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More brain activity in OCD during a sequence task — Level A2 — A computer generated image of a brain surrounded by wires

More brain activity in OCD during a sequence taskCEFR A2

27 Feb 2026

Adapted from Brown University, Futurity CC BY 4.0

Photo by Bhautik Patel, Unsplash

Level A2 – High beginner / Elementary
2 min
101 words

A new study at Brown University looked at brain activity in people with obsessive-compulsive disorder (OCD) while they did a sequential cognitive task in an MRI scanner.

Participants named the color or the shape of images in a particular order, for example color, color, shape, shape. People with OCD performed the sequence as well as a control group, but brain scans showed extra activity in several regions.

The extra activity appeared in areas tied to motor and task control, working memory, and object recognition. Researchers say that repositioning transcranial magnetic stimulation (TMS) coils to target these regions might improve symptoms.

Difficult words

  • sequentialin a particular order of images
  • cognitiverelated to thinking and mental tasks
  • scannera machine that makes images of the brain
  • participantpeople who take part in a research study
    Participants
  • controla comparison group in a research study
  • memorythe ability to keep and use information
  • regiona part or area of the brain
    regions

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

Discussion questions

  • How would you feel about a brain scan (MRI)?
  • Do you think studying brain activity can help people with disorders? Why?
  • Have you ever done a task in a particular order and found it difficult? Describe it.

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