After guiding a brain signal, a connection changed the next day
Using a visual display, 20 people tried to direct their brain signal in opposite directions. The next day, one pathway between the two sides showed a localized change.
The key idea
Participants managed to guide a hand-related brain signal, and the next day a connection between the hemispheres showed measurable changes.
The study, in plain language
A screen gave each participant feedback about their own brain activity while they moved a hand. With that feedback, they tried to direct the signals in opposite directions. The team observed what happened during the session and what appeared the next day.
Participants managed to modify activity in the indicated direction. Twenty-four hours later, localized and opposite changes appeared in measures of a pathway connecting the two sides of the brain. Those differences appeared with real activity feedback, not with simulated feedback in the comparison group.
What they found
- Participants managed to guide brain signals linked to hand movement.
- The next day, a measure of the connection between the two sides of the brain changed in opposite directions depending on the condition.
- White-matter changes appeared with feedback from one’s own brain activity, not with another person’s video.
Something to think about
Think about how many things in your body you cannot see in real time. Here, seeing one’s own signal on a screen made it possible to guide it. The study does not show whether the change lasts.
How they studied it
During MRI sessions, each participant moved a hand while trying to modulate a brain signal displayed on a screen. The control group did the same task using a neurofeedback video from a matched participant. The team measured white matter before and 24 hours after each condition. This is an indirect measure and does not show whether the change lasts beyond the next day.
What the study cannot show
- The complete analysis included 20 people and followed changes for only one day. MRI measures indirect signals and may reflect different tissue processes.
- The study does not show that one session produces lasting changes, improves everyday movement, or works as therapy.
The original study
fMRI neurofeedback in the motor system elicits bidirectional changes in activity and in white matter structure in the adult human brain
Source under CC BY 4.0. English adaptation and explanation by PaperFlow, with AI assistance. The text has been reorganized for a general audience; it is not the complete paper and does not imply endorsement by its authors.
One study alone does not represent a field's consensus. Educational content does not replace professional advice. Report a possible error.
