Figure 1

Thalamic and ACC nociceptive unit responses and distribution. A. Thalamic distributions of electrical and mechanical evoked unit responses. B. Thalamic unit responses evoked by noxious mechanical stimuli. C. Thalamic unit response evoked by electrical stimuli. D. Cortical numbers for each ACC area and layer distributions of the electrical and mechanical evoked unit responses in the ACC. E. Unit activities evoked by noxious mechanical stimuli. The horizontal black bars indicate the time periods during which the following stimuli were applied: 1. tail, 2. left hind paw, and 3. right hind paw. F. Post-stimulus histogram of electrically evoked unit activities in the ACC (Modified from 42 and 44).