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- W4285011284 abstract "Working memory (WM) and timing are generally considered distinct cognitive functions, but similar neural signatures have been implicated in both. To explore the hypothesis that WM and timing may rely on shared neural mechanisms, we used psychophysical tasks that contained either task-irrelevant timing or WM components. In both cases the task-irrelevant component influenced performance. RNN simulations revealed that cue-specific neural sequences, which multiplexed WM and time, emerged as the dominant regime that captured the behavioral findings. Over the course of training RNN dynamics transitioned from low-dimensional ramps to high-dimensional neural sequences, and depending on task requirements, steady-state or ramping activity was also observed. Analysis of RNN structure revealed that neural sequences relied primarily on inhibitory connections, and could survive the deletion of all excitatory-to-excitatory connections. Our results suggest that in some instances WM is encoded in time-varying neural activity because of the importance of predicting when WM will be used." @default.
- W4285011284 created "2022-07-12" @default.
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- W4285011284 date "2022-07-10" @default.
- W4285011284 modified "2023-10-15" @default.
- W4285011284 title "Multiplexing working memory and time: encoding retrospective and prospective information in neural trajectories" @default.
- W4285011284 doi "https://doi.org/10.1101/2022.07.08.499383" @default.
- W4285011284 hasPublicationYear "2022" @default.
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