视觉词识别中的半球相互作用的时间动态使用重复启动范式:通过刺激开始异步调制
1Department of Psychology, Chonnam National University, Gwangju, Republic of Korea.
Frontiers in psychology
|August 18, 2025
概括
词汇呈现的时间显著影响左脑和右脑半球如何处理语言. 较快的时间 (100毫秒) 更多地参与了右半球,而较慢的时间 (200毫秒) 则有利于左半球进行视觉文字识别.
科学领域:
- 认知神经科学 认知神经科学
- 心理语言学 心理语言学
- 神经科学是一个神经科学.
背景情况:
- 了解半球相互作用是语言处理动态的关键.
- 在视觉词识别过程中,刺激发作异步 (SOA) 在半球间通信中的作用尚未完全阐明.
- 研究时机如何影响左半球和右半球对词汇处理的贡献至关重要.
研究的目的:
- 为了检查刺激发作异步 (SOA) 对半球间相互作用的影响,在一个原始侧面化词汇决策任务.
- 确定主要和目标词介绍之间的时间间隔如何影响左半球和右半球的参与.
- 评估词汇熟悉度在不同SOA中模块化半球贡献中的作用.
主要方法:
- 参与者完成了一个词汇决策任务,用横向的主要目标单词对来完成.
- 在左视野 (LVF) 或右视野 (RVF) 中呈现的刺激跨越了三个SOA:0ms,100ms和200ms.
- 基于对视野配对和SOA的性能分析了半球间相互作用,使用单词熟悉度作为词汇能力的衡量标准.
主要成果:
- 在100ms SOA时,LVF素数和RVF目标表明右半球在启动半球间处理时具有视觉感知主导地位.
- 在200ms SOA,RVF素数和LVF目标表明左半球对半球间效应的词语语义影响更强.
- 性能模式在不同的SOA和视觉场展示中差异很大.
结论:
- 时间动态极大地影响半球对视觉词识别的贡献.
- 半球间集成是时间敏感的,半球间的影响因刺激时间而异.
- 词汇处理取决于视野呈现和大脑半球的精确时间参与.
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