{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T06:15:23Z","timestamp":1772172923738,"version":"3.50.1"},"reference-count":79,"publisher":"Public Library of Science (PLoS)","issue":"3","license":[{"start":{"date-parts":[[2022,3,3]],"date-time":"2022-03-03T00:00:00Z","timestamp":1646265600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["RI:2008741"],"award-info":[{"award-number":["RI:2008741"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["NS116589"],"award-info":[{"award-number":["NS116589"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000002","name":"National Institutes of Health","doi-asserted-by":"publisher","award":["NS125877"],"award-info":[{"award-number":["NS125877"]}],"id":[{"id":"10.13039\/100000002","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Department of Neurobiology, University of California, Los Angeles","award":["Marion Bowen Neurobiology Postdoctoral Grant Program"],"award-info":[{"award-number":["Marion Bowen Neurobiology Postdoctoral Grant Program"]}]}],"content-domain":{"domain":["www.ploscompbiol.org"],"crossmark-restriction":false},"short-container-title":["PLoS Comput Biol"],"abstract":"<jats:p>Converging evidence suggests the brain encodes time in dynamic patterns of neural activity, including neural sequences, ramping activity, and complex dynamics. Most temporal tasks, however, require more than just encoding time, and can have distinct computational requirements including the need to exhibit temporal scaling, generalize to novel contexts, or robustness to noise. It is not known how neural circuits can encode time and satisfy distinct computational requirements, nor is it known whether similar patterns of neural activity at the population level can exhibit dramatically different computational or generalization properties. To begin to answer these questions, we trained RNNs on two timing tasks based on behavioral studies. The tasks had different input structures but required producing identically timed output patterns. Using a novel framework we quantified whether RNNs encoded two intervals using either of three different timing strategies: scaling, absolute, or stimulus-specific dynamics. We found that similar neural dynamic patterns at the level of single intervals, could exhibit fundamentally different properties, including, generalization, the connectivity structure of the trained networks, and the contribution of excitatory and inhibitory neurons. Critically, depending on the task structure RNNs were better suited for generalization or robustness to noise. Further analysis revealed different connection patterns underlying the different regimes. Our results predict that apparently similar neural dynamic patterns at the population level (e.g., neural sequences) can exhibit fundamentally different computational properties in regards to their ability to generalize to novel stimuli and their robustness to noise\u2014and that these differences are associated with differences in network connectivity and distinct contributions of excitatory and inhibitory neurons. We also predict that the task structure used in different experimental studies accounts for some of the experimentally observed variability in how networks encode time.<\/jats:p>","DOI":"10.1371\/journal.pcbi.1009271","type":"journal-article","created":{"date-parts":[[2022,3,3]],"date-time":"2022-03-03T13:55:11Z","timestamp":1646315711000},"page":"e1009271","update-policy":"https:\/\/doi.org\/10.1371\/journal.pcbi.corrections_policy","source":"Crossref","is-referenced-by-count":26,"title":["Encoding time in neural dynamic regimes with distinct computational tradeoffs"],"prefix":"10.1371","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7901-615X","authenticated-orcid":true,"given":"Shanglin","family":"Zhou","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8699-3335","authenticated-orcid":true,"given":"Sotiris C.","family":"Masmanidis","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8528-9231","authenticated-orcid":true,"given":"Dean V.","family":"Buonomano","sequence":"additional","affiliation":[]}],"member":"340","published-online":{"date-parts":[[2022,3,3]]},"reference":[{"issue":"4","key":"pcbi.1009271.ref001","doi-asserted-by":"crossref","first-page":"687","DOI":"10.1016\/j.neuron.2018.03.045","article-title":"The Neural Basis of Timing: Distributed Mechanisms for Diverse Functions","volume":"98","author":"JJ Paton","year":"2018","journal-title":"Neuron"},{"issue":"10","key":"pcbi.1009271.ref002","doi-asserted-by":"crossref","first-page":"755","DOI":"10.1038\/nrn1764","article-title":"What makes us tick? 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