LTP in ACC–LA pathway does not require inhibition of GABAA receptor-mediated transmission. A, Experimental scheme. B, Left, LTP in ACC–LA pathway, insets represent averaged EPSPs before (1) and after (2) induction as indicated by thick bars (5 min each). Right, Summary for the LTP. Number of cells is shown in parentheses. **p < 0.01, ***p < 0.001. Error bars represent SEM.