Very cool: it's amazing that this doesn't rely on paired data!
@mickbonner.bsky.social and I recently found that the shared geometry is characterized by a ~universal power-law: doi.org/10.1371/jour..., Fig 2
Now I'm curious if we could have done it without the paired stimuli...
Are gist-like shifts in memory over time evidence of engram transformation? Really? Or partly a general response bias?
At #APS2026 in Barcelona this week, Mattia Delmarco will present our work on object typicality and visual memory.
psychologicalscience.confex.com/psychologica...
Hyperalignment uses paired responses to shared stimuli to learn the map, effectively optimizing pointwise correspondence across subjects. Here, the rotation is learned from distributional/geometric structure: similar regions of the stimulus distribution should induce similar response geometry, [...]
Author summary The human cerebral cortex is thought to encode sensory information in population activity patterns, but the statistical structure of these population codes has yet to be characterized. ...