EEG-guided binaural beats for relaxation and cognition (Kahathuduwa 2025)
The EEG-guided audio lowered dominant EEG frequency below 8 Hz in 100% of participants (median 7.4 min), while sham reached that state in essentially nobody. Cognitive effects were modest: one significant result (novelty-encoding reaction time, p = 0.039) among several non-significant trends.
The question: Can binaural beats that are retuned in real time from a listener's EEG lower dominant brain-wave frequency and improve cognitive performance?
| Type of study | Randomized trial |
|---|---|
| Who took part | 25 healthy adults |
| What was done | Two 30-minute sessions, EEG-guided binaural beats versus sham. An algorithm used real-time EEG feedback to retune the beat and drive brain state toward low frequencies (targets below 8 Hz and below 4 Hz), instead of using a fixed offset. |
| How much weight it carries | Mixed evidence |
What it found
- Dominant EEG frequency fell below 8 Hz in 100% of participants (median 7.4 min) and below 4 Hz in 96% (median 9.0 min).
- Sham reached those states in essentially nobody.
- Novelty-encoding reaction time was significantly faster (p = 0.039).
- Stop-signal reaction time (p = 0.098), boundary separation (p = 0.065) and inhibitory drift rate (p = 0.067) showed non-significant trends.
Limits
- Small sample (n = 25) of healthy adults in short single sessions.
- Most cognitive outcomes did not reach significance; a single significant result among several trends invites caution about multiple comparisons.
- The method requires live EEG hardware, which ordinary headphone listening does not include.
Where this sits
More in the library on what happens in the brain. For the wider picture, read What are binaural beats?.
This is our plain-language reading of the paper. It is not medical advice, and one study rarely settles a question.
Sources
- Kahathuduwa, C.N., Blume, J., Mani, C., & Dhanasekara, C.S. (2025). Real-Time Electroencephalography-Guided Binaural Beat Audio Enhances Relaxation and Cognitive Performance: A Randomized, Double-Blind, Sham-Controlled Repeated-Measures Crossover Trial. Physiologia, 5, 44. doi.org/10.3390/physiologia5040044