Bilateral Stimulation Research-backed

Combined Visual + Audio BLS

Visual dot synced with alternating left/right audio tones. Dual-channel BLS for clients who benefit from multiple modalities.

This is a reference tool, not a replacement for EMDR therapy. EMDR must be delivered by a trained clinician. If you are using these tools outside of therapy and become distressed, stop, ground yourself, and contact a mental health professional.

Before you start

Photosensitive epilepsy warning: this tool uses sustained horizontal motion.
Headphones required for audio component.
Not recommended for home use without clinician supervision.

Open in fullscreen

⚠ Photosensitive epilepsy and headphone warnings apply. Use in clinician-supervised sessions only.

Speed (Hz) 1.0 Passes / set 24 Tone (Hz) 440 Volume 30%

0 / 24 audio

This tool uses motion by design. If that's uncomfortable, consider the audio-only or butterfly-hug tool instead.

Clinical sources

Shapiro, F. (2018). Eye Movement Desensitization and Reprocessing (EMDR) Therapy: Basic Principles, Protocols, and Procedures, 3rd ed. Guilford Press.

What this is

Combines the moving visual dot and alternating stereo tones into a single synchronized experience. Audio can be toggled on or off without restarting the visual.

When to use it

When multi-modal BLS is desirable — some clients process more effectively with dual channels.
As a fallback if the client starts to dissociate on single-channel BLS; the extra sensory input can help maintain dual attention.

Clinical notes

Visual and audio are driven from the same internal clock — when the dot hits the left edge, a left-panned tone plays; right edge, right tone. Audio can be muted on the fly via the checkbox.