A Trial Investigating the Effect of Acute Hypoglycaemia on Cognitive Function and Brain Activation Patterns in Subjects With Type 1 Diabetes

Each subject will be randomly allocated to an experimental visit sequence consisting of a hypoglycaemic glucose clamp followed by euglycaemic glucose clamp (using i.v. infusion of human soluble insulin (Actrapid®)) or vice versa separated by at least 21 days. Each visit includes an overnight stay. For each of the two conditions (euglycaemia and hypoglycaemia) cognitive performance will be assessed by a validated cognitive test