神经心理学:早期失明患者的音调歧视
Frédéric Gougoux1, Franco Lepore, Maryse Lassonde
1Centre de Recherche en Neuropsychologie et Cognition, Département de Psychologie, Université de Montréal, CP 6128, Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada.
Nature
|July 16, 2004
概括
与视力正常的人相比,患有早期失明的盲人表现出更强的音调变化检测能力. 这种听觉优势,特别是在辨别声音方向方面,与失明发作的年龄相关,这表明大脑有显著的可塑性.
科学领域:
- 神经科学是一个神经科学.
- 听觉感知是一种听觉感知.
- 感官补偿是一种感官补偿.
背景情况:
- 据悉,失明的个体具有卓越的基于声音的定向技能.
- 目前尚不清楚这种听觉优势是否延伸到其他领域,如音乐或语音感知.
研究的目的:
- 调查失明是否导致听觉感知增强,特别是判断音调变化.
- 探索失明发病年龄与听觉表现之间的关系.
主要方法:
- 盲人和有视力的人之间的音调变化方向判断的比较.
- 测试性能跨不同速度的音调变化.
- 失明发病年龄与听觉任务的表现之间的相关性分析.
主要成果:
- 与视力控制对象相比,盲人对判断音调变化的方向表现出更好的能力.
- 这种增强的能力甚至在速度比控制器感知速度快十倍的速度下也被观察到.
- 在从小就失明的个体中,表现明显更好.
结论:
- 早期出现的失明与增强的听觉音调感知有关.
- 在早期发育期间的大脑可塑性可能是这种听觉补偿的基础.
- 研究结果支持大脑在应对感官损失时的适应能力.
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