Predictors of prolonged hospital stay for the treatment of severe neuropsychiatric symptoms in patients with dementia: a cohort study in multiple hospitals.

Background: Long hospitalization is often needed to treat severe behavioral and psychological symptoms of dementia (BPSD), which places heavy demands on hospital resources. Consequently, patients with severe BPSD usually wait for a long time to be admitted. There is a need to identify factors related to long hospitalization to better manage resources of a psychiatric hospital.

Neural basis of fear conditioning induced by video clip: positron emission tomography study.

In patients with post-traumatic stress disorder (PTSD), re-experiencing the trauma is often induced by external cues in the environment. The cues, which were emotionally neutral for the patients before the traumatic event, become fearful ones after the event. This phenomenon is considered to be associated with fear conditioning.