Stephen David

@stephenvdavid.bsky.social

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Brains, hearing, behavior, computation. Dad, science believer, cyclist, and mind wanderer.

A. Spectro-temporal filters define three most important dimensions for each of 8 neurons in a cortical column. B. SSRFs show regions in the subspace that evoke activity for that neuron. C. 1D SSRF marginals show tuning that can be monotonic or U-shaped. D. SSRFs produce very diverse time-varying activity across a cortical column, despite most neurons sharing a very similar tuning subspace.
Schematic of procedure for measuring subspace from DNN model. Traces illustrate the projection of a natural sound stimulus onto each subspace dimension, subspace receptive fields (SSRFs) map from the subspace projection to neural spike rate.