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open_questions › What resolves this contention: Whether single-area monkey PFC delay activity is well described by a single bump-attractor (diffusing/decaying) model: Wimmer et al. argue yes; Spaak et al. find cell-specific turn-off times that exceed canonical bump-attractor dynamics and suggest multiple parallel attractors instead. / Our results support a diffusing bump representation for spatial working memory instantiated in persistent prefrontal activity. / These dynamics are more complex than the dynamics of a canonical bump attractor network model (either decaying or nondecaying) but more constrained than the dynamics of fully heterogeneous memory models. › diff

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