刺激驱动和行为驱动的活动沿着皮质听力层次结构.
Kirill V Nourski1, Mitchell Steinschneider2, Ariane E Rhone3
1Department of Neurosurgery, The University of Iowa, Iowa City, IA 52242, USA; Iowa Neuroscience Institute, The University of Iowa, Iowa City, IA 52242, USA.
NeuroImage
|February 13, 2026
概括
这项研究使用内脑电图 (iEEG) 来绘制语音感知过程中的大脑活动. 与行为相关的神经活动主要在前额叶皮质中发现,与刺激驱动的听觉处理不同.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 语音处理 语音处理
背景情况:
- 听觉皮层处理声学和语音语言特征.
- 更高层次的处理涉及腹部/背部流和前额叶皮质的感知和行动.
研究的目的:
- 为了澄清皮质位置和神经活动的出现,驱动语音感知中的行为事件.
- 为了区分刺激驱动的神经模式和行为驱动的神经模式.
主要方法:
- 在患者的内电脑图 (iEEG).
- 单音节单词的呈现和按按下任务用于语义目标.
- 分析高马活动的时间锁定到刺激开始和运动反应.
主要成果:
- 与刺激相关的活动在听觉层次结构和感觉运动皮层中普遍存在.
- 与行为相关的活动集中在前额叶皮层,一些活动集中在前部和腰部区域.
- 观测到半球不对称性:右感官运动与刺激相关的活动,左前额活动与行为相关的活动.
结论:
- 神经活动驱动语音感知行为的代表很少,主要是在前额叶皮层.
- 更快的反应与听觉,前额头和前运动区域的刺激锁定活动增加有关.
- 研究结果揭示了感官处理的皮质组织和语音感知中的行为定时神经事件.
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