Title: The usage of virtual reality in therapy of patients with neglect syndrome with consideration of a cybersickness risk. Objective: To find out if stroke patients with neglect syndrome tend to have higher risk of gaining cybersickness after using virtual reality compared to stroke patients without neglect syndrome and healthy population. Also, to find out if the severity of neglect syndrome has correlation with the severity of gained cybersickness. Afterwards to evaluate the trend of making games in virtual reality for treating neglect syndrome with consideration of a cybersickness risk. Methods: The experiment participants played game in virtual reality developed for treating neglect syndrome for ten minutes. During the game participants were seated and were playing using head movements. A HTC VIVE console was used to deliver the virtual reality game. Participants were divided into 3 groups: the group Zdraví (n = 12) without neurological impairment, the group CMP (n = 6) for stroke patients without neglect syndrome and the group Neglect (n = 10) for stroke patients with neglect syndrome (KF-NAP ≥ 1). Each proband had to fill Sickness Simulator Questionnaire which was used to detect cybersickness before and after playing the game in virtual reality. Collecting and sorting of the data was done...

As Virtual Reality grows larger as a commercial product for private use, Virtual Reality Sickness emerges as an increasingly common issue. The knowledge about this type of motion sickness has been around for a long time, and there is no shortage of research on the subject, but in many cases it is based on technology that is fundamentally different from today's. This study aimed at investigating the impact of velocity on Virtual Reality Sickness through tests performed in a simulation of a rollercoaster optimized for use with Samsung Gear VR. A quantitative survey was performed where 21 participants tested the simulation at three different velocities on three separate days in which the level of motion sickness was estimated using standardized forms during all test periods. The results indicate a difference between the different velocities ability to induce Virtual Reality Sickness, however, the evidence was not sufficient to prove that this was not due to chance. Analysis, on the other hand, indicates that there is a positive correlation between Virtual Reality Sickness and presence, the feeling of being in a certain environment, though physically being elsewhere. / I takt med att Virtual Reality växer sig större som en kommersiell produkt för privat bruk så träder Virtual Reality Sickness fram som ett allt mer utbrett problem. Vetskapen om denna typ av åksjuka har funnits länge och det råder ingen brist på forskning i ämnet, men i många fall är den byggd på teknik som är fundamentalt annorlunda än dagens. Denna studie ämnade att undersöka rörelsehastighetens påverkan på Virtual Reality Sickness genom tester utförda i en simulering av en berg- och dalbana optimerad för användning med Samsung Gear VR. En kvantitativ undersökning utfördes där 21 deltagare fick testa simuleringen i tre olika hastigheter under tre separata dagar i vilken nivån av åksjuka uppskattades med hjälp av standardiserade formulär under samtliga testtillfällen. Resultaten tyder på en skillnad mellan de olika hastigheternas förmåga att framkalla Virtual Reality Sickness, dock var inte underlagen tillräckliga för att bevisa att detta inte berodde på slumpen. Analys tyder däremot på att det finns en positiv korrelation mellan Virtual Reality Sickness och presence, känslan av att befinna sig i en viss miljö fast att man fysiskt är någon annanstans.

The present research attempted to use display design as a means to mitigate the occurrence and severity of symptoms of motion sickness and increase performance due to reduced “general effects” in an uncoupled motion environment. Specifically, several visual display manipulations of a 360° indirect vision system were implemented during a target detection task while participants were concurrently immersed in a motion simulator that mimicked off-road terrain which was completely separate from the target detection route. Results of a multiple regression analysis determined that the Dual Banners display incorporating an artificial horizon (i.e., AH Dual Banners) and perceived attentional control significantly contributed to the outcome of total severity of motion sickness, as measured by the Simulator Sickness Questionnaire (SSQ). Altogether, 33.6% (adjusted) of the variability in Total Severity was predicted by the variables used in the model. Objective measures were assessed prior to, during and after uncoupled motion. These tests involved performance while immersed in the environment (i.e., target detection and situation awareness), as well as postural stability and cognitive and visual assessment tests (i.e., Grammatical Reasoning and Manikin) both before and after immersion. Response time to Grammatical Reasoning actually decreased after uncoupled motion. However, this was the only significant difference of all the performance measures. Assessment of subjective workload (as measured by NASA-TLX) determined that participants in Dual Banners display conditions had a significantly lower level of perceived physical demand than those with Completely Separated display designs. Further, perceived iv temporal demand was lower for participants exposed to conditions incorporating an artificial horizon. Subjective sickness (SSQ Total Severity, Nausea, Oculomotor and Disorientation) was evaluated using non-parametric tests and confirmed that the AH Dual Banners display had significantly lower Total Severity scores than the Completely Separated display with no artificial horizon (i.e., NoAH Completely Separated). Oculomotor scores were also significantly different for these two conditions, with lower scores associated with AH Dual Banners. The NoAH Completely Separated condition also had marginally higher oculomotor scores when compared to the Completely Separated display incorporating the artificial horizon (AH Completely Separated). There were no significant differences of sickness symptoms or severity (measured by self-assessment, postural stability, and cognitive and visual tests) between display designs 30- and 60-minutes post-exposure. Further, 30- and 60- minute post measures were not significantly different from baseline scores, suggesting that aftereffects were not present up to 60 minutes post-exposure. It was concluded that incorporating an artificial horizon onto the Dual Banners display will be beneficial in mitigating symptoms of motion sickness in manned ground vehicles using 360° indirect vision systems. Screening for perceived attentional control will also be advantageous in situations where selection is possible. However, caution must be made in generalizing these results to missions under terrain or vehicle speed different than what is used for this study, as well as those that include a longer immersion time.

