A post making the rounds argues that ADHD "may not simply be a problem of not paying attention," citing an fMRI study that scanned teenagers' brains while they listened for target sounds among routine ones. Most viral science posts get the citation vague or missing entirely. This one names the authors, the journal and the year, and the paper is real: Stevens, Pearlson and Kiehl, published in the American Journal of Psychiatry in 2007.
The Study Behind the Post
The researchers scanned 46 boys aged 11 to 18: 23 diagnosed with combined-type ADHD (the form involving both inattention and hyperactivity-impulsivity) and 23 demographically matched boys without ADHD. Each completed a three-stimulus auditory oddball task in the scanner - a classic paradigm where a frequent, boring sound plays over and over, occasionally interrupted by either a target sound (something you are told to respond to) or a novel sound (something unexpected that was never explained in advance).
Same Brain for Routine, Different Brain for the Unexpected
The post's core claim matches what the abstract actually reports: on the target-detection part of the task, the ADHD group's brain activity looked broadly similar to the control group's. The difference showed up specifically when a novel, unexpected sound appeared. There, the ADHD group showed reduced activity in brain regions tied to attentional orienting, working memory, and shifting attention toward something new, exactly the network the post describes. This distinction, similar for the expected, different for the unexpected, is the paper's actual finding, not an exaggeration of it.
The One Number We Could Not Confirm
The post gives a specific figure: the ADHD group activated 13 of 31 brain regions involved in novelty processing, against 23 of 31 in the control group. We could not independently verify this exact count. The full results tables sit behind a journal paywall, and only the abstract was accessible to us. The number is plausible, specific and non-round in the way a real results table tends to be, and nothing we found contradicts it, but we want to be direct about what we checked and what we did not: the general pattern (reduced novelty-related activation across a meaningful share of the relevant regions) is well supported; the precise 13-versus-23 count comes from the study and the post, not from our own reading of the primary data.
Slower and Less Consistent, Not Simply Absent
Behaviourally, the ADHD group's responses were, in the authors' own words, "highly variable and slow." That detail matters: it points toward a brain that processes novelty inconsistently rather than one that has simply switched off. A test that only measured average speed would miss this. Variability itself, not just the mean, was part of what distinguished the groups.
The Limits, and the Post Says So Itself
This is where the post is more careful than most: it explicitly states its own limitation, a relatively small study of boys with combined-type ADHD, and that findings should not be generalised to everyone with ADHD. That caveat is accurate and worth taking seriously. Girls, adults, and other ADHD presentations (primarily inattentive, primarily hyperactive-impulsive) were not studied here. It is also worth knowing this is a 2007 paper: a foundational piece of evidence in this specific line of research, not a new discovery.
Why the Reframe Matters
"Not paying attention" implies a switch stuck in the off position. What this study actually points to is closer to a switch that responds unevenly, and specifically struggles to reorient toward the unexpected. That distinction has practical weight: environments that minimise unpredictable interruptions, and routines that make important cues less "novel" and more expected, are a more precise response than simply asking someone to try harder to focus.
If This Matches Your Experience
A single brain-imaging study cannot diagnose anyone. If the description, fine with routine, thrown off by the unexpected, sounds like you, a validated questionnaire is the next useful step. The ASRS-v1.1 takes about 10 minutes and is free.
Source: Stevens MC, Pearlson GD, Kiehl KA. "An fMRI Auditory Oddball Study of Combined-Subtype Attention Deficit Hyperactivity Disorder." American Journal of Psychiatry, 2007;164(11):1737-1749. DOI 10.1176/appi.ajp.2007.06050876. The specific 13-of-31/23-of-31 region count is attributed to the study and the social post; FindYourNeurotype could only access the abstract, not the full results tables.