Bilateral Stimulation – A Powerful Ingredient for Therapeutic Integration - Organized through four core processes BLS activates in the brain and body

In the late 1980s, a therapist named Francine Shapiro discovered that by moving her eyes right and left, she could affect the intensity of negative thoughts. More surprising, she found that even hours or days later, the thoughts that previously had been quite disturbing no longer bothered her. This led her to continue to explore, develop, and refine a therapy called Eye Movement Desensitization and Reprocessing (EMDR), which has become one of the most researched and utilized modalities in treating the effects of traumatic incidents. The original EMDR used only bilateral eye movements, but with time it was discovered that tactile BLS, such as tapping or vibrating on either side of the body, or auditory BLS - sound or music that alternates between the two ears - can also be effective therapeutic forms of bilateral stimulation.

Since Shapiro’s initial discovery, other therapeutic techniques have also defined protocols that use the power of bilateral stimulation to effect lasting healing and change, such as Brainspotting, ART (Accelerated Resolution Therapy), and some forms of tapping or EFT−Emotional Freedom Techniques. In my own work, I developed an integrative meta-model called Attuned Integrative Reconsolidation (AIR), which weaves together somatic awareness, parts work, memory reconsolidation, bilateral stimulation, and Torah-based principles of healing and transformation.

When I began learning the power of integrating bilateral stimulation (BLS) into the therapy I was doing with my clients, I was surprised to discover that the Ba’al Shem Tov taught about the power of BLS nearly 300 years earlier. The book Tzavaat HaRivash says:

לפעמים צריך להסתכל לכאן ולכאן, כדי להדביק מחשבתו בבורא יתברך, מפני חומריות גופו שהוא מסך מבדיל על הנשמה:

צוואת הריב"ש דף ט' ע"א

“There are times when one needs to look this way and that in order to attach his thoughts to the Creator. This is because of the physicality of the body, which can be a barrier to the soul.”

This short definition and application of BLS is fascinating and gives us a glimpse of what can be accomplished using BLS. It seems that the Ba’al Shem Tov understood that bilateral eye movements could help the mind overcome the barriers that exist between the soul and the body, creating a more unified experience of prayer and meditation.

Today, clinical research and neuroscience offer us a clearer understanding of what happens when we apply BLS therapeutically. Over time, I’ve witnessed how profoundly BLS can support healing and transformation in my clients. These effects can be grouped into four central domains:

Regulation and resourcing,

Desensitization and intensity reduction,

Reprocessing and reorganization, and

Neural integration and communication.

What follows is a closer look at each of these areas, how they show up in clinical work, how they support the healing process, and what makes them so powerful.

💙 1. Regulation & Resourcing

Creating physiological safety and internal stability

• BLS can create an embodied sense of calm. BLS calms the amygdala and other parts of the brain and body that cause a threat response. Trauma sets off a cascade of neurochemicals and physiological responses known as the fight/flight/freeze effect. Remembering traumas that occurred even many years earlier can retrigger this effect, making it terrifying for the client to process memories. Adding BLS calms this response, helping the client stay present and able to resolve trauma.

  
  

• BLS can help fill in trauma gaps in developmental history. Some trauma is what happened. Some is what didn’t happen - emotional attunement, support, protection. BLS enables imaginal, embodied reparenting experiences that the brain can encode as real. This can soothe deep attachment wounds and provide the foundation for increased self-trust and regulation.

  
  

• BLS can activate and empower the prefrontal cortex. The prefrontal cortex (PFC) is responsible for higher-order thinking, decision-making, and emotional regulation. When the amygdala is calmed, the PFC can take the lead with clear and focused executive function skills.

  
  

• BLS can activate the power of the Anterior Cingulate Cortex (ACC). The ACC modulates emotional reactions and supports cognitive flexibility. BLS helps the ACC communicate more effectively with other brain regions, enabling more balanced emotional processing and helping clients reframe traumatic memories with greater ease.

  
  

• BLS can turn on the ‘selfie cam’. The PFC also monitors internal experience. Most people are more attuned to their external surroundings than their internal world. Effective trauma treatment requires turning inward - becoming aware of what’s happening inside. BLS helps shift awareness inward, supporting emotional presence. Many clients prefer to close their eyes here, making tactile or auditory BLS preferable.

  
  

• BLS can help maintain dual awareness. Effective trauma processing requires activating distressing material and simultaneously maintaining a calm, witnessing presence. BLS supports this balance, likely by enhancing communication between brain hemispheres via the corpus callosum. Too much calm won’t touch or heal trauma; too much activation retraumatizes. BLS helps maintain the “right blend” of activation and regulation.

  
  

• BLS can activate the thalamus. The thalamus is a relay station for sensory input. BLS may help direct attention away from distressing trauma cues toward neutral or pleasant sensory input, making the memory feel safer to recall.

  
  

🌸 2. Desensitization & Intensity Reduction

Soothing emotional charge and physiological arousal

• BLS can tax the working memory. Accessing trauma and then adding visual, auditory, and tactile BLS overloads the working memory, which can decrease emotional intensity. This technique, developed by EMDR therapist Ad DeJong, and called EMDR 2.0 uses distraction to allow the working memory to ‘drop’ the intensity of the distress relatively quickly. This is especially effective for intense shock or life-threatening trauma.

  
  

• BLS can erase or lessen the impact of intrusive images. Disturbing visual input often lodges in the brain and returns unbidden. BLS, especially eye movements, can diminish or even neutralize the intensity of such images. While we don’t yet fully understand how, research, and over 10 years of my own clinical experience, have shown me that this can be life-changing for people exposed to violence or explicit imagery.

