Summary: weekly mtg 20170322 (Byron, Steve, Matt, me) - mobeets/nullSpaceControl GitHub Wiki

In Intro:

multiple sets of muscle activations that lead to the same trajectory through space
or if task success is determined by endpoint variance, ...
try to bring out that the focus is on what is controlled
i.e., is muscle stiffness "null" or is the elbow variance null?

Intro: need to explicitly define redundancy

after first few sentences: "These are all examples of muscle redundancy. There's a similar form of redundancy at the level between neurons and muscles."

Intro: try to rewrite the first two sentences not as questions

could make it clear that there are always choices, and these are made every time you move
every time you move you actually answer this question
so maybe...question or not question. play around with it.

Last few sentences of Intro: the two main results

you're limited by a repertoire, but you use that whole set that works, in the null space
- this is really what makes it distinct from Matt's
mention yoking: it appears that subjects don't control activity in the null and potent space independently
- if you specify the row space value, then that informs the distribution of null space activity

FA: they describe the largest co-modulations of the activity of the neurons

IME part needs to move, but unclear where...

might be a discussion point?
- "you might be concerned that the subject is not aware of which dimensions are output-null..."
- we've done it both ways, the answers are the same, the results are actually cleaner when you do them with IME
  - so we choose this not because it's cleaner, but because we think it's a really important point: you have to estimate what the subject's conception of the null space is
yeah, make it a discussion point; or at the end of the results. yeah do discussion. this isn't something a reader will think about when they first read it

min-firing FA non-ortho projection problem