dTMS for Subjective Cognitive Decline

Inclusion Criteria: * have a family history of late onset sporadic Alzheimer's disease (AD) as defined by having a first degree relative, living or deceased, with a probable or confirmed diagnosis of AD * have subjective memory decline and concern about memory changes * score 26 or higher on the Montreal Cognitive Assessment (MoCA) * are willing to provide informed consent * are able to follow the treatment schedule * are stable on medications for 2 months and are not expected to change medication during the entire study period (if they are taking medications) * have a satisfactory safety screening questionnaire for TMS * have an informant/study partner who is able to complete study questionnaires regarding the participant Exclusion Criteria: * have a metal plate in their head, except in the mouth (such as an ear implant, implanted brain stimulators, aneurysm clips) * have known increased pressure or a history of increased pressure in their brain, which may increase their risk for having seizures * have a cardiac pacemaker * have an implanted medication pump * have a central venous line * have a significant heart condition * have current depression or a history of any psychotic disorder, bipolar disorder, eating disorder, obsessive compulsive disorder, post-traumatic stress disorder, or dementia other than AD * have a history of substance abuse in the last 6 months * have a history of stroke or other brain lesions * have a personal history of epilepsy * have a family history of epilepsy * are a pregnant or breast-feeding woman * have a history of abnormal MRI of the brain * have significant hearing loss requiring use of hearing aids * have untreated hypo- or hyper-thyroidism * have TMS contraindications * have unstable medical condition(s) * regularly use benzodiazepines or other hypnotics within 2 weeks of randomization