Barbieri Filippo, Buonocore Antimo, Volta Riccardo Dalla, Gentilucci Maurizio
Dipartimento di Neuroscienze, Università di Parma, Parma 43100, Italy.
Brain Lang. 2009 Jul;110(1):1-11. doi: 10.1016/j.bandl.2009.01.002. Epub 2009 Feb 23.
Previous repetitive Transcranial Magnetic Stimulation and neuroimaging studies showed that Broca's area is involved in the interaction between gestures and words. However, in these studies the nature of this interaction was not fully investigated; consequently, we addressed this issue in three behavioral experiments. When compared to the expression of one signal at a time, arm kinematics slowed down and voice parameters were amplified when congruent words plus gestures were simultaneously produced (experiment 1). When word and gesture were incongruent, arm kinematics did not change regardless of word category, whereas the gesture induced variation in vocal parameters of communicative and action words only (experiments 2 and 3). Data are discussed according to the hypothesis that integration between gesture and word occurs by transferring the social intention to interact directly with the interlocutor from the gesture to the word.
以往的重复性经颅磁刺激和神经影像学研究表明，布洛卡区参与了手势与言语之间的相互作用。然而，在这些研究中，这种相互作用的本质并未得到充分研究；因此，我们通过三项行为实验来解决这个问题。与一次表达一种信号相比，当同时产生一致的词语和手势时，手臂运动学减慢，语音参数增强（实验1）。当词语和手势不一致时，无论词语类别如何，手臂运动学都没有变化，而手势仅引起交际性词语和动作性词语的语音参数变化（实验2和3）。根据手势与词语之间的整合是通过将与对话者直接互动的社会意图从手势转移到词语这一假设来讨论数据。
