During a traumatic event, the body responds by triggering the flight or fight response, releasing stress hormones like adrenaline and norepinephrine to provide a surge of energy. The heart rate increases, and certain brain functions, such as processing short-term memories, may be temporarily put on hold. In the case of PTSD, the brain becomes stuck in a state of heightened alertness, even after the immediate danger has passed. This ongoing hyperarousal causes the body to continue sending out stress signals, leading to the manifestation of PTSD symptoms. Research indicates that individuals with PTSD have increased activity in the part of the brain responsible for processing fear and emotions. Over time, PTSD can bring about changes in the brain. The area of the brain responsible for memory control may become smaller, potentially affecting memory functions and leading to difficulties in recalling certain aspects of the traumatic event or other memories. These brain changes are part of the complex neurobiological response to trauma and help shed light on the lasting impact of PTSD on brain function and emotional regulation. Understanding these neurological aspects is crucial for developing targeted treatments and interventions to help individuals cope with and recover from PTSD.