Fujimaki Norio, Hayakawa Tomoe, Matani Ayumu, Okabe Yoichi
Brain Information Group, National Institute of Information and Communications Technology, 588-2 Iwaoka, Iwaoka-cho, Nishi-ku, Kobe 651-2492, Japan.
Neuroreport. 2004 Oct 25;15(15):2341-5. doi: 10.1097/00001756-200410250-00008.
Neural activity during inner speech of meaningless syllable sequences was measured with MEG and fMRI from eight right-handed subjects who executed a delayed-response task. An fMRI-constrained MEG multi-dipole analysis showed that active neural sources were detected at latencies of about 200-300 ms after cues near the posterior superior temporal sulcus and were more numerous in the right hemisphere than in the left hemisphere. Since the subjects were cued to repeat inner speech of meaningless sequences stored in verbal working memory, the activity in the right (language-nondominant) hemisphere suggested that the task required processing of more prosodic features such as pitch and rhythm than phonemic features.
通过MEG和fMRI对8名右利手受试者进行无意义音节序列内心言语期间的神经活动测量，这些受试者执行了延迟反应任务。一项受fMRI约束的MEG多偶极分析表明，在提示后约200 - 300毫秒时，在颞上沟后部附近检测到活跃的神经源，且右半球比左半球更多。由于受试者被提示重复存储在言语工作记忆中的无意义序列的内心言语，右（非语言优势）半球的活动表明，该任务需要处理比音素特征更多的韵律特征，如音高和节奏。
