Structural asymmetry of anterior insula: behavioral correlates and individual differences.

Structural asymmetry of anterior insula: behavioral correlates and individual differences.
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DOI:
10.1016/j.bandl.2013.03.005
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发表时间:
2013-08
期刊:
影响因子:
2.5
通讯作者:
Leonard, Christiana M.
Leonard, Christiana M.
中科院分区:
心理学3区
文献类型:
--
作者:
Chiarello, Christine;Vazquez, David;Felton, Adam;Leonard, Christiana M.

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目前的研究在一个大样本的年轻人(N=200)中调查了脑岛结构不对称和传统波斯语区域的行为相关性。结果表明:(1)脑岛前部左侧表面积的不对称性是可靠的;(2)这种不对称性与视觉词识别的视野偏侧化有关;(3)手部偏好的一致性调节了结构和语言不对称性的相关性。虽然脑岛前部、脑盖部、三角肌和颞平面的皮质表面积向左不对称,但只有脑岛前部的不对称与单词识别偏侧有关。我们在最近关于人类脑岛的结构和功能发现的背景下解释这些发现。我们认为,即使脑岛只是成人语言网络的一个小组成部分,早期发育的脑岛皮层的向左结构侧化可能会引导不对称的功能侧化。
The current study investigated behavioral correlates of structural asymmetry of the insula, and traditional perisylvian language regions, in a large sample of young adults (N=200). The findings indicated 1) reliable leftward surface area asymmetry of the anterior insula, 2) association of this asymmetry with divided visual field lateralization of visual word recognition, and 3) modulation of the correlation of structural and linguistic asymmetry by consistency of hand preference. Although leftward asymmetry of cortical surface area was observed for the anterior insula, pars opercularis and triangularis, and planum temporale, only the anterior insula asymmetry was associated with lateralized word recognition. We interpret these findings within the context of recent structural and functional findings about the human insula. We suggest that leftward structural lateralization of earlier developing insular cortex may bootstrap asymmetrical functional lateralization even if the insula is only a minor component of the adult language network.
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