PSYC 107 1st Edition Lecture 8 Outline of Last Lecture I. Erickson’s Theoriesa. Trust & Mistrustb. Autonomy versus Shame and Guiltc. Initiative versus Guiltd. Industry versus Inferioritye. Identity versus Role Confusionf. Intimacy versus Isolationg. Generality versus Stagnationh. Integrity versus DespairII. Nervous Systema. Biological Psychology and Geneticsi. Neurons – incredibly awesome cells, send thousands upon thousands of signals per cell per second. III. Action PotentialsIV. Self PropagationV. Communication between Neuronsi. EPSP – excitatory postsynaptic potential (+ potential in) closer to threshold and more likely to fire. ii. IPSP – inhibitory postsynaptic potential (- potential in) more likely to fire because it is farther away from threshold. Outline of Current Lecture I. Recapa. NeurotransmittersII. Integration of Neural SignalsIII. Nervous Systema. Peripheral Nervous System1. Parasympathetic 2. Sympathetic b. Central Nervous Systemi. Brain and the Spinal Cordc. Lateralizationi. Includes the idea of the left-brain and the right brain. Current Lecture Recapa. At rest = polarized neuronb. Inside there is a slight positive charge, and outside there is a slight negative charge.i. Changes in the chemical environment cause depolarization, toward neutral charge. Very fast, 1000 times per second, also refracts 1000 times per second. c. Neurotransmittersi. Chemicals that carry synaptic signals1. Occurs when the “lock and key” mechanism fits and causesthe dendrite to fire. 2. Drugs with neurotransmitter mimicry can cause interference with certain chemical functions in the brain tohelp with certain conditions. II. Integration of Neural Signalsa. There are a bunch of synapses everywhereb. These signals fade over time and distance, the closer one is to the center of the neuron, the stronger and more likely that there is a chemical event.III. Nervous Systema. Peripheral Nervous Systemi. Somatic – sensory and motor function, muscle movement and communication of your body with the environment. ii. Autonomic – things like heart rate, digestion and breathing, this includes the parasympathetic and sympathetic response. 1. Parasympathetic: nervous system kept in check, conservation of energy. 2. Sympathetic: fight or flight mechanism. b. Central Nervous Systemi. Brain and the Spinal Cordc. Lateralizationi. Includes the idea of the left-brain and the right brain. What one sees through their left eye is processed on the right side of the brain and what one sees on the right eye is processed on the left side of the brain. ii. Different sides and parts of the brain do different things, do some things better than others. iii. Although there is a generalized lateralization of the brain it is not fixed, because a young child can have a whole hemisphere removed and still function normally after some time. 1. Corpus colossum 0 what connects the “two
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