREAS • 1. GENERAL SLEEP DEPRIVATION • 2. REM SLEEP DEPRIVATION • 3. STAGE IV DEPRIVATION REM DEPRIVATION • KNOCKS OUT ACTIVE AVOIDANCE • LEAVES ESCAPE INTACT • VALIUM OR TRANQUILIZERS SAFE SHOCK CS Anxiety & REM Sleep College Men Circumcision Film Recorded Anxiety Allowed REM Prevented REM Reduced Anxiety No Anxiety Reduction GENERAL SLEEP DEPRIVATION • LAPSE IN ATTENTION • INCONSISTENT COGNITION • FATIGUE • TENDENCY TO WITHDRAW • REALITY DISTORTION • TRUCK DRIVERS • ALTERED DEPTH PERCEPTION • MILD HALLUCINATIONS SLEEP AS AN ACTIVE PROCESS • Cajal • Glia Migrate Into Synaptic Gap • Bremer 1937 (1st Human EEG on his Son) • Sleep = “Inactivation of Sensory Input” • Cerveau Isole = Midcollicular Transection • Permanent Sleep • Encephale Isole =Caudal End of Medulla • Leaves Trigeminal Nerve Input Intact • Normal Sleep Wake Episodes Bremer 1937 • CERVEAU ISOLE • “Permanent Sleep” • ENCEPHALE ISOLE • “Almost Normal” • Sleep/Wake Episodes • Trigeminal Nerve is Intact • Somatosensory from Head Botini • Questioned Bremer’s Conclusions • Used • Midpontine Transection (Pretrigeminal) • Results • Insomnia!!! • Discovered Two Areas • Pontine Reticular Formation • Raphe