Brown noise is a low-frequency background sound that helps people with ADHD focus and feel calm. Its millions of views on TikTok suggest that many are eager to know the science behind this psychophysical phenomenon.
ADDitude asked Joel Nigg, Ph.D., a clinical psychologist and a professor in the departments of psychiatry and behavioral sciences at Oregon Health & Science University, to explain the science.is having a moment. People say it helps them to focus and relax, and even lulls them to sleep. What’s the science or theory behind why brown noise seems to work?
Studies on ADHD and brown noise are few and far between. The most common and simple theory is that performance is poor when you are drowsy and when you are panicked . When arousal is optimal, the brain is alert, focused, and effective. The theory is that the level of simulation needed to achieve optimal arousal is different for people with ADHD than it is for neurotypical peers. A portion of people with ADHD benefit fromto maintain alertness.
There’s a second theory called stochastic resonance. The idea is that brown noise helps sharpen the brain’s filtering mechanism — its ability to tamp down distracting information and to sharpen what you’re trying to pay attention to. This psychophysical phenomenon is well documented but the way in which it actually works remains unclear.
Typically, volunteers undertake difficult cognitive tasks, like solving math problems, under different noise conditions in the laboratory, while researchers measure physiological functioning , along withIt’s not costly to download brown noise, and there’s little risk, provided the volume is not excessive . Some research suggests that most people withhave cortical under-arousal and a minority have over-arousal. For those with over-arousal, brown noise might interfere with attention.
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