Visual vs. Auditory: Which Bilateral Modality is Best?

The Case for Visual Stimulation (The Light Bar)

Choosing between visual and auditory bilateral stimulation depends on the user's cognitive load and sensory comfort. Visual stimulation (light bars) is typically more taxing and effective for active reprocessing, while auditory cues (pips) are often better for passive grounding.

When to choose Visual:

• Reprocessing Intense Memories: The high cognitive load of eye movements helps "blur" vivid traumatic imagery more effectively than sound alone.
• Staying Present: Visual tracking keeps you anchored in your physical environment, which can prevent "spacing out" or dissociation.

The Case for Auditory Stimulation (Bilateral Pips)

Auditory BLS involves tones or "pips" that alternate between the left and right ears. This is often the preferred method for users who find visual movement overstimulating or distracting.

When to choose Auditory:

• Deep Work & Focus: Auditory pips are less intrusive than a moving ball, making them ideal for use in the background while working or studying.
• Sensory Sensitivity: If you experience eye strain or headaches from visual tracking, bilateral audio provides the same hemispheric engagement with less physical fatigue.
• Eyes-Closed Grounding: Auditory stimulation allows you to close your eyes and focus purely on internal sensations or breathing exercises.

Can You Use Both at Once?

Yes. Combining visual and auditory stimulation creates a multi-sensory anchor. This "stacks" the input, providing a robust grounding effect that can be particularly helpful during high-stress moments or acute panic.