We believe that we have discovered a vector calculus for neural computation in the cerebellum: work of @ma_fakharian @just_alden @pauliehage @HElseweifi

biorxiv.org/content/10.110… When a neuron is active during a movement, we assume that it is contributing to it. However, null space theory @MarkChurchland predicts that neurons often generate spikes not to cause behavior, but to nullify the effects of other neurons on behavior.

Here is what we have learned so far regarding use of Neuropixels NHP.

This is the work of @ma_fakharian @just_alden and @pauliehage

1. They need to be sharpened. Otherwise we could not penetrate the marmoset dura. To sharpen, we used a hard disk drive while monitoring the probe with a camera. @ma_fakharian practiced using the dummy probes.