Dataset Information

Avatar Embodiment. Towards a Standardized Questionnaire.

ABSTRACT: Inside virtual reality, users can embody avatars that are collocated from a first-person perspective. When doing so, participants have the feeling that the own body has been substituted by the self-avatar, and that the new body is the source of the sensations. Embodiment is complex as it includes not only body ownership over the avatar, but also agency, co-location, and external appearance. Despite the multiple variables that influence it, the illusion is quite robust, and it can be produced even if the self-avatar is of a different age, size, gender, or race from the participant's own body. Embodiment illusions are therefore the basis for many social VR experiences and a current active research area among the community. Researchers are interested both in the body manipulations that can be accepted, as well as studying how different self-avatars produce different attitudinal, social, perceptual, and behavioral effects. However, findings suggest that despite embodiment being strongly associated with the performance and reactions inside virtual reality, the extent to which the illusion is experienced varies between participants. In this paper, we review the questionnaires used in past experiments and propose a standardized embodiment questionnaire based on 25 questions that are prevalent in the literature. We encourage future virtual reality experiments that include first-person virtual avatars to administer this questionnaire in order to evaluate the degree of embodiment.

SUBMITTER: Gonzalez-Franco M

PROVIDER: S-EPMC7805666 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Avatar Embodiment. Towards a Standardized Questionnaire.

Gonzalez-Franco Mar M Peck Tabitha C TC

Frontiers in robotics and AI 20180622

Inside virtual reality, users can embody avatars that are collocated from a first-person perspective. When doing so, participants have the feeling that the own body has been substituted by the self-avatar, and that the new body is the source of the sensations. Embodiment is complex as it includes not only body ownership over the avatar, but also agency, co-location, and external appearance. Despite the multiple variables that influence it, the illusion is quite robust, and it can be produced eve ...[more]

PMID: 33500953

Similar Datasets

Project description:IntroductionThere has been an increased use of standardized measurements in health care meant to provide objective information to enhance the quality and effectivity of care. Patient performance tests are based on standardized predefined criteria with a limited focus. When facing multifaceted health conditions, information expanding the predefined criteria in a standardized test may be required to understand the patient's complex symptoms. Relying on test information based on measurements according to functional biology, one risks missing information communicated by the sensitive and expressive body of the individual patient. The aim of this article is to investigate how body, self and illness perception is constituted as a co-construction between a physiotherapist and a patient with complex symptoms, expanding the use of a standard physiotherapy test.MethodsThis qualitative study is based on video-recordings and in-depth interviews of seven women with the complex health condition chronic pelvic pain. The video recordings consist of the patients performing the Standard Mensendieck test pre- and post-treatment with Norwegian psychomotor physiotherapy. The interviews are based on the patients` and the physiotherapists` conversations while watching and elaborating on these video recordings. Empirical data is analyzed within the theoretical perspectives of phenomenology and enactive theory, especially focusing on the concepts of embodiment and intersubjectivity.ResultsTaking an embodied approach, considering the body as expressive, communicative, and vulnerable to the environment and context, the results show that through bodily expressions the patients experienced the test situation as demanding, thus providing information beyond what the test was intended to measure. Additionally, when administering a standardized test, the interaction between the therapist and the patient had an impact on the results. Sensitive attention towards the patients bodily expressive emotions as a vital part of the interaction, reinforced therapeutic alliance by ensuring the integrity and autonomy of the patient.DiscussionMutual communication, gave new insights regarding the patients' complex symptoms and reinforced their belief in themselves and their recovery processes. Applying the patient's expertise on herself and her life together with the professional expertise may make health care an interdependent practice where sensemaking is a co-construction of meaning between the patient and the health personnel.

Project description:BackgroundThe response to chemotherapy treatment of patients with pancreatic ductal adenocarcinoma (PDAC) is difficult to predict and the identification of patients who most likely will benefit from aggressive chemotherapy approaches is crucial. The concept of personalized medicine has emerged in the last years with the objective to tailor the medical treatment to the individual characteristics of each patient, and particularly to the tumor biology of each patient. The need for in-vivo xenotransplantation models for cancer patients has increased exponentially, and for this reason zebrafish avatars have gained popularity. Preliminary studies were conducted also with PDAC tissue.AimTo develop a simple, not expensive, diffusible zebrafish embryo model as avatar for patients affected by PDAC.MethodsTumor tissue was taken from the surgical specimen by the histopathologist. After its fragmentation into small pieces, they are stained with CM-Dil. Small pieces of stained tissue were transplanted into the yolk of wt AB zebrafish embryos with a glass capillary needle. Embryos were incubated at 35 °C in E3 medium supplemented with 1% Pen/Strep in the presence or absence of drugs for the following days in respect of the treatment plan (Gemcitabine; Gemcitabine and Oxaliplatin; Gemcitabine and nab-Paclitaxel; 5-Fluorouracil and Folinic acid and Oxaliplatin and Irinotecan). The response of zebrafish xenografts to the chemotherapy options has been analyzed by monitoring the fluorescent stained area at 2 h post injection (hpi), 1 d and 2 d post injection (dpi). In each time point, the mean size of the stained area was measured by ImageJ and it was normalized with respect to the 1 dpi time point mean relative tumor area (RTA). We evaluated the effect of the chemotherapy exposition comparing the mean RTA of each treated subgroup and the control group and evaluating the percentage reduction of the mean RTA by comparing each treated subgroup with the control group.ResultsBetween July 2018 and October 2019, a total of 15 patients with pancreatic cancer were prospectively enrolled. In all cases, it was possible to take a fragment of the tumor from the surgical specimen for the xenotransplantation in the zebrafish embryos. The histological examination confirmed the presence of a PDAC in all cases. In absence of chemotherapy (control group), over time the Dil-stained area showed a statistically significant increase in all cases. A statistically significant reduction of the mean RTA in the treated subgroups for at least one chemotherapy scheme was reported in 6/15 (40%) cases. The analysis of the percentage reduction of the RTA in treated subgroups in comparison to the control group revealed the presence of a linear relationship in each subgroup between the percentage reduction of the RTA and the number of cases reporting each percentage threshold considered for the analysis.ConclusionOur model seems to be effective for the xenotransplantation of PDAC tissue and evaluation of the effect of each chemotherapy scheme on the xenotransplanted tumor tissue.

Dataset Information

Avatar Embodiment. Towards a Standardized Questionnaire.

Publications

Avatar Embodiment. Towards a Standardized Questionnaire.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets