Neuroscience_Slides[2] - Behavioral Neuroscience General...

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Behavioral Neuroscience General Psychology Dr. Stacey Tantleff Dunn
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The Case of Phineas Gage Gage was a railroad construction foreman An 1848 explosion forced a steel tamping rod through his head Others said he was “…no longer Gage…” Lost his job, worked as a sideshow exhibit
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Figure 2.1: Three Functions of the Nervous System
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Figure 2.4: Organization of the Nervous System
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Divisions of the Nervous System - Peripheral Nervous System (PNS) Relays messages between CNS and sensory organs, muscles, and glands. Has two components: somatic nervous system - controls voluntary movements of skeletal muscles. autonomic nervous system - controls glands and muscles of internal organs - mostly involuntary, but we can consciously override.
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Autonomic Nervous System Has two components: Sympathetic nervous system arouses us for defensive action. Readies the body for “fight or flight” response. Parasympathetic nervous system helps us conserve energy - it calms you.
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The Central Nervous System Consists of the brain and spinal cord. Spinal cord acts as info. highway between peripheral ns and brain. It coordinates activities of left and right sides of the body, and it controls simple reflexes that don’t involve the brain. Ascending tracts send sensory information, and descending tracts send back motor-control information.
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Figure 2.2: The Neuron Insert Figure 2.2 (“The Neuron”) about here
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Neurons (Nerve Cells) Specialized cells that are directly involved in mental processes and behavior. There are many different types.
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This note was uploaded on 08/22/2010 for the course PSY 2012 taught by Professor Negy during the Spring '07 term at University of Central Florida.

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Neuroscience_Slides[2] - Behavioral Neuroscience General...

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