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Details

  • Name

    Maximino Bessa
  • Cluster

    Computer Science
  • Role

    Senior Researcher
  • Since

    01st March 2009
008
Publications

2020

Virtual reality in training: an experimental study with firefighters

Authors
Narciso, D; Melo, M; Raposo, JV; Cunha, J; Bessa, M;

Publication
Multimedia Tools and Applications

Abstract
Training with Virtual Reality (VR) can bring several benefits, such as the reduction of costs and risks. We present an experimental study that aims to evaluate the effectiveness of a Virtual Environment (VE) to train firefighters using an innovative approach based on a Real Environment (RE) exercise. To measure the VE’s effectiveness we used a Presence Questionnaire (PQ) and participant’s cybersickness, stress and fatigue. Results from the PQ showed that participants rated the VE with high spatial presence and moderate realness and immersion. Signs of stress, analyzed from participant’s Heart-Rate Variability, were shown in the RE but not in the VE. In the remaining variables, there was only an indicative difference for fatigue in the RE. Therefore, the results suggest that although our training VE was successful in giving participants spatial presence and in not causing cybersickness, its realness and immersion provided were not enough to provoke a similar RE response. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.

2020

A Comparative Study Between Wired and Wireless Virtual Reality Setups

Authors
Goncalves, G; Monteiro, P; Melo, M; Vasconcelos Raposo, J; Bessa, M;

Publication
IEEE Access

Abstract

2020

The impact of olfactory and wind stimuli on 360 videos using head-mounted displays

Authors
Narciso, D; Melo, M; Raposo, JV; Bessa, M;

Publication
ACM Transactions on Applied Perception

Abstract
Consuming 360 audiovisual content using a Head-Mounted Display (HMD) has become a standard feature for Immersive Virtual Reality (IVR). However, most applications rely only on visual and auditory feedback whereas other senses are often disregarded. The main goal of this work was to study the effect of tactile and olfactory stimuli on participants' sense of presence and cybersickness while watching a 360 video using an HMD-based IVR setup. An experiment with 48 participants and three experimental conditions (360 video, 360 video with olfactory stimulus, and 360 video with tactile stimulus) was performed. Presence and cybersickness were reported via post-test questionnaires. Statistical analysis showed a significant difference in presence between the control and the olfactory conditions. From the control to the tactile condition, mean values were higher but failed to show statistical significance. Thus, results suggest that adding an olfactory stimulus increases presence significantly while the addition of a tactile stimulus only shows a positive effect. Regarding cybersickness, no significant differences were found across conditions. We conclude that an olfactory stimulus contributes to higher presence and that a tactile stimulus, delivered in the form of cutaneous perception of wind, has no influence in presence. We further conclude that multisensory cues do not affect cybersickness.

2020

Assessing presence in virtual environments: adaptation of the psychometric properties of the Presence Questionnaire to the Portuguese populations

Authors
Vasconcelos Raposo, J; Melo, M; Barbosa, L; Teixeira, C; Cabral, L; Bessa, M;

Publication
Behaviour & Information Technology

Abstract

2020

Usability and Sense of Presence in Virtual Worlds for Distance Education: A Case Study with Virtual Reality Experts

Authors
Krassmann, AL; Rocha Mazzuco, AEd; Melo, M; Bessa, M; Bercht, M;

Publication
Proceedings of the 12th International Conference on Computer Supported Education

Abstract

Supervised
thesis

2019

Multisensory experiences adding environmental factors to Virtual Environments

Author
David  Gonçalves Narciso

Institution
UTAD

2019

Avatares para interação de elevada fidelidade em ambientes virtuais imersivos

Author
Fábio Manuel Baio Correia

Institution
UTAD

2019

Realidade aumentada multyissensorial aplicada num contexto de herança cultural

Author
Anabela Gonçalves Rodrigues Marto

Institution
UTAD

2018

Ambientes virtuais multissensoriais: equivalência entre treino virtual e real

Author
David  Gonçalves Narciso

Institution
UTAD

2018

Utilização de tecnologias de ra e rv para entrega de conteúdos imersivos baseados na localização

Author
João Nuno Sampaio de Carvalho

Institution
UTAD