Extended Data Figure 1: Brain sections showing recording positions in CA1, LEC and MEC.
From: Coordination of entorhinal–hippocampal ensemble activity during associative learning
a, Recording positions (red) in CA1 in coronal brain sections from representative animals (top; animal and tetrode numbers indicated; distal–proximal (DP) distances as in Extended Data Fig. 5) and in a projection of a 3D reconstruction of the CA1 pyramidal cell layer (bottom; see Extended Data Fig. 5 for the full 3D reconstruction). Abscissa shows the lateral–medial axis and ordinate the anterior–posterior axis. Dorsal–ventral is colour-coded. Each dot corresponds to one recording location in distal (red), intermediate (green) and proximal (blue) parts of CA1. Stippled line indicates septotemporal axis of the hippocampus (see Supplementary Methods). b, Tetrode positions (red) in coronal sections through LEC for all 5 animals with simultaneous recordings in LEC and dCA1. Animal numbers are indicated. c, Tetrode positions (red) in sagittal sections through MEC (all 4 animals with simultaneous MEC and dCA1 recordings). d, Tetrode positions (red) in coronal brain sections through LEC from all 3 animals with simultaneous recordings in pCA1 and LEC. Orientation: D, dorsal; L, lateral; A, anterior.
