Studies of neural processing show that risk - taking may be associated with reward - related brain activation, with risk - taking behaviors and the opposite of what normally should happen (ie, hypoactivation with disappointment losses). (emedicine.medscape.com)
The boys with comorbid psychopathology also showed hypoactivation in response to rewards, consistent with reward insensitivity. (link.springer.com)
In comparing the patients in initial and follow - up study, the young patients had significantly reduced post-concussion symptom score at follow - up than at the time of the initial exam, but no significant change of the post-concussion symptom score was observed in the older patients, who also showed persistent hypoactivation. (sciencedaily.com)