Max Planck Institute for Human Cognitive and Brain Sciences, Department of Neuropsychology, Leipzig, Germany.
Brain Lang. 2013 Nov;127(2):289-95. doi: 10.1016/j.bandl.2013.03.001. Epub 2013 May 1.
The dorsal and ventral information streams between inferior frontal and temporal language regions in the human brain are implemented by two fiber connections that consist of separable tracts. We compared the maturation of the two connections including their subcomponents in three different age groups: newborn infants, 7-year-old children, and adults. Our results reveal a maturational primacy of the ventral connection in the language network associating the temporal areas to the inferior frontal gyrus during early development, which is already in place at birth. Likewise, a dorsal pathway from the temporal cortex to the premotor cortex is observable at this early age. This is in contrast to the dorsal pathway to the inferior frontal gyrus which matures at later stages in development and might play a role in more complex language functions.
人类大脑中下额叶和颞叶语言区域之间的背侧和腹侧信息流是由两条纤维连接实现的，这两条纤维连接由可分离的束组成。我们比较了这两条连接及其子成分在三个不同年龄组中的成熟情况：新生儿、7 岁儿童和成年人。我们的研究结果揭示了在语言网络中，连接颞叶区域和下额叶的腹侧连接在早期发育中具有成熟的优先权，这种连接在出生时就已经存在。同样，在这个早期阶段，也可以观察到从颞叶到运动前皮质的背侧通路。与之形成对比的是，连接颞叶到下额叶的背侧通路在发育的后期成熟，并可能在更复杂的语言功能中发挥作用。
