When you look at the experiment online, you see all of the cells that were identified for any of the three sessions that make up that experiment container. If you recall, for each field of view, we imaged three different times using different stimuli. We match cells across the sessions, and some cells are found in all three sessions, some in any combination of 2 of the 3 sessions, and some just in one session. You should notice on the website that for some cells, for some stimuli, it says NA which means that cell wasn’t identified for the session that included that stimulus. The sweep response dataframe only includes cells that were identified during the session of that particular stimulus.
(Also, just in case you hadn’t noticed this yet, one column in the sweep response is the running speed, and is called “dx”).