在熟练的聋人读者中,视觉文字形式系统中的双边单词选择性梯度
Laurie S Glezer1, Stephen McCullough1, Brennan Terhune-Cotter2
1San Diego State University Research Foundation, San Diego, CA, USA.
Neurobiology of language (Cambridge, Mass.)
|September 26, 2025
概括
聋人读者利用左脑和右脑半球进行视觉词识别,与听觉人士不同. 这种在视觉文字形式系统 (VWFS) 中的双边组织是一种独特的神经签名,用于在聋人成年人中成功阅读.
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:
- 听力个体的视觉词语识别依赖于左侧化腹腔皮 (vOT) 皮层层次结构.
- 右半球参与阅读通常与听力较差的人的阅读技能 (阅读障碍) 有关.
- 聋人阅读者的文字识别神经组织,特别是右侧vOT的作用,仍然在很大程度上是未知的.
研究的目的:
- 调查双边对聋人和听力阅读者的VOT中书面文字处理的等级组织.
- 为了确定聋和语音能力是否影响vOT.word选择性梯度的横向性.
- 为了比较在聋人与听力个体中成功阅读的神经签名.
主要方法:
- 功能磁共振成像 (fMRI) 用于研究大脑活动.
- 参与者包括技能匹配的聋人和听觉成年人.
- 刺激在拼写规律上有所不同:辅音字符串,伪词和真实词.
主要成果:
- 听力阅读者在左视觉文字形式系统 (VWFS) 中显示出排序结构,复制了之前的发现.
- 聋读者在左侧的VWFS中表现出类似的等级结构.
- 聋读者在右侧的VWFS中也表现出类似的等级结构,表明双边参与.
结论:
- 聋人读者中VWFS的双边层次组织是成功阅读的独特神经签名.
- 与阅读障碍的右半球不适应激活不同,这种双边激活对熟练的聋人读者来说并不有害.
- 在聋人成年人中成功阅读不需要典型的发育转向主要是左侧处理.
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