Psych 105 week 3 notes
Psych 105 week 3 notes Psych 105- Intro to Psycholgy
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Psych 105- Intro to Psycholgy
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This 7 page Class Notes was uploaded by JustAnotherStudent on Friday January 30, 2015. The Class Notes belongs to Psych 105- Intro to Psycholgy at Washington State University taught by Staff in Fall 2015. Since its upload, it has received 202 views. For similar materials see PSYCH 105 in Psychlogy at Washington State University.
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Date Created: 01/30/15
Psych 105 Week 3 270115 amp 290115 Welcome Back 0 Questions 0 Email only For paper 1 due Thursday 0 Email to the TA listed under your last name on Angel 0 Announcements 0 How to log into the Psychology Department s SONAResearch o Firstnameastname I Forgot password password will be sent I Log in Chemical Communication between Neurons Synapse point of communication between two neurons Synaptic gap space between the axon of one neuron and the dendrite of another neuron Communication between neurons 0 Neurotransmitters can have different effects 0 Each receptors site only accepts specific kinds of neurotransmitters I A neurotransmitter can have multiple types of receptors 0 Reuptake recycling of leftover neurotransmitters o Excitatory and Inhibitory Messages 0 Excitatoryincreases the likelihood of activation of neuron o Onhibitory decreases likelihood of activation of neuron What happens to the neurotransmitters in synapse o Reuptake neurotransmitters are absorbed back into the presynaptic neuron 0 Enzyme deactivation Disassembly neurotransmitter are broken down by enzymes in the synapse 0 Auto receptors neurotransmitters bind to autoreceptoers Types of Neurotransmitters o Acetychoine Ach lets you move malfunctions ADD ON ALL IN TABLE 0 Dopamine influence movement learning attention 0 Serotonin affects mood hunger seep arousal o Norepinephrine helps controls alertness and arousal o Endorphins Boost mood lessens pain The Nervous System 0 Nervous system 0 Central Nervous System brain and spinal cord I Life sustaining functions coordinates thought emotion behaviour 0 Brain 0 Spinal cord connects brain and peripheral nervous system 0 Spinal reflex a simple involuntary behaver that is processed through the spinal cord first 0 carries messages to and from CNS I Somatic nervous system controls voluntary muscles and transmits sensory info to CNS I Controls involuntary body functions 0 Sympathetic nervous system arouses body to expend energy 0 Organs stimulated to prepare for fightflight o Pupils dilate 0 Heart pumps faster 0 Lung pumps more 02 o Hormones released 0 Sweat produced 0 Organs shut down to conserve energy 0 Digestion shuts down 0 Salivation stops 0 Parasympathetic nervous system Calms body to conserve and maintain energy 0 Restores the body to normal resting state after arousal I Maintenance stage The Brain 0 Weighs about 3le 0 Uses 20 of your oxygen Structures of the Brain 0 Frontal lobe o Parietal Lobe o Occipital lobe o Cerebellum Organizing the Brain Three major structures 0 Hindbrain o Involved in the bodies vital functions like breathing and heartrate o Contralateral control major pathways from the left side of body cross over to the right side of the brain and vice versa 0 Medulla oblongata breathing swallowing heart rate 0 Cerebellum learned and automatic motor function 0 Fans connects the medulla to the cerebellum to help coordinate and integrate movements 0 Midbrain 0 Make up the brain stem 0 Contains structures involved in o Forebrain o Uppermost and largest region of the brain 0 Cerebral cortex 0 Subcortex limbic system 0 Grey matter gial cells which support neurons and neuron cell bodies and axons giving it a greyish appearance 0 White Matter white myelinated axons extending inward from the cerebral cortex 0 Limbic System emotion memory motivations o Thalamus routes sensory info 0 Hypothalamus biological needs 0 Sleep hungerthirst sex body temp o Hippocampus memory 0 Amygdala processing emotional info especially fear anger disgust o Amygdala damage makes it difficult to identify facial emotion o Cerebral cortex where much of human thought planning perception and consciousness occur 0 90 of human brain 0 two hemispheres connected by the corpus callosun o 4 lobes of Cerebral Cortex o controls movement of muscles higherorder processing thinking planning etc receives tactile info receives and processes visual info receives auditory info THESE ARE IMPORTANT FOR THE TEST IF I HIT THIS WHAT HAPPENS OOOO Phineas Gage 0 Railroad spike through his brain 0 Mostly damaged left frontal lobe 0 He lived but 0 Experienced personality changes 0 Less ambition o Irresponsible o Profane The dynamic