Guia temàtica Biblioteca ETSAB: Innovacions tecnològiques a l’arquitectura, la construcció i l’urbanisme

Postprint (author’s final draft)

Guia temàtica Biblioteca ETSAB: Ignasi de Solà-Morales: itineraris intel·lectuals

Postprint (author’s final draft)

Guia temàtica Biblioteca ETSAB: Terratrèmols i arquitectura

Postprint (author’s final draft)

Brain-Computer Interfaces, Virtual Reality, and Videogames

Major challenges must be tackled for brain-computer interfaces to mature into an established communications medium for VR applications, which will range from basic neuroscience studies to developing optimal peripherals and mental gamepads and more efficient brain-signal processing techniques.

Brain Computer Interface for Virtual Reality Control

A brain-computer interface (BCI) is a new communication channel between the human brain and a computer. Applications of BCI systems comprise the restoration of movements, communication and environmental control. In this study experiments were made that used the BCI system to control or to navigate in virtual environments (VE) just by thoughts. BCI experiments for navigation in VR were conducted so far with synchronous BCI and asynchronous BCI systems. The synchronous BCI analyzes the EEG patterns in a predefined time window and has 2 to 3 degrees of freedom.

Cue-elicited anxiety and craving for food using virtual reality scenarios

Cue exposure therapy has been reported to be an effective intervention for reducing binge eating behavior in patients with eating disorders and obesity. However, in vivo food exposure conducted in the therapist's office presents logistical problems and lacks ecological validity. This study proposes the use of virtual reality technology as an alternative to in vivo exposure, and assesses the ability of different virtual environments to elicit anxiety and craving for food in a non-clinical sample. The results show that exposure to virtual environments provokes changes in reported craving for food. High-calorie food cues are the ones that elicit the highest increases in craving.

Differential effects of two virtual reality interventions: distraction versus pain control

There is evidence that virtual reality (VR) pain distraction is effective at improving pain-related outcomes. However, more research is needed to investigate VR environments with other pain-related goals. The main aim of this study was to compare the differential effects of two VR environments on a set of pain-related and cognitive variables during a cold pressor experiment. One of these environments aimed to distract attention away from pain (VRD), whereas the other was designed to enhance pain control (VRC). Participants were 77 psychology students, who were randomly assigned to one of the following three conditions during the cold pressor experiment: (a) VRD, (b) VRC, or (c) Non-VR (control condition). Data were collected regarding both pain-related variables (intensity, tolerance, threshold, time perception, and pain sensitivity range) and cognitive variables (self-efficacy and catastrophizing). Results showed that in comparison with the control condition, the VRC intervention significantly increased pain tolerance, the pain sensitivity range, and the degree of time underestimation. It also increased self-efficacy in tolerating pain and led to a reduction in reported helplessness. The VRD intervention significantly increased the pain threshold and pain tolerance in comparison with the control condition, but it did not affect any of the cognitive variables. Overall, the intervention designed to enhance control seems to have a greater effect on the cognitive variables assessed. Although these results need to be replicated in further studies, the findings suggest that the VRC intervention has considerable potential in terms of increasing self-efficacy and modifying the negative thoughts that commonly accompany pain problems.

Guia temàtica Biblioteca ETSAB: Homenatge a Manuel de Solà-Morales (1939-2012)

Postprint (author’s final draft)

Impacto de la interactividad de un entorno virtual, en el fomento del aprendizaje colaborativo en la Universidad Santiago de Cali

En este estudio se analiza el impacto de la interactividad de un entorno virtual, el fomento del aprendizaje colaborativo de un grupo conformado por diez y seis (N=16) estudiantes del segundo semestre del programa de Ingeniería Industrial de la universidad Santiago de Cali. Se planteó como objetivo, establecer un foro virtual con una actividad de aprendizaje colaborativo, basada en un problema a resolver como tarea conjunta.La experiencia se desarrolló mediante un diseño de tipo exploratorio y descriptivo, enfocado en recolectar y analizar información que permitió comprender y valorar el impacto de la interactividad en el aprendizaje colaborativo de los estudiantes. Con el estudio, se apertura un espacio de discusión en torno al impacto real de las interacciones en el fomento del aprendizaje, durante la realización de tareas colaborativas de los estudiantes, utilizando el foro virtual como herramienta de apoyo.

Clinical validation of a virtual environment for normalizing eating patterns in eating disorders

The purpose of the present study was to examine the clinical validation of a Virtual Reality Environment (VRE) designed to normalize eating patterns in Eating Disorders (ED). The efficacy of VR in eliciting emotions, sense of presence and reality of the VRE were explored in 22 ED patients and 37 healthy eating individuals. The VRE (non-immersive) consisted of a kitchen room where participants had to eat a virtual pizza. In order to assess the sense of presence and reality produced by the VRE, participants answered seven questions with a Likert scale (0-10) during the experience, and then filled out the Reality Judgment and Presence Questionnaire (RJPQ) and ITC-Sense of Presence Inventory (ITC-SOPI). The results showed that the VRE induced a sense of presence and was felt as real for both groups, without differences in the experience of 'ease' with the VRE, sense of physical space, or the ecological validity assigned to the virtual kitchen and eating virtually. However, the ED patients reported paying more attention and experiencing greater emotional involvement and dysphoria after virtual eating. The results suggest that the VRE was clinically meaningful to the ED patients and might be a relevant therapy tool for normalizing their eating patterns.

Summon y la Biblioteca Virtual de la UOC

Presentació a la jornada Summon Day on es mostra el procés d'implementació i adaptació de l'eina Summon de Proquest a la Biblioteca Virtual de la UOC. Es presenten accions, dades i valoracions.

L'Aprenentatge virtual com a una nova forma d'ensenyar i d'aprendre a través de les tecnologies de la informació i la comunicació

Els avenços tecnològics de les àrees de la informació i la comunicació estan propiciant un canvi cultural important que repercuteix directament en el món de l'aprenentatge i de l¿ensenyament. L'aprenentatge instrumental d'aquestes tecnologies de la informació i la comunicació (TIC) a priori i l'aprenentatge a través d'aquestes tecnologies amb la finalitat d'accedir a un major coneixement ha provocat que el procés d'ensenyament i aprenentatge s'estengui al llarg de la vida («Life long learning») de qualsevol persona que, per la seva professió, necessiti actualitzar els seus coneixements. Per això, com es podrà apreciar en el present article, les noves línies d'investigació s¿orienten envers dos tipus d'estudi: optimitzar el disseny dels sistemes d'e-learning i analitzar els aspectes diferencials dels e-learners. A més, en l¿article, se¿ns dóna a conèixer com s'està desenvolupant el camp de l'aprenentatge virtual en aquest moment, en particular en l'àmbit de les universitats europees.