Non-saturating dimensionality, contextual dependence, and the limits of unsupervised decoding in motor cortex
Michael P. Silvernagel, Alice Tor, Elizabeth J. Jun, Stephen E Clarke, Robert Sutherland, Kenji Marshall, Yuxin Wu, Muhammad U Abdulla, Nir Even-Chen, Paul Nuyujukian
The paper shows that unsupervised dimensionality in motor cortex does not reflect movement complexity but instead scales with neuron count and is context-dependent, challenging assumptions about neural representation.
bioRxiv · Jun 4, 2026 · PreprintNeuroscience