在虚拟现实中编码围绕个人和超个人空间:来自fMRI研究的见解
Meret Mertens1, Ferdinand Binkofski2, Bruno Leitão3
1Division of Clinical Cognitive Sciences, Department of Neurology, University Hospital RWTH Aachen, Pauwelsstraße 17, Aachen 52074, Germany.
NeuroImage
|June 15, 2025
概括
立体视觉增强脑活动在背部视觉流对象在周围空间的物体. 这表明大脑以不同的方式处理可触及的对象,重点是行动和相互作用.
科学领域:
- 神经科学是一个神经科学.
- 视觉感知 视觉感知 视觉感知
- 认知心理学 认知心理学
背景情况:
- 大脑通过使用不同的神经网络来处理周边空间 (可触及) 和超个人空间 (不可触及) 中的对象.
- 围绕个人空间的处理与背部视觉通路中的负担相关,与非个人空间不同.
- 对象特征 (大小,可感知性,立体可视性) 对虚拟环境中的空间处理的影响仍然不清楚.
研究的目的:
- 研究物体特征,特别是立体呈现和距离,如何影响神经处理对象在周围与外在空间.
- 澄清背部和腹部视觉流在基于其空间位置和交互潜力的处理对象中的作用.
主要方法:
- 44名健康参与者进行视觉歧视任务的fMRI扫描.
- 用MRI兼容的防护眼镜,在周围和超个人空间中呈现物体.
- 刺激在明显的距离,大小,方向和呈现 (单镜与立体镜) 中有所不同,像素大小受控制以验证距离效应.
主要成果:
- 立体呈现显著增强的背部流激活 (V5 / MT,侧皮质,后部内),表明增加的周围空间处理.
- 周围人体空间刺激引发了双边的背部视觉流激活 (侧面的头后皮层到后部的内侧皮层).
- 超个人空间刺激主要激活了三级视觉皮层的腹部区域.
结论:
- 周围人体空间中的刺激会吸引背部视觉流,支持以行动为导向的编码和掌握负担.
- 超个人空间中的刺激会吸引腹部区域,主要用于语义处理和场景分析.
- 这些独特的神经模式即使在控制像素对象大小时也会持续存在,突出显示空间处理中的基本差异.
相关概念视频
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