Bilateral Stimulation

A bilateral stimulation (BLS) tool for therapists. Guide a client’s attention with a smoothly moving ball and optional left/right sound, adjusting speed, pattern and colours as you go. Use it in person, or share it live with a client during online sessions: they follow from their own device, with no account needed.

Set 10 passes00:00

Your client sees only the moving ball — no controls. Everything you change here (speed, pattern, colours, sound) appears on their screen live. Sound plays on the client's own device, so left/right works properly in their headphones. Use “New link” for each client to keep links private.

Speed (passes per second)

Pattern Movement Travel width

Pause at each edge

Vertical position

One pass = one sweep from one side to the other. Around 1 pass per second is a common starting point: go slower for calming and resourcing, faster for processing.

Size

Shape

Ball colour

Background colour

Trail

Guide line Show faint track

Audio Sound Pitch

Volume

Test

My speakers Mute sound on my side

Use stereo headphones (wired is best — Bluetooth can add a delay). For online sessions the sound plays on your client's device; ask them to wear headphones and tap “Test on client”.

Passes per set (0 = continuous)

Gentle start Ease in & out of each set

Count-in 3-second countdown before a set

End-of-set chime Soft chime when a set finishes

Auto-hide controls Hide while running

Saved settings

Settings are remembered on this device and browser. Use the slots for separate set-ups (e.g. calming/resourcing vs processing).

Connecting…

Welcome

This screen shows a moving ball for bilateral stimulation (BLS). Your therapist guides it from their side. If they've asked you to, please put on your headphones now.