A Safety and Efficacy Study of Ispronicline (TC-1734-112) in Subjects With Age Associated Memory Impairment (AAMI)

Inclusion Criteria: * Male or female subjects aged 50-80 years. * Lives with a significant other. * Has subjective memory complaints. Verbal verification of this subjective memory complaint will be obtained from the significant other. * Has no severe, uncontrolled medical condition. * If receiving treatment for a medical condition, that treatment has been stable for at least 2 months before entering the trial and to remain stable throughout the trial. Exclusion Criteria * Aged less than 50 years or greater than 80 years. * Lives alone. * Has any medical condition not adequately controlled, or likely to interfere with performance of the study procedures. * Medication for a medical condition has been changed in the last 2 months or during the trial. * Administration of acetylcholinesterase inhibitors and gingko biloba within 2 months prior to entering the study. * Has evidence of depression or anxiety * Meets DSM-IV criteria for Alzheimer's or vascular dementia. * Has participated in an investigational drug trial in the previous 30 days.