9 documents found, page 1 of 1

Event-related potentials modulated by the perception of sexual dimorphism: The ...

Sexual dimorphism has been proposed as one of the facial traits to have evolved through sexual selection and to affect attractiveness perception. Even with numerous studies documenting its effect on attractiveness and mate choice, the neurophysiological correlates of the perception of sexual dimorphism are not yet fully understood. In the present study, event-related potentials (ERPs) were recorded during visua...

Event-related potentials modulated by the perception of sexual dimorphism: the ...

Sexual dimorphism has been proposed as one of the facial traits to have evolved through sexual selection and to affect attractiveness perception. Even with numerous studies documenting its effect on attractiveness and mate choice, the neurophysiological correlates of the perception of sexual dimorphism are not yet fully understood. In the present study, event-related potentials (ERPs) were recorded during visua...

Survey of indoor fungi in hospital environments

Application of SVM-RFE on EEG signals for detecting the most relevant scalp reg...

In this work, event related potentials (ERPs) induced by visual stimuli categorized with different value of affective valence are studied. EEG signals are recorded during visualization of selected pictures belonging to International Affective Picture System (IAPS). A Morlet wavelet filter is used to transform the EEG input space to a topography-time–frequency feature space. Support vector machine-recursive feat...

Individual EEG differences in affective valence processing in women with low an...

Objective: In this study, individual differences in brain electrophysiology during positive and negative affective valence processing in women with different neuroticism scores are quantified. Methods: Twenty-six women scoring high and low on neuroticism participated on this experiment. A support vector machine (SVM)-based classifier was applied on the EEG single trials elicited by high arousal pictures with ne...

Feature extraction and classification of biosignals: emotion valence detection ...

In this work a valence recognition system based on electroencephalograms is presented. The performance of the system is evaluated for two settings: single subjects (intra-subject) and between subjects (inter-subject). The feature extraction is based on measures of relative energies computed in short time intervals and certain frequency bands. The feature extraction is performed either on signals averaged over a...

Spectral turbulence measuring as feature extraction method from EEG on affectiv...

In biomedical and psychological applications dealing with EEG, a suitable selection of the most relevant electrodes is useful for lightening the data acquisition and facilitating the signal processing. Therefore,an efficient method for extracting and selecting features from EEG channels is desirable. Classification methods are more and more applied for obtaining important conclusions from diverse psychological ...

Clustering evoked potential signals using subspace methods

This work proposes a clustering technique to analyze evoked potential signals. The proposed method uses an orthogonal subspace model to enhance the single-trial signals of a session and simultaneously a subspace measure to group the trials into clusters. The ensemble averages of the signals of the different clusters are compared with ensemble averages of visually selected trials which are free of any artifact. ...

Micoteca da Universidade do Minho (MUM): uma colecção de fungos filamentosos a ...

Em 2001 a OCDE publica o relatório: Biological Resource Centres – Underpinning the Future of Life Sciences and Biotechnology apontando para a necessidade do reforço e modificações dos centros de recursos biológicos no sentido destes estarem à altura das necessidades do século XXI. Os centros de recursos biológicos (CRBs) são entendidos como uma parte essencial da infra­estrutura que suportam as ciências da vida...