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8 Cards in this Set
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The specific neural pathway that transmit info pertaining to a particular modality, and each sensory modality follows its own pathway.
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sensory areas of the cerebral cortex
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Somatosensory cortex
Gustatory cortex Visual cortex Auditory cortex Olfactory cortex |
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sensory unit
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a single afferent neuron and all the receptors associated w/it.
all the same type activation of associated receptors trigger action potentials in the afferent neuron. |
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receptive field
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Area over which an adequate stimulus can produce a response (excitatory or inhibitory) in the afferent neuron of that neuron.
It then corresponds to the region containing receptors for that afferent neuron. |
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first-order neurons
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The afferent neuron that transmits info from the periphery to the CNS
may diverge w/in the CNS and communicatew/several interneurons may distribute converging input to interneurons |
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second-order neurons
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Interneurons transmit the info to the thalamus, the major relay nucleus for sensory input
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third-order neurons
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In the thalamus, these second-order neurons form synapses w/ _______ ______ _______ that transmit info to the cerebral cortex, where sensory perception occurs.
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3-4 neurons long
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How long is a generalized neural pathway in the body?
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