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- W4376642793 abstract "Abstract Perceptual decisions are complete when a continuously updated score of sensory evidence reaches a threshold. In Drosophila , αβ core Kenyon cells (αβ c KCs) of the mushroom bodies integrate odor-evoked synaptic inputs to spike threshold at rates that parallel the speed of olfactory choices. Here we perform a causal test of the idea that the biophysical process of synaptic integration underlies the psychophysical process of bounded evidence accumulation in this system. Injections of single brief, EPSP-like depolarizations into the dendrites of αβ c KCs during odor discrimination, using closed-loop control of a targeted opsin, accelerate decision times at a marginal cost of accuracy. Model comparisons favor a mechanism of temporal integration over extrema detection and suggest that the optogenetically evoked quanta are added to a growing total of sensory evidence, effectively lowering the decision bound. The subthreshold voltage dynamics of αβ c KCs thus form an accumulator memory for sequential samples of information." @default.
- W4376642793 created "2023-05-17" @default.
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- W4376642793 date "2023-05-13" @default.
- W4376642793 modified "2023-10-14" @default.
- W4376642793 title "Transient photocurrents in a subthreshold evidence accumulator accelerate perceptual decisions" @default.
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- W4376642793 doi "https://doi.org/10.1038/s41467-023-38487-5" @default.
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