Light on the brain: how anesthesia affects pain signals

NCT ID NCT02703090

First seen Jan 05, 2026 · Last updated May 16, 2026 · Updated 19 times

Summary

This study looked at how the brain responds to pain and sound while a person is under general anesthesia. Researchers used a special light-based technique called near-infrared spectroscopy to measure blood flow changes in the brain. 44 healthy volunteers aged 12-30 took part. The goal was to better understand how the brain processes pain during anesthesia, not to test a new treatment.

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Contacts and locations

Locations

  • Boston Children's Hospital

    Boston, Massachusetts, 02115, United States

Conditions

Explore the condition pages connected to this study.