After brain surgery, one man stopped noticing one side
Original title: How right dorsomedial lesions lead to neglect: A functional network-level framework.
How far along is this research?
- Lab cells
- Animals
- Review
- Tested in people
This was tested in people. That is the most reliable kind of research we share.
This looked at one person before and after surgery, and it was not a treatment.
The short version
A man had surgery for a brain tumor and then began to miss things on one side.
What was studied. Doctors followed one 71-year-old man having surgery for a brain tumor in the right side of his brain. They tested his attention and scanned his brain before and after surgery, and compared him with 20 healthy people of a similar age.
What they found. Before surgery, he showed no sign of missing one side. After surgery, he missed things in the space around him and on his own body. His brain scans showed that his brain networks were less separate from each other, and the biggest change was in a network that helps guide attention.
What this means, and what it doesn't
What it could mean: Trouble noticing one side can show up after surgery in this part of the brain. Knowing that may help doctors watch for it and explain it to patients and families.
What it doesn't mean: This is one man's story, not a test of any treatment, and not a cure. It does not mean surgery in this spot always causes this problem. It does not change the care a doctor can give today. Many more people would need to be studied first.
Source: PubMed, September 28, 2026 · Read the original
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