记忆调节感知处理以表示的下皮质中的偏心空间
1School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China.
Progress in neurobiology
|October 4, 2024
概括
这项研究表明,后下皮质神经元代表特定背景中的对象位置,将场景记忆与当前感知集成在一起. 这为记忆效应如何塑造视觉处理和偏心空间表示提供了神经元证据.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 视觉感知 视觉感知 视觉感知
背景情况:
- 了解非中心空间表示对于编码更大的场景中的对象位置至关重要.
- 虽然场景表示 (例如,认知地图) 被研究,但其对感知处理的影响不太了解.
研究的目的:
- 调查场景背景如何影响对象位置的感知处理.
- 检查与空间和对象信息相关的后下皮质 (PIT) 中的神经系统机制.
主要方法:
- 在子 (Macaca mulatta) 身上使用了视觉指导的萨卡德任务.
- 在对象刺激之前,从大型马赛克图片 (家长图片) 移动的背景被呈现出来.
- 从PIT皮质的377个神经元中记录了单个单元的活动.
主要成果:
- 在PIT皮层中的神经元显示了与空间相关的 (119/377) 和与对象相关的 (125/377) 信息.
- 与空间相关的神经元共同编码了凝视位置和背景图像,而不是独立地.
- 响应是由背景图像在父母图片中的框架位置调节的,这取决于父母图片本身.
结论:
- 皮特神经元在特定的背景背景中代表特定的物体位置.
- 研究结果表明,对感知有一种记忆效应,即先前的视觉体验会影响当前的空间表现.
- 这提供了神经元的证据,用于在立即视野之外的场景中表示偏心物体位置.
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