Lecture 4 notes, need to know for test
Lecture 4 notes, need to know for test PSY 205 - M001
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This 7 page Class Notes was uploaded by Alicia Notetaker on Thursday September 24, 2015. The Class Notes belongs to PSY 205 - M001 at Syracuse University taught by T. Palfai in Fall 2015. Since its upload, it has received 100 views. For similar materials see Foundations of Human Behavior in Psychlogy at Syracuse University.
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Date Created: 09/24/15
Tuesday September 22 2015 PSY 205 Lecture 4 Notes Variations in Consciousness What is it Internal and external awareness of what s going on Internal are you hungry thirsty External what s going on in the environment around you Awareness of Internal and External Stimuli Levels of awareness William James Stream of consciousness Sigmund Freud Unconscious Sleepdreaming research Julian Jaynes bicameral mind The Iliad Homer 800 BC John R Seare emergent property of the brain The Study Consciousness Study the conditions when it i altered or absent Coma Sleep Chemicallyinduced changes Coma Where is neural control Tuesday September 22 2015 Frederic Bremer CERVEAU ISOLE above the pons ENCEPHALE ISOLE below the pons ARAS ascending reticular activating system 0N TEST Consists of the incoming nerve fibers running through the reticular formation that influences physiological arousal Spreads into many areas or cortex Reticular formation Looks like a fisherman s net Where consciousness is When activated rest of the brain becomes awake Has to wake up the rest of the brain Very sensitive area drugs affect it Sleep Circadian rhythms KNOW FOR TEST Circ around dian day 24 hour biological cycles Regulation of sleep other body functions Can leave people physiologically fall asleep most easily at points of the day Biological Rhythms Daily alteration of light and darkness Annual pattern of the seasons Existence of these rhythms biological clocks that somehow monitor the passage of time Tuesday September 22 2015 Daily exposure to light readjusts peoples biological clocks Circadian pace makers The suprachiasmatic nucleus SCN responsible for length of cycle depending on amount of light going through the optic nerve will activate pineal gland Pineal gland Produces melatonin thats responsible for how you feel Maximum release occurs between 9pm and 7am The ElectroEncephaoGraph EEG Consciousness and Brain Activity Consciousness arises from activity in distributed networks or neural pathways EEG monitors the electrical activity of the brain over time Hans Berger Measures electro activity in the brain Tested on son Changes that go on as a function of time Know for test which brain waves go with function Beta waves Aroused normal waking thought Alpha waves Relaxed Theta waves Sleeping Delta waves Deep sleep REM waves dreaming Tuesday September 22 2015 The study of sleep becomes possible Levels of frequency Does everyone Yes How often Do external events affect it ls dreaming necessary Sleep Different stages and the REM sleep Awake j m StageZL o Stagei g 5390993 sleep Stage4 cycles Hi Picture from Lecture Slideshow Sleep cycles Stage 1 brief transitional stage of light sleep 1012 minutes Alpha waves gt Theta waves Tuesday September 22 2015 Hypnic Jerks Brief muscular contractions that occur as people fall asleep Stage 2 sleep spindles 1025 minutes Sleep spindles Brief bursts of higher frequency brain waves Stages 3 amp 4 slow wave sleep Delta waves Brain waves become higher in amplitude and lower in frequency Stage 5 REM Rapid Eye Movement Sleep EEG similar to awake vivid dreaming irregular breathing and pulse rate lose muscle tone Deep sleep people are hard to wake from REM sleep Michel Jouvet two types of sleep 1 Slow wave of sleep Sleep essential for immune response body s attempt to fight illness Growth hormone grow repair skin 2 REM Sleep Consolidation memory Appetite increases without REM Structural maturation Recommended 8 hours a night of sleep Why do we need REM and slow wave sleep REM amp Slowwave sleep Contribute to memory consolidation firming up learning that takes place during the day REM Sleep Appears to foster the process of neurogenesis the format ion of new neurons neural maturation Tuesday September 22 2015 May promote creative insights related to previous learning Altered states of consciousness History Animals Mushrooms 15000 BC Alcohol 10000 BC Marijuana 2800 BC Opium 2000 BC Birth of psychopharmacology 1951 Laborit Psychopharmacology KNOW FOR TEST Pharmakon cure on poison Psychopharmacology study of drugs with behavioral effects history mechanism short and long term who uses and who abuses Classes of Psychoactive Drugs 0N T EST KNOWALL 7 CLASSES AND WHAT THEY DO Psychoactive drugs chemical substances that modify mental emotional or behavioral functioning 1 Stimulants Increase central feverous system activity eg amphetamine Benzednne 2 Sedatives Sleep inducing eg barbiturate Nembutal 3 Anxiolytic Anxietyrelieving drug eg diazepam Valium 4 Antipsychotic Act against psychotic systems schizophrenia eg chlorpromazine Thorazine 5 Antidepressant Relieve symptoms of depression eg fluoxetine Prozac 6 Narcotics Opiates Pain relieving eg morphine Tuesday September 22 2015 7 Hallucinogens Distort sensory and perceptual experience eg LSD Mechanism of action Work mainly by altering neurotransmitter activity in the brain Amphetamine XTC cocaine Constant surge of dopamine pleasure Barbiturates Alcohol PCP angel dust Valium Work the same way put you to sleep PCP can cause more harm than any other illegal drug Chlorpromazine Haloperidol Block dopamine receptors lmipramine Prozac Antidepressants Heroin morphine Makes endorphins so you don t feel pain LSD Marijuana Hallucinations