And indeed, on the inputs to the hippocampus, cells are found which project into the hippocampus, which do respond exactly to detecting boundaries or edges at particular distances and directions from the rat or mouse as it's exploring around.
而且确实，在老鼠搜罗环境时， 我们在海马区的输入信号中， 检测到能对 距环境边界的特定距离 与方向作出 精确感应的 神经元细胞。