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光学面膜控制着猫头的听觉空间地图中的视觉引导的适应性可塑性
1Department of Neurobiology, Stanford University School of Medicine, Stanford, California 94305, USA.
Nature
|January 10, 2002
概括
视觉体验塑造了大脑的听觉地图. 猫头的视觉直肠损伤破坏了听觉地图的调整,显示直肠局部指定了听觉可塑性.
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.
- 感官整合 感官整合
背景情况:
- 中脑的听觉地图是可适应的,受视觉输入的影响.
- 穿着镜的楼猫在下侧结核 (ICX) 内的听觉空间地图中显示了变化.
- 假设光学纹体的拓视觉活动指导听觉地图校准.
研究的目的:
- 为了研究光学纹体在校准听觉空间图中的作用.
- 确定视觉体验是否以特定位置的方式指导听觉地图可塑性.
主要方法:
- 创建了一个受限制的,单边的病变在前视觉表现区域的光学直肠在谷仓猫头.
- 观察了受伤后在下 (ICX) 的外部核中听觉空间图的适应性调整.
- 在受损与对照猫头中比较听觉图形塑性.
主要成果:
- 视觉直体的损伤消除了适应性听觉地图的调整,专门用于额头空间表示.
- 听力地图区域与受损的视觉膜区域不相应,继续正常适应.
- 这表明光学构造提供了特定位置的指令信号,用于听觉地图校准.
结论:
- 光学面膜以空间精确的方式作为听觉空间图的关键校准器.
- 光学纹体的地形信号直接影响ICX内的适应性听觉可塑性.
- 这突出了视觉体验如何塑造听觉空间表现的机制.
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