PSYC 107 1st Edition Lecture 8 Outline of Last Lecture I Erickson s Theories a Trust Mistrust b Autonomy versus Shame and Guilt c Initiative versus Guilt d Industry versus Inferiority e Identity versus Role Confusion f Intimacy versus Isolation g Generality versus Stagnation h Integrity versus Despair II Nervous System a Biological Psychology and Genetics i Neurons incredibly awesome cells send thousands upon thousands of signals per cell per second III Action Potentials IV Self Propagation V Communication between Neurons i 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 Recap a Neurotransmitters II Integration of Neural Signals III Nervous System a Peripheral Nervous System 1 Parasympathetic 2 Sympathetic b Central Nervous System i Brain and the Spinal Cord c Lateralization i Includes the idea of the left brain and the right brain Current Lecture Recap a At rest polarized neuron b 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 Neurotransmitters i Chemicals that carry synaptic signals 1 Occurs when the lock and key mechanism fits and causes the dendrite to fire 2 Drugs with neurotransmitter mimicry can cause interference with certain chemical functions in the brain to help with certain conditions II Integration of Neural Signals a There are a bunch of synapses everywhere b 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 System a Peripheral Nervous System i 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 System i Brain and the Spinal Cord c Lateralization i 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 brains
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