ADHS -Gehirne sind wirklich anders gebaut – wir wurden nur vom Lärm geblendet | Wissenschaftler beseitigen die Grauzone, wenn es um graue Substanz in ADHS -Gehirnen geht

From the article: A new [study](https://www.nature.com/articles/s41380-025-03142-6) significantly strengthens the case that attention-deficit/hyperactivity disorder (ADHD) brains are structurally unique, thanks to a new scanning technique known as the traveling-subject method. It isn’t down to new technology – but better use of it.

A team of Japanese scientists led by Chiba University has corrected the inconsistencies in brain scans of ADHD individuals, where mixed results from magnetic resonance imaging (MRI) studies left researchers unable to say for certain whether neurodivergency could be identified in the lab. Some studies reported smaller gray matter volumes in children with ADHD compared to those without, while others showed no difference or even larger volumes. With some irony, it’s been a gray area for diagnostics and research.

Here, the researchers employed an innovative technique called the traveling-subject (TS) method, which removed the „technical noise“ that has traditionally distorted multi-site MRI studies. The result is a more reliable look at the ADHD brain – and a clearer picture of how the condition is linked to structural differences.

Essentially, different hospitals, clinics or research facilities use different scanners, with varying calibration, coils and software. When researchers pool data from multiple sites, they risk confusing biological variation with machine error. Statistical correction tools exist – like the widely used “ComBat” method – but these can sometimes overcorrect, erasing real biological signals along with noise. That’s a big problem for conditions like ADHD, where the predicted structural differences are subtle – so if the measurement noise is louder than the biological effect, results end up contradictory.

The TS method takes a more hands-on approach – basically making the scans uniform across a study group. The researchers recruited 14 non-ADHD volunteers and scanned each of them across four different MRI machines over three months. Since the same person’s brain doesn’t change in that short window, any differences between scans are from the machines themselves. This template served as a sort of neurotypical control, which allowed the researchers to further investigate a much larger dataset from the Child Developmental MRI database, which included 178 „typically developing“ children and 116 kids with ADHD.

I’ve been convinced for a bit from new research and my own experiences (anecdotal, I know) that conditions like ADHD, Autism, and OCD are not just some defect, they are a whole Neuro system difference that affects a lot more than just the way we think. It’s not some dysfunction, I believe it’s just a different type of “wiring”, so to speak, and the dysfunctional aspects come from trying to conform to a world built for the way Neurotypical people are wired.

I’m AuDHD, and in my experience, I function just fine when I am around other Neurodivergent people (particularly other ADHD and Autistic people of course). The barriers in communication drop away, I feel more comfortable, and I don’t have to go against the grain of how I naturally am. We’ve seen this in studies, where ND’s given accommodations for their differences suddenly start to thrive. It’s everything, how we think, how we communicate, and how we move. I also think that is why ND people often struggle to connect with others and are seen as strange, because the human mind is so adept at picking up those small differences that people can just tell something is a bit different about you without you even having done anything particularly weird. I also think that’s why I can pick up on someone being Neurodivergent within minutes of meeting them, I can just intuitively see the signs even though they are often very subtle.

I wonder if what this could mean for adult-onset ADHD. My understanding is that they currently believe it has different causes. I didn’t have ADHD symptoms until my 30s and it became worse in my 40s.