Discussion of nunuphar's comment: It is unclear why the ~5 mice they used per group along with 16 channel microwire arrays produced only ~27 units from the SNr. When these units are further broken down into groups the numbers are so small that it is hard to understand for example whether the baseline differences between the inhibited and excited units in the SNr are real. Similarly unclear why they only have ~6 responsive units from striatum, this is very low considering they had 2 mice and a 32 microwire array. They don't mention the total number units they recorded and the % of responsive striatal cells they got, nor do they show any examples of brain sections with the infected striatal area and fibers in SNr or pallidum.