Complex sentence: According to the cognitive map theory, the hippocampus's primary role in the rat is to store spatial information through place cells and the rat hippocampus was biologically designed to provide the rat with spatial information.
Split into simpler sentences: According to the cognitive map theory, the hippocampus's primary role in the rat is to store spatial information through place cells. The rat hippocampus was biologically designed to provide the rat with spatial information.