Figure 1.

A similar LTD in the DH and VH is affected in an opposite manner by stress. A, LTP is larger in the DH than in the VH, but LTD is the same in both regions. In separate groups of slices, LTD and LTP were generated in both slice types. As seen previously (Maggio and Segal, 2007), LTP was larger in DH than in VH, but the two regions produced similar LTD (7 slices in each condition, sample traces above the grouped data illustrate records taken at the indicated time points). B, Stress affects differently LTP and LTD in the DH and VH; while LTP is reduced, and LTD is enhanced in the DH, LTP in the VH is enhanced, but LTD is converted to slow-onset LTP (bottom right). Please note that the control groups in both the DH and VH are the same as in A. Sample illustrations are at the indicated time points marked on the grouped data, which are averages of seven slices each.