Wohlert A B, Hammen V L
Purdue University, West Lafayette, IN, USA.
J Speech Lang Hear Res. 2000 Oct;43(5):1229-39. doi: 10.1044/jslhr.4305.1229.
Changes in suprasegmental speech parameters may require adjustments in oral motor control that are reflected in the activity of perioral musculature. In order to evaluate possible patterns of difference, perioral surface electromyographic (EMG) signals were obtained from 20 adults who read a paragraph aloud at habitual rate and at self-judged proportionately slower and faster rates, at habitual loudness and at proportionately softer and louder levels, and in a "precise" manner. EMG amplitude analysis showed significant task effects, with higher average amplitudes for fast, loud, and precise speech and lower average amplitudes for slow and soft speech. These results are compatible with a model of multidimensional reorganization of speech motor control for suprasegmental changes applied to connected speech.
超音段言语参数的变化可能需要对口部运动控制进行调整，这在口周肌肉组织的活动中有所体现。为了评估可能的差异模式，从20名成年人身上获取了口周表面肌电图（EMG）信号，这些成年人以习惯语速、自认为成比例的较慢和较快语速，以习惯响度、成比例的较柔和和较响亮水平，以及以“精确”方式大声朗读一段文字。肌电图幅度分析显示出显著的任务效应，快速、大声和精确言语的平均幅度较高，而缓慢和柔和言语的平均幅度较低。这些结果与适用于连贯言语的超音段变化的言语运动控制多维重组模型相一致。
