Brain Network Based on Different Levels of Performance in Verbal and Visuospatial Tasks: An fMRI Study
The purpose of stuffy was to identify brain areas that become activated while subjects performing verbal tasks (VT) and visuospatial tasks (VST) with different performance levels. 327 college students were evaluated for VT and VST, then 17 females were selected for fMRI study. 8 of 17 subjects displayed higher levels of performance in VT but with lower levels of performance in VST. Rest of them showed better VST performance but poor VT performance. Subjects were right-handed with no history of brain injury. The fMRI paradigm was designed to have 8 blocks of each task and each block has 3 items. Imaging was performed on a 1.5T Siemens Vision Scanner. Single-shot EPI fMRI scans (TR/TE 3S40/40ms, flip angle 90, FOV 220, 64x64 matrix) were acquired. Imaging data were motion-corrected, coregistered, normalized, and then analyzed using SPM-99. Group subtraction analysis revealed that subjects with better performance in VT showed more activation in the bilateral cingulate gyri and the left superior parietal lobe, whereas subjects with poor performance in VT displayed more activation in both frontal lobes. There was greater activation in the bilateral cingulate gyri and the right superior parietal lobe for better VST performance group, whereas the right thalamus and left temporooccipital area for poor VST performance group. The fMRI revealed that the bilateral cingulate gyri were activated in either better VT or VST performance group.
Jin-Hun Sohn Kyung-Hwa Lee Se-Hoon Park Yun-Hee Kim
Dept. of Psychology, Brain Research Institute, Chungnam University, Taejon, 305-764,Korea Dept. of Rehabilitation Medicine, Research Institute of Clinical Medicine, Chonbuk University Colleg
国际会议
8th International Conference on Neural Information Processing(ICONIP 2001)(第八届国际神经信息处理大会)
上海
英文
474-477
2001-11-14（万方平台首次上网日期，不代表论文的发表时间）