chapter 2 - Thalamus sensory switchboard Reticular...

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Chapter 2 Biological psychologists- study links between biological activity and psychological events Action potential- brief electrical charge fired from neuron that travels down the axon Threshold- minimum intensitry to trigger an action potential Neurotransmitter- chemical messengers Antagonists- inhibit Agonists- excite by blocking re-uptake Endorphins- natural opiates released by rigorous exercise and pain- "runner's high." Nerves- axons carrying PNS info Sensory neurons- carry info from body part to CNS Motor neurons- from CNS back to body part Interneurons- in CNS's internal communication system Somatic Nervous System- voluntary motion of skeletal muscles Autonomic Nervous System- controls glands and muscles of internal organs Reflex- autonomic response to stimuli, from spinal cord Adrenal gland- on top of kidneys, help triggers fight or flight response Pituitary gland- releases hormones that influence growth, "master gland"
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Unformatted text preview: Thalamus- sensory switchboard Reticular Formation- filters stimuli going to thalamus Limbic System hippocampus- memory amygdala- aggression and fear hypothalamus- hunger, thirst, body temp, and sexual behavior, monitors blood chemistry Cerebral Cortex- ultimate control and infor processing center wrinkled to increase surface area motor cortex- can be mapped, each part is devoted to a body part sensory cortex- "" association areas- integrate information, link sensory inputs w/ stored memory in all 4 lobes frontal lobes- judgement, planning, and processing of new memories parietal lobes- math and spatial reasoning right temporal lobe- recognize faces aphasia- impairment of language Corpus Callosum- wide band of axon fibers connecting the two brain hemispheres Split Brain- condition where the hemispheres are isolated by cutting corpus collosum...
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