Study to investigate safety, tolerability and pharmacokinetics of a single ascending dose of AZD1704

Exclusion Criteria

• - History of somatic disease/condition that may interfere with the objectives ot the study, as judged by the Investigator. History of seizures, with the exception of single occasions fever induced seizures in childhood.
• - History of previous or ongoing psychiatric disease/condition including psychosis, affective disorder, anxiety disorder, borderline state and personality disorder according to the criteria in the DSM of Mental Disorder, 4th edition
• - History of use of antipsychotic, antidepressant or anxiolytic drugs for the treatment of psychiatric disease or symptoms, prescribed as well as non-prescribed use.