Dores A.R.,Escola Superior de Tecnologia da Saude Do Porto ESTSP IPP |
Dores A.R.,University of Porto |
Almeida I.,A+ Network |
Barbosa F.,University of Porto |
And 5 more authors.
NeuroRehabilitation | Year: 2013
BACKGROUND: Examining changes in brain activation linked with emotion-inducing stimuli is essential to the study of emotions. Due to the ecological potential of techniques such as virtual reality (VR), inspection of whether brain activation in response to emotional stimuli can be modulated by the three-dimensional (3D) properties of the images is important. OBJECTIVE: The current study sought to test whether the activation of brain areas involved in the emotional processing of scenarios of different valences can be modulated by 3D. Therefore, the focus was made on the interaction effect between emotion-inducing stimuli of different emotional valences (pleasant, unpleasant and neutral valences) and visualization types (2D, 3D). However, main effects were also analyzed. METHODS: The effect of emotional valence and visualization types and their interaction were analyzed through a 3 × 2 repeated measures ANOVA. Post-hoc t-tests were performed under a ROI-analysis approach. RESULTS: The results show increased brain activation for the 3D affective-inducing stimuli in comparison with the same stimuli in 2D scenarios, mostly in cortical and subcortical regions that are related to emotional processing, in addition to visual processing regions. CONCLUSIONS: This study has the potential of clarify brain mechanisms involved in the processing of emotional stimuli (scenarios' valence) and their interaction with three-dimensionality. © 2013 - IOS Press and the authors. All rights reserved. Source
Silva S.,Polytechnic Institute of Advanced Science |
Silva S.,Psychology and Health Research Unit UnIPSa |
Sousa D.,Hospital de Sao Joao |
Rezende V.,Hospital da Santa Casa da Misericordia do Marco de Canavezes |
And 3 more authors.
Advances in Clinical and Experimental Medicine | Year: 2012
Background. Quality of life (QoL) is currently of particular importance to health services and is regarded a key dimension for the assessment of stroke outcomes. However there are few instruments available for the Portuguese population. Objectives. The aim of the present work is to determine the psychometric properties of the Portuguese version of the Stroke Quality of Life Scale (ECVI-38), including acceptability, construct and criterion validity. Material and Methods. The sample comprised 51 patients with a clinical history of stroke (2 to 24 months prior) from the outpatient clinic of two Portuguese hospitals.. Patients with neuropsychiatric pathologies or other health conditions that might affect QoL were excluded. Parallel to the application of the ECVI-38, several other tests were used in order to determine the discriminative and concurrent validity of the scale. Results. The ECVI-38 showed good acceptability, with missing data below 10%, and ceiling and floor effects below 80%. Cronbach's alpha for the total scale was 0.94 and ranged between 0.7 and 0.9 in each domain. ECVI-38 results were able to differentiate patients according to the severity of neurological impairment. Every domain of the scale correlated significantly with instruments of similar content. Conclusions. The Portuguese version of the ECVI-38 showed good psychometric characteristics. © Copyright by Wroclaw Medical University. Source