Coker2e_Ch04

Coker2e_Ch04 - Neural Mechanisms Contributions and Control...

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Neural Mechanisms Contributions and Control
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The Nervous System Central Nervous System (CNS) Brain and spinal cord Processes: Sensory information is integrated Decisions are made Signals are generated and sent to muscles and glands to carry out responses
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The Nervous System Peripheral Nervous System (PNS) Nerves that extend from brain and spinal cord, linking body and CNS Afferent division: Detects changes in the environment and conducts nerve impulses from sensory receptors to CNS Efferent division: Transmits nerve impulses away from the CNS
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Sensory Receptors Exteroceptors: Detect stimuli outside the body Provide information about the external environment Interoceptors: Detect stimuli from internal viscera Provide information about the internal environment Proprioceptors: Provide information regarding body position and movement Detect changes in muscle tension, joint position, and equilibrium
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Vision Predominant sensory receptor: 70% of all the body’s sensory receptors are located in the eyes 40% of the cerebral cortex is thought to be involved in some aspect of processing visual information Sport vision: Focuses on investigating visual contributions to performance
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Basic Structures of the Eye
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Visual Fields of the Eyes and Associated Neural Pathways
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Focal vs. Ambient Vision Focal system: Functions to identify objects located primarily in the center
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This note was uploaded on 09/08/2011 for the course ESS 3303 taught by Professor Staff during the Summer '08 term at Texas Tech.

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Coker2e_Ch04 - Neural Mechanisms Contributions and Control...

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