A strange phenomenon called visual masking can reveal the timescale of perception, but the underlying mechanisms are not well understood.
The colored plots illustrate neural activity recorded in mouse visual cortex (V1); each row of tick marks represents the spikes of a different neuron; researchers can predict the target side from the neural activity with near perfect accuracy, animal subjects get many masked trials wrong due to how brain regions downstream of V1 process this information. Image credit: Gale et al.
Did you ever wish you could unsee something? It turns out your brain is…
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