Short binaural beats, EEG and vigilance: a null result (Goodin 2012)
No. Vigilance reaction times did not differ between beta beats, theta beats and white noise (all p > .27), and EEG spectral power showed no entrainment (beta p = .227, theta p = .625).
The question: Do a few minutes of theta or beta binaural beats entrain brain activity or improve vigilance?
| Type of study | Experiment |
|---|---|
| Who took part | 31 adults aged 18–60 |
| What was done | Theta (7 Hz) and beta (16 Hz) binaural beats on a 400 Hz tone at 70 dB SPL were compared with white noise during a 0-back vigilance task, with 128-channel EEG. Stimulation lasted only 2 minutes per ear per epoch. |
| How much weight it carries | No support found |
What it found
- Vigilance (0-back reaction times) did not differ significantly between beta, theta and white-noise conditions (all p > .27).
- There was no cortical entrainment: neither beta (p = .227) nor theta (p = .625) spectral power differed from control.
- None of the four hypotheses were supported.
- No Big Five personality trait moderated susceptibility to entrainment or vigilance.
Limits
- The authors note that stimulation may have been too short (2 minutes per ear) to drive steady-state entrainment.
- The 0-back task was likely too easy (100% target identification), leaving little room to detect a benefit, and reaction time is only a proxy for vigilance.
- A null result with n = 31 is suggestive, not definitive proof of absence.
- Only two frequencies were tested.
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
- Goodin, P., Ciorciari, J., Baker, K., Carrey, A-M., Harper, M., & Kaufman, J. (2012). A High-Density EEG Investigation into Steady State Binaural Beat Stimulation. PLoS ONE, 7(4), e34789. doi.org/10.1371/journal.pone.0034789