  
  

• BLS can stimulate brain activity similar to REM sleep. In REM sleep, we naturally process daily experiences. BLS mimics this state, activating the hippocampus and calming the amygdala, allowing clients to experience vivid, dreamlike processing with full cognitive awareness. These sessions can feel like lucid dreaming, often creating powerful and lasting healing moments.

  
  

🍀 3. Reprocessing & Reorganization

Transforming implicit memory and integrating new meaning

• BLS can unravel a chain of related traumatic experiences. Trauma is rarely isolated. Sometimes clients only feel distress without knowing the origin. BLS helps retrieve and link implicit memories, like tugging one thread and unraveling an entire sleeve, facilitating the processing of multiple related memories as a unit.

  
  

• BLS can feel like transforming an Excel into a PDF. Unprocessed trauma tends to feel alive and reactive, moving through the body and activating survival responses, similar to an Excel file that keeps recalculating itself every time new data is entered. When traumatic memories are accessed and processed with adequate regulation and bilateral stimulation, they can often become more stable and less emotionally volatile.

  
  

In these cases, the memory may feel more like a PDF: the information is still there and accessible, but it is less likely to automatically trigger intense emotional or physiological reactions. The memory no longer “runs in the background,” recalculating threat with each reminder. Instead, it becomes part of a coherent narrative that can usually be recalled with greater distance, choice, and perspective.

That said, memories are not permanently sealed. Under stress or in new relational contexts, they can sometimes be reactivated or require further processing. Still, for many clients, BLS helps shift traumatic memories from being actively destabilizing to being largely integrated, which can make a profound difference in daily functioning and emotional freedom.

• BLS can restore order to our human meaning-making mechanisms. Trauma often jams the gears of our internal filing system. After events like October 7th, accidents, or losses, we may no longer know how to make sense of the world. BLS restores perspective and helps reorganize our internal frameworks so we can live more adaptively in the wake of shattered meaning.

  
  

🔗 4. Neural Integration & Communication

Promoting cross-network dialogue and coherence

• BLS can turn on the mismatch detectors.

  
  

  The brain often holds contradictory beliefs - like “I’m good enough” and “I’m defective.” With BLS, it becomes possible to access and hold both simultaneously, activating the brain’s mismatch detectors (including the right ventrolateral PFC and hippocampus) and opening the door to internal updating. The ACC also helps resolve conflicting beliefs and promotes coherence between previously disconnected neural maps.

  
  

For clients doing parts work, this can feel like two very different parts, each with their own truth, memory, and sense of urgency, finally getting to meet each other. One part might be convinced we’re unworthy and must hide, while another knows we are deeply lovable and longs to be seen. These parts are often rooted in different implicit memory networks that were formed under radically different conditions. When BLS helps hold both experiences at once, with enough regulation and Self-energy, the system begins to reorganize.

Over time, this process leads to more internal harmony, less reactivity, and a felt sense of wholeness. What once felt like separate personalities or inner chaos begins to integrate into a cohesive, compassionate self-narrative.

• BLS can increase flexibility and lower rigidity. Trauma tends to make the brain more rigid, reactive, and survival-driven. BLS helps restore flexibility by reengaging hemispheric communication and adaptive processing. The ACC again plays a role in facilitating integration between emotion, cognition, and somatic experience.

  
  

• BLS strengthens interhemispheric communication. While mismatch detection focuses on resolving inner contradictions, BLS also supports broader integration by enhancing communication between the brain’s two hemispheres. For example, one part of the brain might store emotional fear ("cars are dangerous") while another holds rational knowledge ("most people drive safely"). Without a bridge, these parts stay siloed, leading to confusion, anxiety, or sudden shifts in state. BLS activates the corpus callosum and related structures, helping these brain regions “talk to each other.”

  
  

This can allow clients to feel more internally aligned, to make sense of their experiences not just cognitively or emotionally, but across both domains at once. It becomes easier to hold nuance, stay grounded, and respond from the whole system rather than from a fragmented part.

In addition, BLS can help the brain “unhitch” patterns that were once fused. Sometimes, the system links experiences that don’t inherently belong together, for instance, if early betrayals led to the conclusion that no one can be trusted. BLS allows the client to revisit the original memory with new resources, separating out past danger from present safety. This uncoupling creates freedom: the ability to update beliefs, choose new responses, and live in alignment with current reality rather than outdated neural maps.

• BLS engages implicit learning and repair. Like REM and play states, BLS mirrors the brain’s natural healing mechanisms, nonverbal, body-based, and rhythmic. This can help clients build new emotional and behavioral templates organically and without over-verbalizing.

  
  

In Summary

Bilateral Stimulation (BLS) is more than a technique, it’s a doorway to deep, multi-layered healing. It activates four core processes that support transformation:

🔹 Regulate – Calming the nervous system and resourcing the soul

🔹 Reduce – Softening emotional intensity and desensitizing distress

🔹 Rewire – Updating traumatic memories and reorganizing meaning

🔹 Reconnect – Linking brain networks and harmonizing inner parts

Together, these functions help the system return to its natural state of balance, clarity, and resilience. Whether you’re using EMDR, IFS, AIR, somatic approaches, or spiritual work, BLS can enhance and accelerate healing with greater ease and gentleness.

And perhaps it’s no coincidence that in a generation facing so much trauma, dysregulation, and fragmentation, Hashem in His kindness has allowed modern research to reveal precise, compassionate tools. Tools that help us rewire implicit memories, restore internal trust, and open new pathways for healing and growth, emotionally, spiritually, and relationally.

To learn more about adding BLS skills to your trauma treatment practice, take a look at the Attuned Integrative Reconsolidation training, and let me know if you’d like to hear more.📧 shalvila@gmail.com📱 +972-524242234 (WhatsApp)

כתבה זו מופיעה בעברית כאן: https://www.frumtherapist.co.il/post/emdr-hebrew