Unformatted text preview: The Nervous System The Nervous System and Brain “I hope I didn’t brain my damage.” Homer Simpson Lower Level Brain Structures Lower Level Brain Structures
A. Lower Level Structures 1. Cerebellum 2. Brain Stem a. Medulla b. Pons c. Reticular Formation d. Thalamus e. Hypothalamus Cont. Cont. 1. 2. No conscious effort Cerebellum (little brain) – coordinates Cerebellum voluntary movement voluntary Brain Stem – automatic survival functions, Brain crossover point for info. leaving and entering brain brain Cont. Cont.
a. b. c. Medulla – controls heartbeat and Medulla breathing breathing Pons – bridge between cerebellum and Pons rest of brain rest Reticular formation – arousal, sleep, Reticular relay center relay Cont. Cont.
Thalamus – sensory relay center (except Thalamus smell) smell) b. Hypothalamus – maintenance – temp. Hypothalamus regulation, eating, drinking, sexual behavior. Helps govern the endocrine system via the pituitary gland. Reward center and linked to emotion. center Basal ganglia – slow deliberate movement, ie Basal walking, reaching walking,
a. Higher Level Structures Higher Level Structures
A. Higher Level Structures 1. Limbic System – basic drives and 1. emotion emotion a. Hippocampus – memory processing b. Amygdala – fear, aggression, emotion c. Hypothalamus 2. Cerebral Cortex – higher-order control, 2. information processing, reasoning, personality, intelligence, language personality, Cont. Cont.
Frontal lobe – motor initiation b. Parietal lobe – somatosensory (touch) c. Occipital lobe – vision d. Temporal lobe – hearing Association areas – learning, memory, thinking, Association speaking, planning, combine sensory input with stored memories. All lobes have association areas. association
a. Language Language Broca’s Area – left frontal lobe, directs speech Broca’s muscles muscles Wernicke’s Area – left temporal lobe, Wernicke’s language comprehension language Hemispheric Specialization Hemispheric Specialization Left-hemisphere – language Right-hemisphere – spatial-reasoning and Right-hemisphere orientation, facial recognition, reading maps, drawing geometric shapes drawing Corpus callosum – connects the two Corpus hemispheres and allows them to communicate hemispheres ...
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- Spring '08
- temporal lobe, level brain structures, Cont. Cont, Lower Level Brain