[Show abstract][Hide abstract] ABSTRACT: Ainda que a saúde mental dos doentes crónicos seja cada vez mais uma preocupação dos profissionais de saúde, não é generalizada a avaliação rotineira do seu funcionamento sexual, que poderá ter impacto sobre a sua saúde mental. O objectivo do presente estudo é explorar a relação entre funcionamento sexual e saúde mental em doentes crónicos. Foram avaliados 77 adultos com diabetes tipo 1, 40 com diabetes tipo 2, 100 com esclerose múltipla, 79 com epilepsia, 205 com obesidade e 106 com cancro, recorrendo a um Questionário Sócio-demográfico e Clínico, à Escala de Função Sexual do MSQOL-54 e à Escala de Saúde Mental do SF-36. Na amostra total, verificaram-se correlações lineares estatisticamente significativas entre Funcionamento Sexual e Saúde Mental nos dois sexos
II Congresso Ibero-Americano de Psicologia da Saúde e III Congresso Luso-Brasileiro de Psicologia da Saúde, Atas do II Congresso Ibero-Americano de Psicologia da Saúde e III Congresso Luso-Brasileiro de Psicologia da Saúde (s. pag.). Faro Portugal: CIEO-Universidade do Algarve- ISBN: 978-989-20-3934-3; 07/2013
Psicologia da saúde: Desafios à promoção da Saúde em Doenças crónicas, Lisboa,PT edited by J.Pais-Ribeiro, I. Leal, A.Pereira, S.Monteiro, 02/2012: chapter Preditores da qualidade de vida de pessoas com doenças crónicas: pages 283-291; Editora Placebo., ISBN: 978-989-8463-30-2
[Show abstract][Hide abstract] ABSTRACT: Efficacy measurement of epilepsy treatment is frequently overwhelmed by the multiple variables involved: interactions between
antiepileptic drugs are sometimes inextricable (Gram et al., 1981); and seizure factors (pattern, severity and frequency)have different degrees of importance on patient status (neurological, psychiatric or psychological well—being) influencing
epilepsy evolution. These variables are important not only for epilepsy prognosis but they also tend to operate whatever the
stage of epilepsy (Shorvon, 1984). The lack of objective measures of data, the quantification of all intervening variables (from the seizures and from the
patients), the side-effects of drugs, the patient—to—patient differences, the length of disease, the duration of study design
and sample dimensions are supplementary difficulties in epilepsy assessment. How to manage such variables in order to establish
stable and reproducible criteria to assess epilepsy evolution or how to measure the relevance of factors as indexes of the
evolution of this clinical phenomena are questions to be addressed by a clinimetric approach (Feinstein, 1987). Introducing concepts of clinimetrics with parametrization of appropriate epilepsy indexes, seizure components were used
to assess epilepsy evolution. Rating scales were developed in order to solve some difficulties in the assessment of antiepileptic
drugs (AED) efficacy.
Psicologia da Saúde: Sexualidade Género e Saúde, ISPA Edição edited by Isabel Leal & J. Pais Ribeiro, 02/2010: chapter O Optimismo como Mediador entre a Personalidade e a Qualidade de Vida em Pessoas com Doença Crónica: pages 101-109;
[Show abstract][Hide abstract] ABSTRACT: In this work we discuss and apply projective subspace techniques to both multichannel as well as single channel recordings. The single-channel approach is based on singular spectrum analysis(SSA) and the multichannel approach uses the extended infomax algorithm which is implemented in the opensource toolbox EEGLAB. Both approaches will be evaluated using artificial mixtures of a set of selected EEG signals. The latter were selected visually to contain as the dominant activity one of the characteristic bands of an electroencephalogram (EEG). The evaluation is performed both in the time and frequency domain by using correlation coefficients and coherence function, respectively.
Conference proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference 02/2008; 2008:4395-8.
[Show abstract][Hide abstract] ABSTRACT: Objective: To explore the usefulness of the Portuguese HADS for outpatients with focal epilepsy. Methods: Ninety-nine outpatients were assessed using a socio-demographic and clinical questionnaire, the MHI-5, and the HADS (individual interview). Results: HADS proved to be understandable and well accepted by patients, with alpha ranges from 0.72 to 0.82. It also correlated with MHI-5 and some demographic and clinical variables. Conclusions: The results support the use of the Portuguese HADS as a screening tool for these patients (facial validity; internal consistency; construct validity), though the associations between HADS scores and some demographic and clinical variables question its validity. The results underscore the importance of assessing patient affective status, as anxiety and depression are common and provide additional insight into the association of anxiety/depression with certain demographic and clinical variables. The reasons for the inconsistencies between these results and published literature should be explored in future studies.
