Neuroscience research shows that structures in the right side/hemisphere of the brain are overactive and acting as if there is an immediate threat in sufferers of PTSD and trauma. The BLAST Technique® utilises precise bi-lateral movements with a light pen (which helps the memory access the left side/hemisphere of the brain) and specific suggestions to the client which helps reprocess the traumatic event so they understand what happened and can remember, but it no longer has any physical or emotional response.