Behavioral evidence for memory replay of video episodes in the macaque
Humans recall the past by replaying fragments of events temporally. Here, we demonstrate a similar effect in macaques. We trained six rhesus monkeys with a temporal-order judgement (TOJ) task and collected 5000 TOJ trials. In each trial, the monkeys watched a naturalistic video of about 10 s compris...
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| Format: | Article |
| Language: | English |
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eLife Sciences Publications Ltd
2020-04-01
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| Series: | eLife |
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| Online Access: | https://elifesciences.org/articles/54519 |
| _version_ | 1811253081697943552 |
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| author | Shuzhen Zuo Lei Wang Jung Han Shin Yudian Cai Boqiang Zhang Sang Wan Lee Kofi Appiah Yong-di Zhou Sze Chai Kwok |
| author_facet | Shuzhen Zuo Lei Wang Jung Han Shin Yudian Cai Boqiang Zhang Sang Wan Lee Kofi Appiah Yong-di Zhou Sze Chai Kwok |
| author_sort | Shuzhen Zuo |
| collection | DOAJ |
| description | Humans recall the past by replaying fragments of events temporally. Here, we demonstrate a similar effect in macaques. We trained six rhesus monkeys with a temporal-order judgement (TOJ) task and collected 5000 TOJ trials. In each trial, the monkeys watched a naturalistic video of about 10 s comprising two across-context clips, and after a 2 s delay, performed TOJ between two frames from the video. The data are suggestive of a non-linear, time-compressed forward memory replay mechanism in the macaque. In contrast with humans, such compression of replay is, however, not sophisticated enough to allow these monkeys to skip over irrelevant information by compressing the encoded video globally. We also reveal that the monkeys detect event contextual boundaries, and that such detection facilitates recall by increasing the rate of information accumulation. Demonstration of a time-compressed, forward replay-like pattern in the macaque provides insights into the evolution of episodic memory in our lineage. |
| first_indexed | 2024-04-12T16:44:28Z |
| format | Article |
| id | doaj.art-ab42495ce2e44d92a0e9ddbb504a47d0 |
| institution | Directory Open Access Journal |
| issn | 2050-084X |
| language | English |
| last_indexed | 2024-04-12T16:44:28Z |
| publishDate | 2020-04-01 |
| publisher | eLife Sciences Publications Ltd |
| record_format | Article |
| series | eLife |
| spelling | doaj.art-ab42495ce2e44d92a0e9ddbb504a47d02022-12-22T03:24:38ZengeLife Sciences Publications LtdeLife2050-084X2020-04-01910.7554/eLife.54519Behavioral evidence for memory replay of video episodes in the macaqueShuzhen Zuo0https://orcid.org/0000-0002-8917-8352Lei Wang1https://orcid.org/0000-0002-6224-6474Jung Han Shin2https://orcid.org/0000-0002-8237-2144Yudian Cai3Boqiang Zhang4Sang Wan Lee5https://orcid.org/0000-0001-6266-9613Kofi Appiah6Yong-di Zhou7Sze Chai Kwok8https://orcid.org/0000-0002-7439-1193Shanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics Ministry of Education, School of Psychology and Cognitive Science, East China Normal University, Shanghai, ChinaShanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics Ministry of Education, School of Psychology and Cognitive Science, East China Normal University, Shanghai, ChinaProgram of Brain and Cognitive Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of KoreaShanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics Ministry of Education, School of Psychology and Cognitive Science, East China Normal University, Shanghai, ChinaShanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics Ministry of Education, School of Psychology and Cognitive Science, East China Normal University, Shanghai, ChinaDepartment of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of KoreaDepartment of Computer Science, University of York, York, United KingdomSchool of Psychology, Shenzhen University, Shenzhen, ChinaShanghai Key Laboratory of Brain Functional Genomics, Key Laboratory of Brain Functional Genomics Ministry of Education, School of Psychology and Cognitive Science, East China Normal University, Shanghai, China; Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, China; NYU-ECNU Institute of Brain and Cognitive Science at NYU Shanghai, Shanghai, ChinaHumans recall the past by replaying fragments of events temporally. Here, we demonstrate a similar effect in macaques. We trained six rhesus monkeys with a temporal-order judgement (TOJ) task and collected 5000 TOJ trials. In each trial, the monkeys watched a naturalistic video of about 10 s comprising two across-context clips, and after a 2 s delay, performed TOJ between two frames from the video. The data are suggestive of a non-linear, time-compressed forward memory replay mechanism in the macaque. In contrast with humans, such compression of replay is, however, not sophisticated enough to allow these monkeys to skip over irrelevant information by compressing the encoded video globally. We also reveal that the monkeys detect event contextual boundaries, and that such detection facilitates recall by increasing the rate of information accumulation. Demonstration of a time-compressed, forward replay-like pattern in the macaque provides insights into the evolution of episodic memory in our lineage.https://elifesciences.org/articles/54519drift diffusion model frameworkevent boundary detectionforward replay-like patternnaturalistic materialtime compression of memory tracestemporal order judgement |
| spellingShingle | Shuzhen Zuo Lei Wang Jung Han Shin Yudian Cai Boqiang Zhang Sang Wan Lee Kofi Appiah Yong-di Zhou Sze Chai Kwok Behavioral evidence for memory replay of video episodes in the macaque eLife drift diffusion model framework event boundary detection forward replay-like pattern naturalistic material time compression of memory traces temporal order judgement |
| title | Behavioral evidence for memory replay of video episodes in the macaque |
| title_full | Behavioral evidence for memory replay of video episodes in the macaque |
| title_fullStr | Behavioral evidence for memory replay of video episodes in the macaque |
| title_full_unstemmed | Behavioral evidence for memory replay of video episodes in the macaque |
| title_short | Behavioral evidence for memory replay of video episodes in the macaque |
| title_sort | behavioral evidence for memory replay of video episodes in the macaque |
| topic | drift diffusion model framework event boundary detection forward replay-like pattern naturalistic material time compression of memory traces temporal order judgement |
| url | https://elifesciences.org/articles/54519 |
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