He Dongcheng, Nguyen Dat-Thanh, Ogmen Haluk, Nishina Shigeaki, Yazdanbakhsh Arash
Department of Electrical and Computer Engineering, Laboratory of Perceptual and Cognitive Dynamics, University of Denver, Denver, CO, United States.
Herbert Wertheim School of Optometry and Vision Science, University of California, Berkeley, Berkeley, CA, United States.
Front Psychol. 2023 Aug 17;14:1180561. doi: 10.3389/fpsyg.2023.1180561. eCollection 2023.
Our brain employs mechanisms to adapt to changing visual conditions. In addition to natural changes in our physiology and those in the environment, our brain is also capable of adapting to "unnatural" changes, such as inverted visual-inputs generated by inverting prisms. In this study, we examined the brain's capability to adapt to hyperspaces. We generated four spatial-dimensional stimuli in virtual reality and tested the ability to distinguish between rigid and non-rigid motion. We found that observers are able to differentiate rigid and non-rigid motion of hypercubes (4D) with a performance comparable to that obtained using cubes (3D). Moreover, observers' performance improved when they were provided with more immersive 3D experience but remained robust against increasing shape variations. At this juncture, we characterize our findings as "3 1/2 D perception" since, while we show the ability to extract and use 4D information, we do not have yet evidence of a complete phenomenal 4D experience.
我们的大脑运用多种机制来适应不断变化的视觉条件。除了我们生理上的自然变化以及环境中的变化外，我们的大脑还能够适应“非自然”变化，例如由倒置棱镜产生的倒置视觉输入。在本研究中，我们考察了大脑适应超空间的能力。我们在虚拟现实中生成了四维空间刺激，并测试了区分刚体运动和非刚体运动的能力。我们发现，观察者能够区分超立方体（四维）的刚体运动和非刚体运动，其表现与使用立方体（三维）时相当。此外，当观察者获得更具沉浸感的三维体验时，他们的表现会有所提高，但面对形状变化增加时仍保持稳健。在这个节点上，我们将我们的发现描述为“3.5维感知”，因为虽然我们展示了提取和使用四维信息的能力，但我们尚未有证据证明存在完整的现象学四维体验。
