Representation and computation in visual working memory

Paul M. Bays

doi:10.1038/s41562-024-01871-2

Representation and computation in visual working memory

2024-06-07

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AI

DOI：10.1038/s41562-024-01871-2

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The ability to sustain internal representations of the sensory environment beyond immediate perception is a fundamental requirement of cognitive processing. In recent years, debates regarding the capacity and fidelity of the working memory (WM) system have advanced our understanding of the nature of these representations. In particular, there is growing recognition that WM representations are not merely imperfect copies of a perceived object or event. New experimental tools have revealed that observers possess richer information about the uncertainty in their memories and take advantage of environmental regularities to use limited memory resources optimally. Meanwhile, computational models of visuospatial WM formulated at different levels of implementation have converged on common principles relating capacity to variability and uncertainty. Here we review recent research on human WM from a computational perspective, including the neural mechanisms that support it. Recent advances are revealing visual working memory representations to be richer than mere imperfect copies of perceptual events. Bays et al. discuss the latest theories of working memory function, capacity and neural basis from a computational perspective.

Representation and computation in visual working memory

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