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Daily shift in mouse brain activity (Level A1) — a close up of a bunch of plants

Daily shift in mouse brain activityCEFR A1

10 Dec 2025

Adapted from U. Michigan, Futurity CC BY 4.0

Photo by Wolfgang Hasselmann, Unsplash

Level A1 – Beginner
2 min
77 words
  • Scientists study the brain of mice every single day.
  • They look at many small signals in the brain.
  • Special lights help researchers see the signals.
  • Pictures show when and where signals change.
  • Signals move around inside the brain daily.
  • When mice wake, signals start deep inside.
  • Later the signals move toward the brain surface.
  • The team wants to find signs of tiredness.
  • Such signs could help safety in jobs.
  • The groups share tools and ideas across countries.

Difficult words

  • signala small change that gives information
    Signals
  • researchera person who studies or tests things
    researchers
  • surfacethe outside part or top of something
  • tirednessthe state of feeling very low energy
  • safetythe state of being free from danger
  • shareto give or use something with others

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Have you ever seen pictures of a brain?
  • Would signs of tiredness help at work?
  • Do you like science?

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