If you struggle with sudden bouts of anxiety, hypervigilance, or “overreacting” to small stressors, you might feel like your brain is working against you. In the world of EMDR (Eye Movement Desensitization and Reprocessing) therapy, we look at this differently. We see a system that is innately designed for survival, but perhaps one that is currently “stuck” in a past loop.
The AIP Model: Your Brain’s Natural Healing Drive
The foundation of EMDR is the Adaptive Information Processing (AIP) model. This model suggests that our brains are physically geared toward health and integration (Shapiro, 2017). Just as your skin heals after a physical cut, your mind naturally tries to “digest” or process experiences to keep you safe and functional.
When your threat system—specifically the amygdala—is triggered, it’s not a sign of a “broken” brain. It is an evolutionary masterpiece doing its job: identifying potential danger based on your previous life experiences (Solomon & Shapiro, 2008).
Why the System Stays “On”
Sometimes, when we experience something overwhelming or traumatic, the information doesn’t get processed correctly. It becomes “frozen” in its raw, emotional, and sensory form.
- The Original Intent: During a past stressful event, your threat system activated to save you. It recorded the smell, the sound, and the physical tension of that moment so you could avoid it in the future (Lanius et al., 2010).
- The Modern Glitch: Because that memory is stored in an unprocessed state, a modern-day trigger—like a specific tone of voice or a crowded room—can trip the alarm. Your brain doesn’t realize the event is over; it reacts as if the threat is happening right now (Hase et al., 2017).
The Anatomy of the Response
Your threat system uses a specific biological “playbook” to ensure you survive, often bypassing the logical parts of the brain entirely:
- The Alarm (Amygdala): Scans the environment for matches to past danger.
- The Shutdown of Logic (Prefrontal Cortex): To save time, your “thinking brain” goes offline. This is why you can’t simply “reason” yourself out of a panic attack (Lanius et al., 2010).
- The High-Speed Highway (Nervous System): Your body enters Fight, Flight, or Freeze, causing the physical sensations of racing heart or shallow breath (Hase et al., 2017).
The EMDR Shift: We don’t try to “fix” the threat system. Instead, we use bilateral stimulation to help the brain finally process those old, frozen memories. Once the brain understands that the danger is in the past, the threat system can naturally return to its baseline “rest and digest” state (Shapiro, 2017).
You Are Not “Too Sensitive”
If your system is highly reactive, it simply means your internal “security guard” is incredibly diligent. By using EMDR to process the underlying memories, we can update your security guard’s manual, helping it distinguish between a past trauma and a present-day inconvenience.
Your body is not your enemy. It is a survivalist.
Jordan Nodelman, LCSW is an Independent, Licensed Clinical Social worker in Florida, with a practice that sees patients in Florida, DMV-Area and Vermont.
- Hase, M., Schallmayer, S., & Sack, M. (2017). The effects of EMDR on the somatic level: A backward glance. Frontiers in Psychology, 8, 1023. https://doi.org/10.3389/fpsyg.2017.01023
- Lanius, R. A., Frewen, P. A., Vermetten, E., & Yehuda, R. (2010). Fear conditioning and early life vulnerabilities: Two distinct pathways of emotional dysregulation and brain dysfunction in PTSD. The American Journal of Psychiatry, 167(6), 640–647. https://doi.org/10.1176/appi.ajp.2010.09121733
- Shapiro, F. (2017). Eye Movement Desensitization and Reprocessing (EMDR) therapy: Basic principles, protocols, and procedures (3rd ed.). Guilford Press.
- Solomon, R. M., & Shapiro, F. (2008). EMDR and the Adaptive Information Processing model: Potential mechanisms of change. Journal of EMDR Practice and Research, 2(4), 315–325. https://doi.org/10.1891/1933-3196.2.4.315
