Alternating sound tones or clicks in the left and right earphone in turn. The frequency is about 1–2 Hz, the volume comfortable. Especially convenient in teletherapy and when the eyes or hands cannot be used. The mechanism is the same: alternating activation of the auditory areas of both hemispheres supports bilateral processing of information.
Step-by-step guide
- Put the headphones on the client or set up the app for teletherapy
- Check that the volume is comfortable
- Have the client hold the target image in mind
- Start the alternating left–right tones (1–2 Hz)
- After the set: "What is happening?" or "What is the SUD?"
When to use
- Teletherapy — the most convenient method for remote work
- Inability to use vision (blindness, eyes closed by choice)
- Inability to use the hands
- Client preference
Key phrases
Put on the headphones. Hold the image in mind and just let everything happen — I am turning on the sounds.
Follow-up questions
Is the volume comfortable?
What is happening now?
Alternative phrasings
There are special apps with bilateral sounds for teletherapy
Audio files with alternating tones can also be used
Warnings
- ⚠️ Check the volume — sound that is too loud distracts from the image
- ⚠️ The least researched of the three BLS methods
Materials are informational and educational and summarize publicly available scientific sources. They are not medical or psychological advice, are not intended for self-diagnosis or self-treatment, and do not replace consultation with a qualified professional.