VR Systems for Body Image and Body Schema

用于身体图像和身体模式的 VR 系统

• 批准号: RGPIN-2018-06814
• 负责人: Gromala, Diane
• 金额: $ 4.08万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=757652
• 关键词: VR; Systems; Body; Image; Schema

Recent research in the emerging field of embodied cognition demonstrates the mutual importance ofunderstanding the extent to which technologies affect our physical/physiological factors, and how ourassumptions about our bodies affect the ways we design technology. Thus, it is increasingly important to studythe fundamental processes of body schemas and body images. A body schema comprises the collection ofprocesses that are responsible for typically non-conscious processes such as posture and movement. A bodyimage refers to attitudes and beliefs we have about our body, which change over time, or when we facedisability or disease. Body schema and body image function as continuous, mutually influential processes thatprovide important information about a user's psychophysiological state.The focus of proposed body image/body schema research will be on immersive VR. Research in body ownership of VR avatars has led to important findings regarding visual, motor and tactile phenomena, as well as the role of time in how VR users gain a sense of “ownership” of their VR avatars. In essence, this tells us important information about body schema, but far less about body image. Moreover, while this research includes the adoption or ownership of non-human body parts, such as tails, it nevertheless assumes a healthy, normative body. However, certain conditions such as chronic and phantom pain are known to profoundly disturb body image and body schema. Moreover, while VR has been shown to be a form of pain alleviation, the mechanism that may explain this effect is still in its infancy, as are varied outcomes about how long this effect may persist after VR exposure. These are some examples of why it is important to gain a better understanding of how users gain an embodied sense of a VR avatar from a first person perspective - a perspective that includes body image.This proposal aims to contribute to increasingly important research on fundamental human processes of body schema and body image. We propose to: (i) investigate computation of body schema and body image by abstracting and modeling relevant correlates of each, (ii) identify relationships of body schema and image that together indicate variable psychophysiological user states, (iii) develop visualizations that correlate to changing user states, initially in VR avatars for range-of-movement studies in seniors, (iv) develop an interface that enables user annotations of body image data, (v) develop methods for accurate repeatability of capturing user state data, (vi) visualize aggregation of variable time frames for later analysis of longitudinal data of users. The long-term objective of this research is two-fold: 1. To identify the theoretical underpinnings and formalisms necessary to devise computational models of variable body schema and image data. 2. To develop methods of assessment to provide empirical evidence of effectiveness.

最近在新兴的具身认知领域的研究表明，了解技术对我们的物理/生理因素的影响程度，以及我们对身体的假设如何影响我们设计技术的方式，两者之间具有共同的重要性。因此，研究身体图式和身体意象的基本过程就变得越来越重要。身体图式包括负责典型的无意识过程的过程的集合，如姿势和运动。身体形象是指我们对自己的身体的态度和信念，随着时间的推移，或者当我们面临残疾或疾病时，这些态度和信念会发生变化。身体图式和身体意象是相互影响的连续过程，为使用者提供有关心理生理状态的重要信息。身体意象/身体图式研究的重点将是沉浸式VR。对虚拟现实虚拟化身的身体所有权的研究导致了关于视觉、运动和触觉现象的重要发现，以及时间在虚拟现实用户如何获得对虚拟现实虚拟化身的“所有权”感中所起的作用。从本质上讲，这告诉了我们关于身体图式的重要信息，但关于身体形象的信息要少得多。此外，虽然这项研究包括采用或拥有非人类身体部位，如尾巴，但它仍然假设一个健康、规范的身体。然而，某些情况，如慢性和幻觉疼痛，已知会严重干扰身体形象和身体图式。此外，虽然VR已被证明是一种缓解疼痛的形式，但可能解释这种效应的机制仍处于初级阶段，关于这种效应在VR暴露后可能持续多长时间的结果也各不相同。这些例子说明了为什么从第一人称的角度更好地理解用户如何获得虚拟现实化身的体验感是很重要的。这一提议旨在为越来越重要的人体基本过程的身体图式和身体形象的研究做出贡献。我们建议：(I)通过抽象和建模身体图式和身体图像的相关关系来研究身体图式和身体图像的计算；(Ii)识别身体图式和身体图像的关系，这些关系共同指示不同的心理生理用户状态；(Iii)开发与用户状态变化相关的可视化，最初在VR化身中用于老年人的运动范围研究；(Iv)开发使用户能够对身体图像数据进行注释的界面；(V)开发准确的可重复性捕获用户状态数据的方法；(Vi)可视化聚合可变时间帧以用于以后分析用户的纵向数据。这项研究的长期目标有两个：1.确定设计变体图式和图像数据的计算模型所需的理论基础和形式。2.制定评估方法，以提供有效性的经验证据。