The present study investigated the involvement of H(1) histaminegic receptor on the acquisition of inhibitory avoidance in Carassius auratus submitted to telencephalic ablation. The fish were submitted to telencephalic ablation 5 days before the experiment. The inhibitory avoidance procedure included 1 day for habituation, 3 days for training composed of 3 trials each (1st day: T1, T2, T3; 2nd ...

Bin, r, k) = 0 fo r k > n, B(n9 r9 0) = 0 , Bin, r, 1) = r(r + l ) . . . ( p + n 1 ) , Bin, v, ri) = v and Bin, ls k) = \L(n9 k) | , t h e s i g n l e s s Lah numbers ( see Riordan [ 1 2 ] , p . 4 4 ) . Ahuja & Enneking have a l s o ob ta ined (see [2]) t he fo l lowing r e l a t i o n s for t he B(n9 r9 k)'s: Bin + 1, v9 k) = in + rk)B(n9 v9 k) + vBin, r, k 1 ) , (2) and [Bin9 v9 k)] > Bin, v,...