After making music, adults in London addiction treatment reported weaker cravings in a 16-person EEG pilot

Sixteen adults took part in the Anglia Ruskin University pilot, divided between the two arms ^[1][2][3]. An even split would put eight people in each ^[1]. That is few enough for one or two participants having an unusual day to move a group average. The university's account does not give the actual split, the effect sizes, or whether the patients whose frontal beta fell most were the ones whose cravings fell most.

That last point decides whether the brain-marker idea holds. Frontal beta, according to the account, runs high during active substance craving ^[7], so a dampening after music-making is the direction you would expect if craving eased. A signal a clinic could rely on has to move with craving inside each patient, though. Two group averages moving the same way is a weaker result.

The thing this doesn't tell you is whether music itself lowered the craving. The comparison arm received routine treatment alone ^[3]. The music arm got routine treatment plus sessions with a therapist, instruments and, in the group sessions, other people ^[4][5]. Craving was self-reported on the Craving Thermometer immediately after sessions, as a present-moment rating ^[6]. Nobody can be blinded to whether they just spent a session on drum pads, so attention, company and novelty remain live explanations alongside the music.

The alpha result carries more interpretation. The team reports statistically significant changes in frontal alpha asymmetry and takes them to mean patients were processing negative feelings better, including the anger and frustration that often precede relapse ^[8]. The step from an EEG asymmetry to a patient handling anger is the authors' inference, as the account presents it ^[8].

The design choice I admire is where they did it. The team turned a room at the London clinic into a pop-up recording studio and portable EEG lab, then recorded people actively playing percussion, guitars, keyboards and music production software ^[4][5]. The account calls it the first study to record real-time EEG during music therapy for substance use disorders ^[9]. Music therapy has long been used alongside addiction rehabilitation, but objective neurophysiological data on its effects has been scarce, the account says ^[13].

"What makes our new study particularly important is that, for the first time, we combined participants' own experiences with recordings of brain activity, allowing us to see how the therapy is influencing those neural processes that are associated with recovery," said Jörg Fachner, the senior author and co-director of the university's Cambridge Institute for Music Therapy Research ^[10]. His group's earlier Cochrane Review, he said, highlighted how music therapy "can reduce cravings and improve people's motivation for change" ^[11].

Neuroscience News ran the study under the headline "Making Music May Rewire the Addicted Brain" ^[12]. Both reported outcomes were measured around a course of six weekly sessions ^[3][6][7]. Durable rewiring is a claim that design is too short to test. I think the frontal beta finding is the one to carry into a larger trial, provided that trial ties each patient's EEG to that same patient's craving.