King: "We know neurocognitive deficits exist as a result of schizophrenia?"
Dr. Gur: "Yes."
Dr. Gur: "The CAT scan was done in the fall of 2012, following a change in mental status... The CAT scan ruled out any structural lesion... as a consequence of falling off the bed."
It was a "normal" scan.
Dr. Gur: "The [size of the] ventricles, which is the butterfly shape in the middle of the brain... is slightly increased."
Dr. Gur said the CAT scan results were not diagnostic of schizophrenia alone. She wanted an MRI also.
Dr. Gur says the gunman's brain measures were compared to 79 'healthy' individuals. There were "several significant differences."
1. The right frontal orbital part of the brain (important for emotional processing) was 3 standard deviation below healthy people.
2. The amygdala (important hub for emotion processing) was 2 standard deviations below average.
3. The right medial frontal lobe is 2 standard deviations below average.
Dr. Gur interviewed the gunman's parents on Nov. 19, 2014.
Dr. Gur asked the gunman's parents about his behavior as a child. "They indicated a change - there is a variability among children... there was nothing in his behavior to cause them alarm."