[Show abstract][Hide abstract] ABSTRACT: Epilepsy is a relatively frequent chronic condition with an important impact on the health perception and quality of life (QOL) of patients. The aim of the present study was to identify variables related to health status perception and QOL in persons with epilepsy. Participants were 200 persons with epilepsy, 53.5% of whom were males. The mean age was 39.6; 95% had seizures, and 99% were taking antiepileptic medication. The self-report questionnaire administered assessed four types of variables: demographic, disease, epilepsy-specific optimistic attitude, and outcome variables. Results demonstrated that an optimistic orientation is related to better perception of physical and mental health status and better perception of QOL. The variables that best predict positive outcomes are optimistic orientation, perception of cognitive functioning, and perception of seizure control. These results question the importance attributed to seizure characteristics for everyday functioning and everyday life of individuals with epilepsy, and stress the importance of facilitating an epilepsy-specific optimistic orientation.
[Show abstract][Hide abstract] ABSTRACT: In this work, we propose the correction of univariate single channel EEGs using a kernel technique. The EEG signal is embedded in its time-delayed coordinates obtaining a multivariate signal. A kernel subspace technique is used for denoising and artefact extraction. The proposed kernel method follows a greedy approach to use a reduced data set to compute a new basis onto which to project the mapped data in feature space. The pre-image of the reconstructed multivariate signal is computed and the embedding is reverted. The resultant signal is the high amplitude artifact which must be subtracted from the original signal to obtain a corrected version of the underlying signal.
Conference proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference 02/2007; 2007:5441-4.
[Show abstract][Hide abstract] ABSTRACT: In this work, we present a method to extract high-amplitude artefacts from single channel electroencephalogram (EEG) signals. The method is called local singular spectrum analysis (local SSA). It is based on a principal component analysis (PCA) applied to clusters of the multidimensional signals obtained after embedding the signals in their time-delayed coordinates. The decomposition of the multidimensional signals in each cluster is achieved by relating the largest eigenvalues with the large amplitude artefact component of the embedded signal. Then by reverting the clustering and embedding processes, the high-amplitude artefact can be extracted. Subtracting it from the original signal a corrected EEG signal results. The algorithm is applied to segments of real EEG recordings containing paroxysmal epileptiform activity contaminated by large EOG artefacts. We will show that the method can be applied also in parallel to correct all channels that present high-amplitude artefacts like ocular movement interferences or high-amplitude low frequency baseline drifts. The extracted artefacts as well as the corrected EEG will be presented.
Computer Methods and Programs in Biomedicine 09/2006; 83(2):125-38. · 1.09 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Electroencephalogram (EEG) recordings are often distorted by high-amplitude artifacts which hamper its correct visual inspection. In this work we present a method which can be applied separately to each channel to extract high-amplitude components. The method is called local singular spectrum analysis (SSA) and is a principal component analysis in clusters formed after embedding the signals in their time-delayed coordinates. The extracted signal can be subtracted from the original channel resulting in a corrected EEG version. The algorithm is applied to real EEG segments containing paroxysmal epileptiform activity contaminated by artifactual activity. The extracted artifact as well as the corrected EEG will be presented.
[Show abstract][Hide abstract] ABSTRACT: We present a method based on singular spectrum analysis to remove ocular artifacts (EOG) from an electroencephalogram (EEC). After embedding the EEG signals in a feature space of time-delayed coordinates, feature vectors are clustered and the principal components (PCs) are computed locally within each cluster. Then we assume that the EOG artifact is associated with the PCs belonging to the largest eigenvalues. We incorporate a minimum description length (IMDL) criterion to estimate the number of eigenvectors needed to represent the EOG artifact faithfully. The EOG signal thus extracted is then subtracted from the original EEG signal to obtain the corrected EEG signal we are interested in.
[Show abstract][Hide abstract] ABSTRACT: Video game seizures have been reported in photosensitive and non-photosensitive patients with epilepsy. The game Super Mario World, has led to many cases of first seizures. We examined whether this game was indeed more provocative than other programs and whether playing the game added to this effect.
We prospectively investigated 352 patients in four European cities, using a standard protocol including testing of a variety of visual stimuli. We correlated historical data on provocative factors in daily life with electroencephalographic laboratory findings.
The video game, Super Mario World proved more epileptogenic than standard TV programs and as provocative as programs with flashing lights and patterns. Most striking was the fact that video game-viewing and-playing on the 50 and 100 Hz TV was significantly more provocative than viewing the standard program (P < 0.001, P < 0.05 respectively). Playing the video game Mario World on a 50 Hz TV, appeared to be significantly more provocative than playing this game on the 100 Hz TV (P < 0.001). Of 163 patients with a history of TV-, VG- or CG-seizures, 85% of them showed epileptiform discharges in response to photic stimulation, 44% to patterns, 59% to 50 Hz TV and 29% to 100 Hz TV.
Children and adolescents with a history of video game seizures are, in the vast majority, photosensitive and should be investigated with standardised photic stimulation. Games and programs with bright background or flashing images are specifically provocative. Playing a video game on a 100 Hz TV is less provocative [published with videosequences].
Epileptic disorders: international epilepsy journal with videotape 06/2002; 4(2):121-8. · 0.90 Impact Factor