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Made available in DSpace on 2014-08-20T13:49:45Z (GMT). No. of bitstreams: 1 Dissertacao Zelma.pdf: 1509011 bytes, checksum: 06fbab8c928442ee168f43fa566fa01f (MD5) Previous issue date: 2013-02-19 / Due to new laws that propose some transformations, new perspectives were incorporated into care provision to patients with mental disorders. In the current scenario, the Centers for Psychosocial Care (CAPS) and therapeutic residential services (SRT), are of special relevance as strategic services in the psychiatric reform process by integrating mental health network, rehabilitating and restoring the social reinsertion to replace previous models that were centered in isolation. It is worth noting that the social support enhances actions that respect the individual´s singularities, supporting treatments where people with mental disorder can live in society. Thus, this support becomes crucial as it provides assistance and encouragement to individuals with physical or emotional disability so they can overcome their limitations. This study is a subproject of the REDESUL Project Networks that rehabilitate: evaluating innovative experiences of composing networks of psychosocial care. The collection of quantitative data was conducted by five interviewers in each of the chosen five municipalities in Rio Grande do Sul (RS), from September to December 2009. It is a cross-sectional epidemiological study aimed to describe the perception of social support by the Psychosocial Care Center (CAPS) users and the residents of Therapeutic Residential Service (SRT). The outcome of the study, perceived social support, was measured using the version of SSQ-27 (Social Support Questionnaire) and the independent variables included demographic, socioeconomic, morbidity, family and social support. 392 subjects were interviewed, being 249 CAPS users and 143 residents of SRT in 39 services (6 and 33 CAPS SRT). The results have shown the highest satisfaction degree among women, married or with a partner, with an income in the last month higher than two minimum wages that received financial support. The study has identified the importance of social support in the recovery process and has reached its purpose of evaluating the user perception of mental health with social support coming from long periods of psychiatric living in SRT compared with users Caps. Finally, the potential for comprehensive epidemiological studies in assessing the conditions of social support is highlighted. This study allowed the identification of factors associated with social support, recommending measures to improve public in the areas of Primary Care and Mental Health, aiming to improve the identification of sources of social support. / Novos olhares foram incorporados à condução do cuidado em saúde mental, e, os Centros de Atenção Psicossocial (CAPS) e os Serviços Residenciais Terapêuticos (SRT) assumiram especial relevância, como serviços estratégicos no processo da reforma psiquiátrica, por integrar a rede de saúde mental, reabilitando e restabelecendo o retorno social em substituição ao modelo anterior que estava centrado no isolamento. Cabe destacar que o enfoque no apoio social das pessoas com sofrimento psíquico pode potencializar ações em respeito às suas singularidades e subsidiar a articulação entre o tratamento e a convivência na sociedade. As fontes de apoio social são fundamentais, à medida que proporcionam assistência e encorajamento para os indivíduos com dificuldades físicas ou emocionais para que eles possam superar suas limitações. Este estudo é um subestudo do Projeto quantitativo da pesquisa REDESUL (Redes que reabilitam: avaliando experiências inovadoras de composição de redes de atenção psicossocial). A coleta de dados do projeto quantitativo foi realizada em cinco municípios do Rio Grande do Sul (RS), por cinco entrevistadores por município, no período de setembro a dezembro de 2009. Trata-se de estudo epidemiológico de delineamento transversal com o objetivo de descrever a percepção do apoio social dos usuários CAPS e moradores de SRT. O desfecho do estudo, apoio social percebido, foi aferido através da versão do SSQ-27 (Support Social Questionnaire) e as variáveis independentes incluíram aspectos demográficos, socioeconômicos, morbidade, apoio familiar e social. Entrevistou-se 392 sujeitos, sendo 249 usuários de CAPS e 143 moradores de SRT, em 39 serviços (6 CAPS e 33 SRT). Os resultados indicam as maiores médias de satisfação e de número de apoio social percebidos em mulheres, casados ou com companheiro, com renda no último mês em mais de dois salários mínimos, e que recebem apoio financeiro. Além destes importantes achados o estudo contribuiu para identificar a importância do apoio social no processo de recuperação. O estudo atingiu seu objetivo que foi avaliar a percepção de apoio social de pessoas portadoras de sofrimento psíquico advindos de longos períodos de internações psiquiátricas que moram em SRT em comparação com usuários de CAPS. Finalmente destaca-se a potencialidade de estudos epidemiológicos abrangentes na avaliação das condições do apoio social. Este estudo permitiu a identificação de fatores que possibilitam aproximar moradores e usuários das políticas públicas e das propostas nas áreas de Atenção Básica e de Saúde Mental, com a percepção voltada para a identificação de fontes de apoio social.

