Cerebral asymmetries for language: Evidence for structural-behavioral correlations
Cerebral asymmetries for language: Evidence for structural-behavioral correlations
复制标题
DOI：
10.1037/0894-4105.18.2.219
复制
发表时间：
2004-04-01
期刊：
影响因子：
2.4
通讯作者：
Leonard, C
中科院分区：
文献类型：
--
作者：
Chiarello, C;Kacinik, N;Leonard, C
本研究对20名右利手男性受试者进行了5项视野任务的测试。使用结构磁共振成像测量Heschl回、颞平面和顶平面的不对称性。复合任务的不对称性呈正相关，只有颞平面的不对称性。解剖学和行为不对称的一致性之间也存在关联：那些在不同区域之间偏离皮层不对称模式最多的人，在不同任务之间也往往表现出最大的不对称性变异。因此，语言侧化任务的个体差异可能会受到后语言结构不对称性变化的影响。此外，当典型的解剖学不对称未能共同发生时，可能存在跨半球的功能分布的不太严格的调节。
The Current investigation tested 20 male right-handers in 5 divided visual field lexical tasks. Asymmetries in Heschl's gyrus, planum temporale, and planum parietale were measured using Structural magnetic resonance imaging. Composite task asymmetries were positively correlated with asymmetry of the planum temporale only. There was also an association between the consistency of anatomical and behavioral asymmetries: Individuals who departed the most from the modal pattern of cortical asymmetry across regions also tended to show the greatest variability in asymmetry across tasks. Hence, individual differences in language laterality tasks may be affected by variation in asymmetry of posterior language structures. Additionally, when typical anatomical asymmetries fail to co-occur, there may be a less strictly regulated distribution of function across hemispheres.