Home brain stimulation plus gaming: Feasible, but effective?

Clinical takeaway: Home-based transcranial direct current stimulation (tDCS) combined with gamified cognitive control training appears feasible and well tolerated for patients with major depressive disorder, but this approach should not be adopted routinely because it did not improve depressive symptoms more than a rigorously designed sham control.

Interest in home-delivered neuromodulation has grown as clinicians seek scalable, accessible options for depression, particularly for patients who do not fully respond to medication or psychotherapy. Prior studies of tDCS have produced mixed results, and researchers hoped pairing brain stimulation with cognitive training might enhance antidepressant effects.

In the multinational DiSCoVeR randomized trial, investigators enrolled 109 adults with major depressive disorder at sites in Germany, Israel, and Latvia and assigned them to 6 weeks of home-based treatment with either active tDCS plus a cognitive-training video game or sham stimulation plus a control game. Participants completed 30 planned sessions after 1-5 instructional clinic visits.

The study met its primary feasibility endpoint. Nearly 79% of participants completed at least 20 of the 30 prescribed sessions, and almost 90% of the nearly 2,800 sessions initiated were completed successfully. Adverse events were similar between groups, supporting the practicality of delivering this relatively complex intervention at home.

Depression symptoms improved substantially in both groups, but active treatment offered no advantage. Montgomery-Åsberg Depression Rating Scale scores fell by an average of 7.3 points in the active-treatment group and 8.2 points in the control group. About 20% of active-treatment participants achieved a 50% or greater reduction in symptoms, compared with 39% of controls; remission rates were likewise numerically higher in the control group.

Researchers also found that participants who believed they were receiving the control intervention tended to improve less, regardless of their actual assignment, highlighting the potential influence of expectations in depression trials.

“Both groups improved substantially, and that is the finding I keep returning to,” senior author Mor Nahum said. “We still have a great deal to learn about what is actually driving improvement in depression.”

Source: Dechantsreiter E, et al. (2026 Oct 19) JAMA Netw Open. Home Transcranial Direct Current Stimulation With Gamified Cognitive Control Training for Depression: A Randomized Clinical Trial