Human replay spontaneously reorganizes experience
Knowledge abstracted from previous experiences can be transferred to aid new learning. Here, we asked whether such abstract knowledge immediately guides the replay of new experiences. We first trained participants on a rule defining an ordering of objects and then presented a novel set of objects in...
| Hlavní autoři: | , , , |
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| Médium: | Journal article |
| Jazyk: | English |
| Vydáno: |
Elsevier
2019
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| _version_ | 1826302160441180160 |
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| author | Liu, Y Dolan, R Kurth-Nelson, Z Behrens, T |
| author_facet | Liu, Y Dolan, R Kurth-Nelson, Z Behrens, T |
| author_sort | Liu, Y |
| collection | OXFORD |
| description | Knowledge abstracted from previous experiences can be transferred to aid new learning. Here, we asked whether such abstract knowledge immediately guides the replay of new experiences. We first trained participants on a rule defining an ordering of objects and then presented a novel set of objects in a scrambled order. Across two studies, we observed that representations of these novel objects were reactivated during a subsequent rest. As in rodents, human "replay" events occurred in sequences accelerated in time, compared to actual experience, and reversed their direction after a reward. Notably, replay did not simply recapitulate visual experience, but followed instead a sequence implied by learned abstract knowledge. Furthermore, each replay contained more than sensory representations of the relevant objects. A sensory code of object representations was preceded 50 ms by a code factorized into sequence position and sequence identity. We argue that this factorized representation facilitates the generalization of a previously learned structure to new objects. |
| first_indexed | 2024-03-07T05:43:20Z |
| format | Journal article |
| id | oxford-uuid:e65b30f2-1d02-4c8c-a019-bc2a0bd32e71 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:43:20Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:e65b30f2-1d02-4c8c-a019-bc2a0bd32e712022-03-27T10:30:25ZHuman replay spontaneously reorganizes experienceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e65b30f2-1d02-4c8c-a019-bc2a0bd32e71EnglishSymplectic Elements at OxfordElsevier2019Liu, YDolan, RKurth-Nelson, ZBehrens, TKnowledge abstracted from previous experiences can be transferred to aid new learning. Here, we asked whether such abstract knowledge immediately guides the replay of new experiences. We first trained participants on a rule defining an ordering of objects and then presented a novel set of objects in a scrambled order. Across two studies, we observed that representations of these novel objects were reactivated during a subsequent rest. As in rodents, human "replay" events occurred in sequences accelerated in time, compared to actual experience, and reversed their direction after a reward. Notably, replay did not simply recapitulate visual experience, but followed instead a sequence implied by learned abstract knowledge. Furthermore, each replay contained more than sensory representations of the relevant objects. A sensory code of object representations was preceded 50 ms by a code factorized into sequence position and sequence identity. We argue that this factorized representation facilitates the generalization of a previously learned structure to new objects. |
| spellingShingle | Liu, Y Dolan, R Kurth-Nelson, Z Behrens, T Human replay spontaneously reorganizes experience |
| title | Human replay spontaneously reorganizes experience |
| title_full | Human replay spontaneously reorganizes experience |
| title_fullStr | Human replay spontaneously reorganizes experience |
| title_full_unstemmed | Human replay spontaneously reorganizes experience |
| title_short | Human replay spontaneously reorganizes experience |
| title_sort | human replay spontaneously reorganizes experience |
| work_keys_str_mv | AT liuy humanreplayspontaneouslyreorganizesexperience AT dolanr humanreplayspontaneouslyreorganizesexperience AT kurthnelsonz humanreplayspontaneouslyreorganizesexperience AT behrenst humanreplayspontaneouslyreorganizesexperience |