Psychological trauma occurs as the result of an extraordinarily stressful event that diminishes or destroys an individual's sense of security and involves a threat to life or safety. Traumatic experiences exceed the person's ability to cope, and the ability to integrate emotions involved with the experience. It is widely recognized that traumatic experiences contribute to the development of PTSD; however, neuroscience researchers also know the manner in which psychological trauma is associated with functional and even structural changes in the brain. This presentation will describe the neuropsychology of PTSD, and show how neuroimaging demonstrates changes in the amygdala, hippocampus, and prefrontal cortex resulting from trauma. The four important stages in healing from trauma will be discussed as well as treatment recommendations including EMDR and CBT.