Medically reviewed by Dr. Kimberly Langdon Cull, M.D. on Sept. 20, 2023 The therapeutic effects of transcranial random noise stimulation and cognitive training on ADHD symptoms are long-lasting, according to a recent study. Attention-deficit/hyperactivity disorder (ADHD), a neurodevelopmental condition that causes inattention, hyperactivity, and impulsivity, affects 5.2% of children globally. Transcranial random noise stimulation (tRNS) uses...