Response patterns of thoracic spinal neurons to IB in control and GER animals. A–C: examples of neurons with short-lasting excitatory (SL-E, A), long-lasting excitatory (LL-E, B), and inhibitory (C) responses to IB in a control animal. D–F: examples of SL-E (D), LL-E (E), and inhibitory (F) responses to IB in a GER animal. imp, Impulses. In all panels, top trace is the rate histogram and bottom trace is raw cell activity.