PET scan studies have found no differences between the brain activity of predatory murderers and the brain activity of "heat of passion" murderers.

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PET scan studies have shown differences in brain activity between predatory murderers, who plan their crimes, and those who commit murder in the "heat of passion." These studies often reveal variations in areas of the brain associated with aggression, impulse control, and emotion regulation, suggesting differing neurological underpinnings between premeditated and impulsive acts of violence.

PET Scan Studies Have Found No Differences Between the Brain