Effects of aging on visuospatial performance and cerebral activation and lateralization: an FMRI study.
This study examines the differences between visuospatial performance of subjects in their 20s and 40s, including the number of activated voxels and cerebral lateralization using functional magnetic resonance imaging during visuospatial tasks. Eight college students in their 20s (21.5 +/- 2.3 years old) and six adults in their 40s (45.7 +/- 2.6 years old) participated in the experiment. Functional brain images were taken from 3T magnetic resonance imaging using the single-shot echo planar imaging method. Compared to subjects in their 20s, those in their 40s showed lower visuospatial performance, longer reaction time, and a smaller number of activated voxels. There was no difference in cerebral lateralization between the two age groups.
Kim
Hyun-Jun
HJ
Department of Obstetrics & Gynecology, Konkuk University, Chungju, Chungbuk, South Korea.
Park
Hyun-Kyung
HK
Park
Jong-Rack
JR
Choi
Mi-Hyun
MH
Lee
Hang-Woon
HW
Chung
Soon-Cheol
SC
D000328:Adult; D000375:Aging / Q000502:physiology*; D002540:Cerebral Cortex / Q000502:physiology*; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology*