Binder J R, Frost J A, Hammeke T A, Rao S M, Cox R W
Department of Neurology, Medical College of Wisconsin, Milwaukee 53226, USA.
Brain. 1996 Aug;119 ( Pt 4):1239-47. doi: 10.1093/brain/119.4.1239.
Previous research suggests that the human left planum temporale (PT) plays an important role in language. To test this hypothesis, functional MRI (fMRI) data were collected from 12 normal right-handed subjects during passive and active listening to words and tone sequences. Several left hemisphere areas, including the superior temporal sulcus, middle temporal gyrus, angular gyrus and lateral frontal lobe showed stronger activation during the word conditions. This was not true of the PT, which responded equally to tones and words during passive listening and more strongly to tones during active listening. The PT is likely to be involved in early auditory processing, while specifically linguistic functions are mediated by multimodal association areas distributed elsewhere in the left hemisphere.
先前的研究表明，人类左侧颞平面（PT）在语言中起着重要作用。为了验证这一假设，在12名正常右利手受试者被动和主动听单词及音调序列时收集了功能磁共振成像（fMRI）数据。包括颞上沟、颞中回、角回和额叶外侧在内的几个左半球区域在听单词时显示出更强的激活。但PT并非如此，它在被动听时对音调和单词的反应相同，而在主动听时对音调的反应更强。PT可能参与早期听觉处理，而特定的语言功能则由分布在左半球其他部位的多模态联合区介导。
