Figure 4.

B65 is not necessary for egestive repetition priming. A, The EN was stimulated to induce egestive priming under control conditions (A1), and with B65 bilaterally hyperpolarized, either during the fifth (last) cycle of motor activity (A2), or throughout all five cycles of the motor program (A3). B, Filled circles represent data obtained under control conditions (no B65 hyperpolarization). Filled squares represent data obtained when B65 was hyperpolarized during the fifth cycle. Filled triangles represent data obtained when B65 was hyperpolarized during all cycles. Neither manipulation had a significant effect on the B8 protraction firing frequency during the last cycle (n = 8). n.s., Not significant at p > 0.05.