Makoto Miyakoshi1, Annabel Shen-Hsing Chen2,
Kayako Matsuo3, Toshiharu Nakai
To
study the aging effect on neural mechanism of visual repetition, we performed
an fMRI study. Participants saw inside and outside scenes repeatedly for five
blocks, and the first two blocks (eight repetitions for each scene) were
compared with the last two blocks for Young and Elderly groups. The results
showed that the Elderly group has longer time-constant for the visual
repetition effect to take place within fusiform areas and the occipital
cortex. The results supported the conclusion that the aging effect on visual
repetition is represented by the compromised slew rate i.e., temporal
responsivity in the fusiform gyri.