Psychology Week 8 Lecture Notes: Sleep
Psychology Week 8 Lecture Notes: Sleep 1004
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This 3 page Class Notes was uploaded by Margaret Vaughan on Friday October 14, 2016. The Class Notes belongs to 1004 at Virginia Polytechnic Institute and State University taught by Benjamin DeVore in Fall 2016. Since its upload, it has received 6 views.
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Date Created: 10/14/16
Psychology Lecture Notes SLEEP Sleep defined: Behavior and psychophysiology 1. EEG RECORD 1. International 1020 system 2. A basic sleep study 1. EEG— electroencephalogram (most prominent) 2. EMG— electromyogram (action potentials in muscles) 3. EOG— electrooculogram (action potentials in eye muscles) 4. Other measures as needed “Madonna Seizures” 1. right temporal lobe pathology 2. Social anarchy, inappropriate behavior Low voltage, high frequency— normal (awake) High voltage, low frequency— not normal (sleeping) STAGES OF SLEEP Normal: 1. Stage W: Drowsy wakefulness Alpha waves= 8-12 HZ 2. Stage 1: “light sleep” (voltage increasing, frequency decreasing) 3. Stage 2: 10 minutes “transition stage” Sleep spindles & The medial thalamus 4. Stage 3: First Delta Appearance= 1-4 HZ 5. Stage 4: Greater than 50% Delta 6. REM: Rapid eye movement & Dreaming “paradoxical sleep" REM SLEEP SENSORY & MOTOR BLOCKADE Efferent: 1. From motor cortex 2. To brainstem RAS Afferent: 1. From receptor 2. To brainstem RAS Results: 1. Paralysis 2. Muscle Twitch 3. Illusory Mismatch REM SLEEP 1. Do wake to “significant events” 1. mother to sound of baby crying 2. Psychopathology Characteristics 1. Narcolepsy 3. Primary vs. Secondary Impotence & Arsenic CHARACTERISTICS NON-REM Sleep 1. Move Freely 2. BP: Low, steady 3. HR: Slow, steady 4. Respiration: Slow and steady 5. No REM 6. Bodily Restoration 7. Metabolic House Cleaning (sleep walking, REM Sleep 1. Inhibited movement e.g., muscle twitch 2. BP: Highly variable 3. HR: Fast & Irregular 4. Respiration: Fast and irregular 5. REM 6. Learn & Memory 7. Emotion & coping REM SLEEP Autonomic Nervous System “short” 1. Normal Humans: 25% of time, 5 episodes per night 2. Infants: 50% of sleep time 3. Students: Require more REM 4. Schizophrenia: REM Disorder? 5. Bipolar: REM cycles 6. Elderly: Stage 2, Less deep sleep within the same time frame BILL DEMENT 1940s and 1950s Anxiety and REM sleep 1. REM reduces anxiety SLEEP DISORDERS 1. Narcolepsy 1. Sleep attacks, Cataplexy (body paralysis), Hallucinations. 2. Night Terrors 3. Somnambulism 1. Sleep walking 4. Sleep Apnea 1. Snoring 5. Sudden Infant Death Syndrome 6. Bruxism 1. Grinding your teeth at night 2. Stress related: Stage one and two sleep 7. Enuresis 1. Bed wetting ————————————————————————— Midterm Split (Dr. Geller from here on out)
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