Magister Psychologiae - MPsych / The aim of the present study was to determine whether it was possible to identify changes in levels of postpartum depression and maternal adjustment and attitude in primiparae before and after birth. It aimed, furthermore, at assessing certain risk factors that could provide an understanding of the etiological factors (causes, determinants) influencing postpartum levels of depression and maternal adjustment and attitude. The study focused on risk factors among married and unmarried primiparae (first time mothers), with a view to establishing vulnerability profiles of the respective groups. The specific risk factors that formed part of the investigation were social support, personality (neuroticism) and life events. All the subjects investigated were recruited from the Mitchells Plain Maternity and Obstetrics Unit. A sample of 70 subjects, in the third trimester of pregnancy, voluntarily participated in the first part of this study. Of these, 26 belonged to the married group and 44 belonged to the unmarried group. As a result of the attrition factor, 57 subjects constituted the final sample for analysis. The final sample comprised 20 married and 37 unmarried subjects. Subjects were followed up four to eight weeks postpartum. Results revealed that there were no significant changes in levels of depression between the married and unmarried groups, either before or after delivery. Of significance was that with the event of birth, the depression scores amongst women rated high in neuroticism decreased significantly. Married women with high social support satisfaction scores were found to have low depression scores. Similarly, married women who experienced fewer negative life events had lower levels of depression than did the unmarried women who experienced fewer negative life events. The maternal adjustment and attitude scores did not change before or after birth, except in the married group. The married group showed a significant increase in scores on the maternal adjustment and attitude scores after the birth of the child. Regarding personality (neuroticism), the high neuroticism scorers had significantly lower maternal adjustment and attitude than did the low neuroticism scorers. As was the case with social support and depression, married women with high social support had a higher maternal adjustment and attitude. A significant effect of negative life events on maternal adjustment and attitude was only found for the married women (after delivery) who experienced a low number of life events. A stepwise multiple regression analysis was performed, in order to yield a model in which the depression and maternal adjustment and attitude scores would be predicted by risk factors. The finding of this analysis for both depression and maternal attitude and adjustment was not significant. Social Identity theory was suggested as a possible interpretation of these results. Future research which views social identity as a factor in understanding postpartum depression and maternal adjustment and attitude has been proposed .

<p>When users begin to experience virtual reality (VR) for the first time, they can be met with some degree of motion sickness and nausea, especially if continuous joystick locomotion is used. The symptoms that are induced during these VR experiences fall under the umbrella term cybersickness, and due to these uncomfortable experiences, these users can get a bad first impression and abandon the innovative technology, not able to fully appreciate the convenience and fascinating adventures VR has to offer. As such, this project compares the effects of two cybersickness mitigation methods (Dynamic Field of View (FOV) and Virtual Reference Frame), both against each other and combined, on user-reported cybersickness symptoms to determine the best combination to implement in commercial applications to help create more user-friendly VR experiences. The hypothesis is that combining the FOV reduction and the resting frame methods can mitigate VR cybersickness more effectively without hindering the user’s experience and the virtual nose method is more potent at mitigating cybersickness compared to dynamic FOV. To test these hypotheses, an experimental game was developed for the Meta Quest 2 with five levels: a tutorial level and four maze levels (one for each scenario). The participants were asked to complete the tutorial level until they got used to the virtual reality controls, and then they were instructed to complete the maze level twice with one of the following conditions for each run: no method, dynamic field of view only, virtual nose only, and dynamic field of view and virtual nose combined. After completing each maze trial, the participants were asked to complete a simulator sickness questionnaire to get their thoughts on how much sickness they felt during the test. Upon concluding the testing phase with 36 participants and compiling the data, the results showed that while the subjects preferred the dynamic FOV method even though they were able to complete the trials significantly faster with the virtual nose method, it is inconclusive regarding which method is truly more effective. Furthermore, the results showed that it is also inconclusive if the scenario with both methods enabled is significantly better or worse than either method used separately.</p>