PSY 11 Lecture Notes - Lecture 2: Phineas Gage, Motor Neuron, Sensory Neuron
25 Oct 2016
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Peripheral nervous system-everything else: somatic nervous system-controls voluntary functions, autonomic nervous system-usually controls involuntary functions. Ex. biofeedback; fight or flight reaction; nasa video: sympathetic division-usually speeds up activity, parasympathetic division-usually slows down activity; pacifies restores homeostasis neuron = nerve cell. Synapse - space between cells, where the neurotransmitter gets released. Inhibitory : synaptic potential that makes a postsynaptic neuron less likely to. Excitatory : action potential in a presynaptic neuron increases the probability of generate an action potential. an action potential occurring in a postsynaptic cell. Refractory period : a pause; neuron has to reset itself to fire. Reuptake of neurotransmitters : reabsorption of what"s left. All drugs are interacting with the neurotransmitter system, in a good or bad way. Dopamine and schizophrenia (they have too much dopamine) Frontal lobe (association cortex, motor cortex) logic, decision making. *more sensitive/ complex body parts take up more brain cortex/area. Initial filter for attention to incoming stimuli- reticular formation.
