PSY 100 Ch3 notes
PSY 100 Ch3 notes PSY 100-003
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This 5 page Class Notes was uploaded by Anna Smith on Thursday January 28, 2016. The Class Notes belongs to PSY 100-003 at Northern Kentucky University taught by Kellie Pierson in Spring 2016. Since its upload, it has received 38 views. For similar materials see Introduction to Psychology - SB in Psychlogy at Northern Kentucky University.
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Date Created: 01/28/16
PSY 100 CH 3 Biological Foundations of Behavior Nervous System Complex Integrated Adaptable Electrochemical transmission Nervous system: Pathways Nerves carry info Afferent means going towards Efferent means going away Nervous System: divisions Central A. Brain and spinal cord Peripheral A. Somatic sensory nerves and motor nerves B. Autonomic sympathetic and parasympathetic Nervous System: Cells Glial cells A. Provide support and nutrition Neurons A. Information processing computing and communicating Neurons: Structure Cell body is where the central nucleus is Dendrites Axons Myelin sheath Neural impulse Negatively + positively charged ions Polarization Resting potential Synapses and Neurotransmitters Synaptic transmission A. Electrical impulse is converted into a chemical signal B. Axon vesicle releases neurotransmitter into gap C. Dendrite receptor site detects neurotransmitter Neurotransmitters Neurotransmitters carry info across the synaptic gap to the next neuron Acetylcholine A. Muscle action, learning, memory B. Black widow venom increases Ach levels C. Botox decreases Ach levels GABA A. Anxiety decreases GABA levels Glutamate A. Excitatory B. Learning and memory C. Involved in many psychological disorders Norepinephrine A. Stress and mania increases norepinephrine levels B. Depression decreases norepinephrine levels C. Regulates sleep states in conjunction with Ach Dopamine A. Voluntary movement B. Reward anticipation C. Stimulant drugs; activate dopamine receptors Serotonin A. Regulates of sleep, mood, attention, learning B. Depression decreases serotonin levels C. Prozac increases serotonin levels Oxytocin A. Botj a hormone and a neurotransmitter B. Related to onset of lactation in new mothers C. Related to attachment/emotional bonds Studying the brain Brain lesioning A. Naturally occurring or induced Staining Electrical recording Brain Imaging Xray CT scan PET MRI fMRI Hindbrain Parts of the brain brainstem A. medulla control breathing, regulate reflexes B. pons sleep and arousal cerebellum A. motor coordination Midbrain stereotyped behavior patterns Forebrain Limbic System memory and emotion A. amygdala discriminated objects needed for survival/emotional awareness and expression B. hippocampus formation and recall of memories Thalamus relay system for much sensory info Basal Ganglia coordinated of voluntary movements Hypothalamus eating, drinking, sexual behaviors regulate body’s internal state emotion, stress, reward Cerebral cortex four lobes A. occipital (vision) C. Temporal (hearing, language processing, memory) D. Frontal (intelligence, personality, voluntary muscles) E. Parietal (spatial location, attention, motor control) Somatosensory, motor, and association cortex Somatosensory cortex A. body sensations/touch Motor cortex B. Voluntary movements C. Planning and control Split brain research Corpus callosum Large bundle of axons that connects the two hemispheres of the brain Hemispheres of the cortex Hemispheric specialization of function A. Left hemisphere verbal processing, speech, grammar B. Right hemisphere spatial perception Endocrine system Set of glands that regulates the body by secreting hormones Brain damage and Plasticity Recovery from brain damage depends on A. Age of the individual B. Extent of the damage Repairing the damaged brain A. Collateral sprouting B. Substitution of function C. Neurogenesis D. Brain tissue grafts
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