I initially designed this first week as a series of dense biology lectures aimed to give students the basic knowledge to appreciate the vast complexity of memory. If you decide to include this neurology unit in your class, I would suggest that you focus more on student discoveries rather than covering a breadth of content. Perhaps this means expanding the neuroscience unit from 3 lessons into two weeks, having students study cells through a microscope and learning about neurology through studying the nervous systems of simple insects, then bridging that to humans. Perhaps this means keeping the unit short but focusing on telling a narrative about how memory works rather than building up a scientific model (i.e. going for awe rather than concrete understanding). Whatever you decide, I would recommend being very deliberate about what you want your students to walk away with from this unit!