2.2. Participants
RECRUITMENT
The local widely-read newspaper (Kahoku weekly) was used for subject recruitment, and 91 women and men living in the Miyagi prefecture, aged 65–80 years, visited the test center for screening. Sixty subjects were recruited according to the inclusion and exclusion criteria. The study was targeted at right-handedness, in order to reduce variations in cognitive ability due to the differences between right- and left-handed individuals [