To what extent do we learn from the positive versus negative outcomes of our decisions? The neuromodulator dopamine plays a key role in these reinforcement learning processes. Patients with Parkinson's disease, who have depleted dopamine in the basal ganglia, are impaired in tasks that require learning from trial and error. Here, we show, using two cognitive procedural learning tasks, that Park...

People with diabetes are more likely to be admitted to hospital and have longer stays in hospital than people without diabetes. Data from the National Diabetes Inpatient Audit suggest that people with diabetes experience avoidable prescription errors such as wrong insulin, incorrect doses and omitted doses. These errors result in increased length of stay and harm to the patient. Many of the err...

the undesirable effects and consequences of occupational fatal accidents have placed a great emphasis on applying preventive measures. this study was aimed to analyze and specify the latent causes of occupational fatal accidents in exir chemical plant, urmia - iran in 2008-2009. the analytical tripod-beta method was used. a geographic information system (gis) was then used to determine a list o...