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Frontier Science · TOPIC v3

Why Do Memories Persist When the Brain Keeps Changing?

What supports memory when synapses change?

Read article → Why Do Memories Persist When the Brain Keeps Changing?

2026-09-07 11:00:45.083 UTC · Last recorded update

CURRENT READING

Compare sleep, representational drift and selective synaptic perturbation to investigate changes compatible with memory.

Recorded editorial state, not a maturity score

Retention in hibernationRecorded
Sleep and ongoing changeRecorded
Tolerated changesUnverified
Readout testsUnverified

Additional source checked · v2 → 3

Updated the related analysis after further source checks. This is not a newly announced trial or experiment.

Permanent link to this revision ↗

01 / WHAT WE TRACK

What supports memory when synapses change?

02 / EVIDENCE & TECHNOLOGY

Artificial hibernation / sleep / engrams / representational drift / population coding

Evidence: OIST ↗Norimotoら、Science、2018 ↗Liら、Nature Neuroscience、2017 ↗Driscollら、Cell、2017 ↗Ruleら、eLife、2020 ↗Hayashi-Takagiら、Nature、2015 ↗Srivastavaら、JMLR、2014 ↗

03 / EDITORIAL READING

Persistent memory need not require every connection to remain identical. Sleep and everyday updating help frame the question: which circuit changes preserve the ability to retrieve the same content?

04 / WHAT REMAINS UNKNOWN

Hibernation, sleep and dropout are different manipulations. Compare the components that change, the function that persists, and the conditions of readout.

05 / NEXT CHECK

Matched perturbations with different targets, fixed versus adaptive readout, and retention with or without relearning.

A hypothesis to keep honest

HYPOTHESIS · NOT YET TESTED

Memory consistency may depend less on fixed individual synapses than on preserved population relationships and the mechanisms that read them out.

What would change our view: Compare matched perturbations with different targets, fixed versus adaptive readouts, and conditions with or without relearning. Identify when retrieval of the same content fails.

A prospective test proposal, not a prediction score. A graph connection does not validate this hypothesis.

Linked people & organizations

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INSTITUTION / INFRASTRUCTUREOIST ↗

Research institution for memory and measurement work.

Evidence: OIST ↗

RESEARCHERKazumasa Z. Tanaka ↗

Head of OIST Memory Research Unit.

Evidence: OIST ↗

RESEARCHERYu-Ju Lin ↗

First author of the memory-retention study.

Evidence: OIST ↗Lin et al. / Science ↗

RESEARCHERTakeshi Sakurai ↗

University of Tsukuba collaborator in artificial-hibernation research.

Evidence: OIST ↗

Latest card updates

Latest 5 · editorial record dates

v3 · 2026-09-07 11:00:45.083 UTCAdditional source checked
Updated the related analysis after further source checks. This is not a newly announced trial or experiment.
Reading at the time: Compare sleep, representational drift and selective synaptic perturbation to investigate changes compatible with memory.

Earlier updates (0)

Earlier entries will appear here once more than five reader-facing revisions have accumulated.

Source-event timeline (different from editorial revisions)

2020-06-11Recorded event
A neural circuit for inducing a hibernation-like state is published.
Sources: Takahashi et al. / Nature ↗
2026-08-13Recorded event
The artificial-hibernation memory study is published.
Sources: Lin et al. / Science ↗

Historical events were assembled through source research. They do not imply the magazine tracked them at the time.

Background readings

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