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| The chain of neural connections from sensory receptor cells to the cortex. |
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| A local change in the resting potential of a receptor cell that mediates between the impact of stimuli and the initiation of action potentials. |
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| A receptor in which the frequency of action potentials drops rapidly as stimulation is maintained. |
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| The brain regions at the top of the brainstem that trade information with the cortex. |
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| A state or condition of selective awareness or perceptual receptivity, by which specific stimuli are selected for enhanced processing. |
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| The discomfort normally associated with tissue damage. |
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| A condition in which stimuli in one modality evoke the involuntary experience of an additional sensation in another modality. |
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| A substance, given to a patient, that is known to be ineffective or inert but that sometimes brings relief. |
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| A receptor in which the frequency of action potentials declines slowly or not at all as stimulation is maintained. |
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| A somatosensory system that delivers most touch stimuli via the dorsal columns of spinal white matter to the brain. |
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| A physical event that triggers a sensory response. |
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| A skin receptor cell type that detects vibration. |
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| The progressive loss of receptor sensitivity as stimulation is maintained. |
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| A compound synthesized by various plants to deter predators by mimicking the experience of burning. |
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| A strip of skin innervated by a particular spinal root. |
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| An axon that terminates in the skin without any specialized cell associated with it and that detects pain and/or changes in temperature. |
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| The outermost layer of skin, over the dermis. |
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| A class of compounds that exert an effect like that of opium, including reduced pain sensitivity. |
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| The stimulus region and features that affect the activity of a cell in a sensory system. |
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