a neuron within the CNS or a sensory receptor which generally reacts to more than one kind of stimulant, like cutaneous sensory receptors which mediate prick-pain urges and also generate feelings of itching.
a neuron within the CNS or a sensory receptor which generally reacts to more than one kind of stimulant, like cutaneous sensory receptors which mediate prick-pain urges and also generate feelings of itching.