J Physiol March 2011 PMID 21224217

The human circadian system adapts to prior photic history.

Anne-Marie Chang, Frank A J L Scheer, Charles A Czeisler

Mentions

69
Peak: 8 in Jul 2022
across 3 sources since Jul 2021

Extended reach

262,198
potential audience

Total likes

1,215

Video views

56,303

Mentions per month

Jul 2021 – Mar 2025

Where it's discussed

  • News57 articles
  • X / Twitter10 posts
  • YouTube2 videos

AI synopsis

What people are saying

Discussions show a high level of interest and agreement, with posts emphasizing the importance of circadian adaptability, such as 'solidifies the plasticity involved with circadian biology' and praise like 'Wild.' Some posts mention how this research informs the design of circadian tracking apps, indicating engagement with real-world applications, while the overall tone underscores the potential impact of these findings on sleep health and therapies.

AgreementStrong agreement

Most comments express support or appreciation for the research, highlighting agreement with its findings and implications.

InterestHigh interest

Posts demonstrate high interest, mentioning the significance of circadian plasticity and potential applications in sleep management.

EngagementModerate engagement

While some posts are supportive and brief, others reference the study directly or discuss related tools, indicating active engagement.

ImpactHigh impact

The enthusiastic tone and focus on practical applications suggest that users believe this research could significantly influence sleep health and circadian biology.

Abstract in brief

  • Light is the main trigger for aligning our internal biological clock to the 24-hour day, and factors like the timing, intensity, and color of light can influence how our circadian system responds.
  • Previous research suggests that exposure to light can affect melatonin suppression, but this study reveals that a history of very dim light exposure actually enhances the system’s phase-shifting response to subsequent light stimuli.
  • This finding indicates that our circadian system is adaptively more sensitive based on prior light exposure, which could be important for improving light therapy treatments for sleep and circadian disorders.

Top posts

Most liked on X and Bluesky
Mg2+ Papi, the BowTied Mg2+
@Grimhood · X

The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 24 likes · 8 shares · 133,454 followers View post →
Jason Jin
@jasonljin · X

@hubermanlab "The human circadian system adapts to prior photic history" Great study looking at this specific effect: https://t.co/qqCSkNkngw We've been designing the @joincrescentco app with experts to help you better track your circadian rhythms according to your unique sleep profile. https://t.co/MXSrkof9yL

Nov 30, 2022 · 9 likes · 3,125 followers View post →
Zaid K. Dahhaj
@zaidkdahhaj · X

@AbudBakri Alright these papers are very interesting. I’m on board because this solidifies the plasticity involved with circadian biology, which we often forget about Wild. Thanks brother For anybody who wants the papers https://t.co/jBVTkks58V https://t.co/xbvSAh586S

Mar 8, 2025 · 5 likes · 49,268 followers View post →
haziq jual ayam tak cucuk
@Haziqmahmur90an · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 23, 2022 · 8 shares · 12,610 followers View post →
PhiloKing
@EsotericTea · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 3,723 followers View post →
DrRPalmquist
@DrPalmquist · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 3,161 followers View post →

All mentions

Zaid K. Dahhaj
@zaidkdahhaj · X

@AbudBakri Alright these papers are very interesting. I’m on board because this solidifies the plasticity involved with circadian biology, which we often forget about Wild. Thanks brother For anybody who wants the papers https://t.co/jBVTkks58V https://t.co/xbvSAh586S

Mar 8, 2025 · 5 likes · 49,268 followers View post →
Jason Jin
@jasonljin · X

@hubermanlab "The human circadian system adapts to prior photic history" Great study looking at this specific effect: https://t.co/qqCSkNkngw We've been designing the @joincrescentco app with experts to help you better track your circadian rhythms according to your unique sleep profile. https://t.co/MXSrkof9yL

Nov 30, 2022 · 9 likes · 3,125 followers View post →
æiou
@sincerejaee · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 23, 2022 · 8 shares · 48 followers View post →
haziq jual ayam tak cucuk
@Haziqmahmur90an · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 23, 2022 · 8 shares · 12,610 followers View post →
izzatt
@izzattzuhair · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 149 followers View post →
Jon Nödtveidt
@Chels4insight · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 68 followers View post →
x
@asphalt_botany · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 162 followers View post →
PhiloKing
@EsotericTea · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 3,723 followers View post →
DrRPalmquist
@DrPalmquist · X

RT @Grimhood: The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 8 shares · 3,161 followers View post →
Mg2+ Papi, the BowTied Mg2+
@Grimhood · X

The human circadian system adapts to prior photic history https://t.co/uiqBQemLsv https://t.co/CkpGxuFhlT

Jul 22, 2022 · 24 likes · 8 shares · 133,454 followers View post →