not sure if its high or low yield, but the NS isn't as bad as it seems. Rather than wondering if its going to show up or not, cover your bases. From my experience, the Biology section of the DAT is random as can be. Some questions will really make you think and draw in information from all different areas. While others you will know right away. It would be in your best interest to be as prepared as you can be for this section. Good luck studying.
i don't remember seeing neuro in the questions, but i did have an entire reading passage on neuro. lucky for me, being a neurosci major, i blasted thru those questions. but yeah, just be prepared for it.