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. 2008 Oct;25(10):1241–1245. doi: 10.1089/neu.2008.0515

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Copyright 2008, Mary Ann Liebert, Inc.

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FIG. 1. — Typical examples of stimulus-response characteristics in medullary reticular formation (MRF) neurons from spinally transected animals. (A) Example of excitatory responses of a single MRF neuron located in the left nucleus reticularis gigantocellularis pars alpha to low-threshold stimulation of dorsal trunk, face and eyelid. As shown, this neuron responded to gentle pinching of the ear (search stimulus). (B) Example of excitatory responses of another single MRF neuron located in the left nucleus reticularis gigantocellularis to high-threshold stimulation of dorsal trunk, face, and eyelid. This neuron did not respond to low-threshold stimulation of trunk but responded to low-threshold stimulation of the face and eyelid. Horizontal bars indicate the onset and duration of the mechanical stimulus.