Mild cognitive impairment (MCI) is defined as a stage where there is a slight but noticeable and measurable decline in cognitive abilities such as memory and thinking skills that is greater than normal age-related changes.

The changes while noticeable, do not significantly interfere with daily functioning. Problems with memory, language, thinking and judgment that are common symptoms. Mild cognitive impairment can lead to the more serious decline of dementia including the risk of developing Alzheimer’s disease.  

Research has indicated that TMS may improve memory and delay further deterioration.  

Here is a link to a research article:  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487699/