在词汇决策中检查半球间处理和任务需求:从横向视觉场范式的洞察力.
1Wisdom Science Center, Korea University, Seoul, South Korea.
Frontiers in psychology
|July 3, 2023
概括
任务需求会影响大脑在词汇决策过程中的处理. 增加的需求,特别是伪词的需求,激活左半球,建议用于词识别的战略处理.
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:
- 词汇决策 (LDT) 涉及到确定一个刺激是单词还是非单词.
- 半球在语言处理方面的专业化已经很成熟,左半球通常占主导地位.
- 在LDT过程中,任务需求在调节单半球与双半球处理中的作用需要进一步研究.
研究的目的:
- 调查任务需求如何影响单半球与双半球在词汇决策过程中的处理.
- 为了确定正写法的合法性是否在左半球在增加的任务需求下被战略性地使用.
- 为了检查半球处理策略在对面和面LDTs.
主要方法:
- 使用视觉半场范式 (实验1) 和形呈现 (实验2).
- 用伪词和非词来操纵任务需求,使用准和的词汇决策任务 (LDT).
- 分析了响应偏差以推断单半球和双半球处理策略.
主要成果:
- 实验1揭示了与非单词LDT相比,伪单词LDT在右视野/左半球 (RVF/LH) 中对"word"的响应偏差,这表明在LH中战略性使用拼写合法性.
- 实验2显示了类似的对"词"的响应偏差在foveal伪词LDT与foveal非词LDT之间,这表明LH招募.
- 调查结果表明,在任务需求更高的情况下,向左主导的双半球处理转移.
结论:
- 任务需求显著影响在词汇决策过程中使用的半球策略.
- 左半球在增加任务需求的情况下,战略性地利用正写合法性信息,特别是伪词.
- 叶词汇决策处理似乎是左主导和双半球,特别是在处理具有挑战性的刺激时.
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