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10 Cards in this Set
- Front
- Back
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What are the functions of the nervous system? |
1. Rapid communication 2. Information Processing |
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Name and describe the three steps of information processing |
1. Sensory Input - external/internal information from sensory receptors is received. 2. Integration - input is interpreted and associated with a response 3. Motor Output - transmits signals from integration centre to effector cells |
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What is the difference between afferent and efferent neurons? |
Afferent neurons travel from the periphery to the central nervous system (CNS); efferent neurons travel from the CNS to the periphery |
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What are some solutions to the conversion of stimulus energy into a neuronal signal? |
1. Transduction 2. Amplification and Sensory Adaptation 3. Transmission |
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What is the pathway that transduction follows? |
The transduction pathway is as follows: Stimulus ---> Sensory Receptors ---> Change in Receptor Membrane Permeability ---> Receptor Potential |
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What are some solutions to encoding information about stimulus? |
1. Type of stimulus - type of activated receptor 2. Intensity - # of activated receptors and frequency of action potentials 3. Location - of activated receptors and timing of receptor activation 4. Duration - pattern of action potentials |
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What are the 5 receptor types and what do they respond to? |
1. Chemoreceptors - chemical stimuli 2. Mechanoreceptors - mechanical stimuli 3. Thermoreceptors - responds to temperature changes 4. Nociceptors - tissue damage (pain-ish) 5. Electromagnetic Receptors - electric currents |
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What are some strategies to the interpretation of information? |
1. Processing and integrating sensory information 2. Hierarchical/parallel processing of information 3. Different areas of the brain process different perceptions 4. Information is incorporated from different modalities at a higher association centre |
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What is sensation triggered by? |
Sensory stimuli |
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How does sensation travel to the brain? |
Sensation travels to the brain as action potentials via sensory pathways |
