Why Might a Practitioner Change the Type of Bilateral Stimulation?

Why Might a Practitioner Change the Type of Bilateral Stimulation?

Short Answer: A practitioner may change the type of bilateral stimulation during Eye Movement Desensitization and Reprocessing (EMDR) because eye movements, alternating sounds, and tapping provide different sensory experiences and may be easier to use at different points in a session. A person may find one method easier to follow, more comfortable, or better suited to the setting than another. Changing the type of stimulation does not necessarily mean anything has gone wrong. It is one of the ways bilateral stimulation can be adjusted as the EMDR process unfolds.

Key Takeaways

• EMDR can use eye movements, alternating sounds, or tactile stimulation such as tapping.
• A practitioner may switch methods if another type is easier to follow or fits the situation better.
• Different forms of bilateral stimulation do not necessarily feel or function identically.
• Changing the stimulation can be a normal adjustment during EMDR.
• There is no rule that one person must use the same type throughout every session.
• Eye movements remain one of the most familiar forms of EMDR stimulation, but they are not the only option.

What Types of Bilateral Stimulation Are Used in EMDR?

Bilateral stimulation refers to alternating sensory stimulation used while you also focus on a memory, thought, feeling, image, or body sensation.

Common forms include:

• Eye movements: Following a visual target as it moves back and forth
• Auditory stimulation: Listening to tones or sounds that alternate between the left and right ears
• Tactile stimulation: Feeling alternating taps, pulses, or other touch-based stimulation

The EMDR International Association recognizes eye movements, auditory stimulation, and tactile stimulation as forms of bilateral stimulation used within EMDR.

Because more than one method is available, a practitioner can change the type rather than treating the original choice as permanent.

Why Might a Practitioner Switch From Eye Movements to Tapping?

One simple reason is that tapping may be easier to follow at that moment.

Eye movements require you to visually track a moving target. If maintaining that visual focus is awkward or distracting, tactile stimulation may provide another way to continue the dual-attention task.

Tapping also creates a different sensory experience. Instead of following movement with your eyes, you notice alternating physical sensations.

EMDR training standards specifically include circumstances in which alternatives to eye movements may be needed and identify taps and tones as recognized options.

The switch is therefore not necessarily a major change in the EMDR process. It can simply be a change in how the bilateral stimulation is delivered.

Why Might a Practitioner Switch to Sounds?

Alternating sounds may be useful when auditory stimulation is easier to use than visual or tactile stimulation.

For example, tones can alternate between the left and right ears while you continue focusing on the material being processed.

This changes the sensory channel being used without changing the basic idea of the dual-attention task.

Online EMDR can also make auditory stimulation especially practical because alternating tones can be delivered digitally. EMDR International Association guidance for online sessions describes both screen-based visual stimulation and alternatives such as tapping or electronically delivered tones.

Why Might Someone Prefer One Type Over Another?

People can respond differently to visual, auditory, and tactile tasks.

One person may find eye movements easy and natural.

Another may prefer tapping because it feels simpler to follow.

Someone else may find alternating sounds less distracting than watching a visual target.

These differences do not necessarily indicate that one method is objectively better.

The practical question is often whether the stimulation allows the person to stay engaged with both the task and the memory or other material being processed.

People working with memories connected to childhood trauma may also find that one form of bilateral stimulation feels easier to follow than another.

Can the Type Change During the Same Session?

Yes.

EMDR training materials recognize changing bilateral dual-attention stimulation as one possible adjustment during processing.

A practitioner might begin with eye movements and later use tapping or sounds.

The reverse can happen as well.

EMDR does not require every set in a session to use exactly the same sensory method.

What matters is that the stimulation continues to support the dual-attention process while the person remains engaged with what they are working on.

Does Changing the Type Mean the First Method Was Not Working?

Not necessarily.

A practitioner may change the stimulation simply because another method seems more suitable at that point.

EMDR processing is not static. The memory, thoughts, emotions, images, and body sensations being noticed can change from one set to another.

The way bilateral stimulation is delivered can also be adjusted.

EMDR training standards describe changes in bilateral stimulation as one of several possible interventions when processing needs to be modified.

That makes adjustment part of the flexibility of the process rather than evidence that the previous method was automatically wrong.

Someone processing experiences related to PTSD may also notice that the preferred type of stimulation changes as different material comes up.

Do Eye Movements, Sounds, and Tapping Work Exactly the Same Way?

Research does not support assuming that they are identical.

They all provide forms of bilateral or dual-attention stimulation, but they engage different senses.

Some experimental research has also found differences between types of stimulation. For example, one study found effects from bilateral eye movements and tactile stimulation on memory retrieval but not from the auditory condition used in that experiment.

Another pilot study has compared different patterns of auditory and kinesthetic stimulation during EMDR, reflecting the continuing research into whether different forms produce different effects.

So it is more accurate to say that several forms are used in EMDR than to claim they have been proven completely interchangeable.

Why Might a Practitioner Change the Type if Processing Feels Stuck?

Sometimes EMDR processing stops changing noticeably for a period.

EMDR training standards describe changing bilateral dual-attention stimulation as one possible intervention when processing is ineffective or blocked.

That might involve changing:

• Eye movements to tapping
• Eye movements to sounds
• Sounds to tapping
• One sensory method back to another

The purpose is not to guarantee a particular reaction.

It is simply one way of changing the task when the current approach is no longer producing much movement in the processing.

Can Physical Comfort Affect the Choice?

Yes.

Different stimulation methods place different demands on the body and senses.

For example, sustained visual tracking may not be the preferred method for someone who finds that kind of eye movement uncomfortable during a particular session.

In those circumstances, auditory or tactile stimulation may provide another option.

EMDR materials discussing adaptations for people with certain neurological histories also describe situations in which changing from visual to auditory or tactile stimulation may make the process more manageable.

This does not mean eye movements themselves are generally problematic. It simply illustrates why having more than one stimulation method can be useful.

Can Age or Setting Affect the Type of Bilateral Stimulation?

Yes.

Different settings may make different methods easier to use.

For example, EMDR practitioners working with children may adapt bilateral stimulation through tapping, movement, toys, or other age-appropriate activities while still maintaining the alternating or dual-attention structure.

Online sessions may also use different methods from in-person sessions because visual targets, tones, or self-tapping can be delivered through technology or instructions.

The form can therefore be adapted while remaining part of the larger EMDR process.

What About Self-Guided EMDR?

Different forms of bilateral stimulation can also be relevant in online and self-guided EMDR.

With the Virtual EMDR self-guided program, bilateral stimulation is built into the online experience, and users can select and adjust available stimulation settings themselves.

This reflects the same general principle seen in therapist-guided EMDR: bilateral stimulation is not limited to one fixed sensory method.

The specific options available may differ by program, but the stimulation can be adjusted rather than assuming that everyone must use the same format every time.

Conclusion

A practitioner may change the type of bilateral stimulation because EMDR can use more than one sensory method.

Eye movements, alternating sounds, and tapping all provide ways to combine attention to a memory or other focus with another task. A practitioner may switch between them because one method is easier to follow, fits the setting better, or provides a useful change as processing unfolds.

Changing the type does not automatically mean that the previous method failed or that something is wrong.

It is better understood as one of the adjustable parts of EMDR. The stimulation can change while the broader process of focusing, noticing, reprocessing, and checking what comes up remains the same.