Behavioral evidence for memory replay of video episodes in the macaque

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 23
  • Download : 2
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.
Publisher
ELIFE SCIENCES PUBLICATIONS LTD
Issue Date
2020-04
Language
English
Article Type
Article
Citation

ELIFE, v.9

ISSN
2050-084X
DOI
10.7554/eLife.54519
URI
http://hdl.handle.net/10203/274777
Appears in Collection
BiS-Journal Papers(저널논문)
Files in This Item
elife-54519-v2.pdf(3.3 MB)Download

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0