Traveling brain waves may act as a core engine for perception and memory

In a review published in Neuron, scientists from the Salk Institute and collaborators present a unified theory that traveling electrical waves sweeping the cortex serve as a core computational mechanism. By propagating through neural circuits, these waves help the visual cortex construct internal models of the external world, support short-term predictions, and replay sequences linked to memory. The authors outline four primary functions: dynamic tuning of perception, transformation of sensory streams into stable representations, generation of immediate forecasts, and preservation of temporal event patterns.

They argue that synaptic changes driven by experience shape the wave-generating circuitry, enabling the brain to learn statistical regularities much like AI language models. The study was funded by multiple agencies, including the NIH and Canadian research bodies.