尾部下部和中部前部旋转的刺激会在口语交互期间破坏计划
Gregg A Castellucci1, Christopher K Kovach2, Farhad Tabasi2
1NYU Neuroscience Institute and Department of Otolaryngology, New York University Langone Medical Center, New York, NY 10016, USA; Center for Neural Science, New York University, New York, NY 10003, USA.
Current biology : CB
|June 1, 2024
概括
这项研究表明,尾部下额头 (cIFG) 和中额头 (cMFG) 对于对话规划至关重要. 对这些区域的直接电刺激影响了响应的准确性和时间,突出了它们在交互式语言使用中的作用.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 语言学的语言学.
背景情况:
- 轮流是人类对话的基础,涉及复杂的感觉运动和认知过程.
- 之前的研究已经确定了轮流过程中的不同神经活动阶段:理解,准备和执行.
- 尾部下额头 (cIFG) 和中额头 (cMFG) 参与了语音规划动态.
研究的目的:
- 调查cIFG和cMFG在口语交互期间进行规划的必要性.
- 确定这些额头区域在使用直接电刺激的对话转换中的因果作用.
主要方法:
- 利用直接电刺激 (DES) 在神经外科患者志愿者中暂时扰乱皮质功能.
- 参与者执行了一个问答任务来模拟对话轮流.
- 分析了DES对响应准确度,发音精度和语音间时间的影响.
主要成果:
- 刺激cIFG和cMFG导致了响应错误,但不是表达性赤字.
- 运动控制区域的DES (例如,前中心) 导致关节缺陷.
- 对cIFG和cMFG的干扰大大延迟了对讲者之间的时间,这表明计划放缓了.
结论:
- cIFG和cMFG包含关键的准备回路,对于交互式语言使用至关重要.
- 这些发现支持cIFG和cMFG在对话轮流计划阶段的因果作用.
- 区分cIFG/cMFG的规划功能与其他皮层区域的运动执行功能.
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