brain plasticity and neurogenesis o No longer thought to be fixed for life 0 Neuroplasticity is the ability to change function and structure 0 Functional plasticity brain s ability to shift functions from damaged and undamaged brain areas 0 Structuralplacitiy IMPUT DEFF 0 Researchers have concluded that in most people 0 Left hemisphere is superior in language abilities speech reading and writing 0 Right hemisphere is more involved in nonverbal emotional expression and visual spatial tasks Learning about the brain by studying damaged brain 0 Language left hemisphere important for test 0 Broca s aphasia speech impairment I Damage in small area of left frontal lobe broca s area 0 Wernicks aphasia inability to understand languageproduce meaningful language I Damage in left Temporal lobe Wernicke s area Split brain research 0 Procedure cut corpus callosum o Allows for research investigating hemispheric specialization by sending messages to only one side of the brains o Hemispheric specialization o ExLanguage Left 0 Watch video on site The Endocrine System 0 Organization of glands that release and regulate bodily hormones o Hormones chemicals that travel in the bloodstream and carry messages to tissues and organ 0 Metabolism growth rate digestion blood pressure sexual development 0 Pituitary gland master endocrine glad that controls the release of hormone from other glands from the body Brain Structures you should know 0 Four lobes and functions 0 Amygdala 0 Corpus callosum o Hippocampus o Cerebellum o Cerebral cortex 0 Thalamus o Hypothalamus How does this all come together 0 Developing brain YouTube video The Secret Life of the Brain The Baby s Brain minwmv 0 Video on baby s brain I 24 weeks the brain had millions and millions of neurons I Brain begins to wire itself from a very specific genetic blueprint I Eventually there will be trillions and trillions of connections 0 Nothing random nothing arbitrary I You use over 10 of your brain while comatose 29012015 Addiction and the Brain Continued drug use sharply reduces the number of dopamine receptors in the brains reward system Dopaminefrom Tyrosine inhibitory o Receptors in the midbrain tegmentum cerebral cortex hypothalamus o In charge of pleasure reward movement attention memory 0 Cocaine meth amphetamine 0 Most drugs that are abused augment the dopamine reward pathway in some way Serotonin from tryptophan inhibitory o Receptors in Midbrain Tegmentum Cerebral Cortex Hypothalamus 0 Effects mood sleep sexual desire appetite 0 Ways to mess with serotonin o LSD Cocaine MDMA I Add to your serotonin levels they make more of it 0 That s why sex is great on ecstasy and sleep sucks 0 LSD makes you feel connected to everything you can become one with the chair Overflow of serotonin floods the entire brain 0 One of the few drugs known to cure schizophrenia Norepinephrine from Tyrosine Excitatory o Midbrain tegmentum cerebral cortex hypothalamus o Sensory processing movement sleep mood memory anxiety 0 Cocaine methamphetamine amphetamine Endogenous opioids inhibitory 0 Brain spinal cord many types of receptor types 0 Pain relief sedation rate of autonomic bodily functions mood o Heroin morphine oxycodone Percocet Vicodin o The amount of stress that your under varies the amount it takes for you to get high 0 Narcan opioid buster disinigrates all the opioids in your brain 0 Given to you in the hospital straps you down Acetylcholine o Hippocampus cerebral cortex thalamus basal ganglia cerebellum 0 Memory arousal attention mood o Nicotine mescaline 0 Everything is shiny and you can t focus 0 Don t do this with nicotine to reach to a mescaline level Endogenous Cannabinoids depends o Cerebral cortex hippocampus thalamus basal ganglia 0 Movement cognition memory o Marijuana 0 There s a limit to how much cannabinoids your receptors can take in Glutamate excitatory 0 One of the most common receptors in the brain 0 Causes increased neuron activity effects learning cognition memory 0 Ketamine phencyclidine Shrooms alcohol To get the most out of your drugs be awake empty stomach GABA inhibitory 0 Brain all over 0 Decreases neuron activity anxiety memory anaesthesia 0 Alcohol barbiturates benzodiazepines GHB Valium Xanax 0 Barbiturates are given as a right to die in Oregon Depressants 0 Alcohol 0 Ba rbitu rates 0 Inhalants o Tranquilizers Stimulants o Caffeine o Nicotine o Amphetamines o Methamphetamines o Cocaine Opiates depress o Opium o Morphine o Heroin o Methadone o Prescription painkiller Psychedelics o Marijuana 0 LSD o Mescaline Club Drugs synthetic stimulantshallucinogens used at dance clubs parties quotravesquot o EcstasyMDMA o Dissociative anaesthetics PCP Ketamine Recovery We will revisit later transcending addiction and redefining recovery Jacki Hillios TedTaIk