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| What are Sensory Pathways? | Ascending Spinal Tracts, consolidating information from UNMIXED Sensory units --> Specific Areas of Cerebral Cortex
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| What are 2 examples of Sensory Pathways? | ANTERIOR Spinothalamic Pathways, LATERAL Spinothalamic Pathways
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| What are 3 characteristics of ANTERIOR Spinothalamic Pathways? | 1. carry TOUCH and PRESSURE sensation; 2. A-fibers, well-myelinated Neurons; 3. AP Velocity: 70-120 m/s
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| What are 3 characteristics of LATERAL Spinothalamic Pathways? | 1. carry TEMPERATURE and some PAIN sensations; 2. C-fibers, poorly-myelinated Neurons; 3. AP Velocity: 1-20 m/s
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| What would happen if an injured Heat Receptor grew back as a Pressure Receptor? | Pressure interpreted as Heat
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| What determines a Stimulus' INTESITY? | the NUMBER of active Sensory Units and the FREQUENCY of incoming Sensory AP's
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| Is Stimulus Intensity infinite? | there is limit to how much is perceivable
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| What does the Thalamus determine? | CRUDE localization
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| How does the Thalamus determine localization? | by which Sensory Pathways are active
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| What does the Primary Sensory Cortex determine? | PRECISE localization
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| How does the Primary Sensory Cortex determine localization? | Sensory Areas are MAPPED out - POSTERIOR to the Central Sulcus on the Cerebral Cortex
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| How is the exact location of a stimulus determined? | by COMPARING the relative Activity and Inactivity of adjacent Sensory Units
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| Which areas of the Somatosensory Cortex are the largest? | areas devoted to the parts used to interact with the environment
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| What are the 2 functions of the Parietal Association Cortex? | 1. provides information regarding Previous Experience; 2. evaluates Shape/Texture and determines Implication
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| What is the function of the Frontal Association Cortex and Limbic System? | adds Emotional and Motivational elements
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| What is Stimulus Peripheral Projection? | mental. Assignment of stimulus to its proper External Location
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| What influences Stimulus Peripheral Projection? | bilateral COMPARISON of the stimulus ARRIVAL times in the Brain and their relative INTESITIES
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Created by:
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