Search Results - "Felix, Leonardo B."

The global Beta test for hidden periodicities in signals and its extensions to multivariate systems by Felix, Leonardo B., Gonçalves, Moisés C., Zanotelli, Tiago, Miranda de Sá, Antonio M.F.L., Simpson, David M.

“…•Three new detection techniques based on the global F-test are proposed.•We applied the detectors to synthetic and EEG signals.•The proposed detectors showed…”
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Classification of auditory selective attention using spatial coherence and modular attention index by de Souza, Ana Paula, Soares, Quenaz B., Felix, Leonardo B., Mendes, Eduardo M.A.M.

“…•Spatial coherence using contralateral attention index is a tool for auditory BCI.•A new method is proposed using modular attention index.•The method is used…”
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Multivariate evoked response detection based on the spectral F-test by Rocha, Paulo Fábio F., Felix, Leonardo B., Miranda de Sá, Antonio Mauricio F.L., Mendes, Eduardo M.A.M.

“…•We propose a new multivariate objective response detector based in the spectral F-test.•Detector's performance increases with number of signals.•The false…”
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Acute neuromuscular response during eccentric overload protocol by using a mechanical device to increase the load by Lanza, Marcel B, Pertence, Antônio E M, Andrade, André G P, Peixoto, Gustavo H, Felix, Leonardo B, Chagas, Mauro H

“…DOI: http://dx.doi.org/10.5007/1980-0037.2017v19n4p375 The aim of this study was to propose a mechanical device that could increase the mechanical load during…”
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Protein restriction after weaning modifies the calcium kinetics and induces cardiomyocyte contractile dysfunction in rats by Penitente, Arlete R, Novaes, Rômulo D, Chianca, Jr, Deoclécio A, da Silva, Márcia F, Silva, Marcelo E, Souza, Aline M A, Guatimosim, Silvia, Almeida, Pedro W M, Alves, Márcia N M, Felix, Leonardo B, Neves, Clóvis A, Natali, Antônio J

“…Protein restriction (PR) is associated with cardiovascular diseases. The purpose of this study was to investigate the effects on single ventricular…”
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Coherence estimate between a random and a periodic signal: Bias, variance, analytical critical values, and normalizing transforms by Miranda de Sá, Antonio Mauricio F.L., Ferreira, Danton D., Dias, Edson W., Mendes, Eduardo M.A.M., Felix, Leonardo B.

“…The present work deals with recent results on the sampling distribution of the magnitude-squared coherence (also called just coherence) estimate between a…”
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A matrix-based algorithm for estimating multiple coherence of a periodic signal and its application to the multichannel EEG during sensory stimulation by Miranda de Sa, A.M.F.L., Felix, L.B., Infantosi, A.F.C.

“…The coherence between the stimulation signal and the electroencephalogram (EEG) has been used in the detection of evoked responses. The detector's performance,…”
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Multi-channel evoked response detection using only phase information by Miranda de Sá, Antonio Mauricio F.L., Felix, Leonardo B.

“…The phase consistency of contiguous segments of the electroencephalogram (EEG) has been used in the detection of evoked responses to rhythmic stimulation. One…”
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Improving the detection of evoked responses to periodic stimulation by using multiple coherence—application to EEG during photic stimulation by Miranda de Sá, Antonio Mauricio F.L., Felix, Leonardo B.

“…The coherence between the stimulation signal and the electroencephalogram (EEG) has been used in the detection of evoked responses. However the detector’s…”
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Comments on "Sums, Products, and Ratios of Non-Central Beta Variables" by Saralees Nadarajah by Miranda de Sá, Antonio Mauricio F. L., Felix, Leonardo B., Mendes, Eduardo M. A. M.

“…Brief comments on "Sums, Products, and Ratios of Non-Central Beta Variables" by Saralees Nadarajah, which appeared in Communications in Statistics - Theory and…”
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Brain–computer interface in an inter-individual approach using spatial coherence: Identification of better channels and tests repetition using auditory selective attention by de Souza, Ana Paula, Soares, Quenaz B., Mendes, Eduardo M.A.M., Felix, Leonardo B.

“…Auditory Brain–Computer Interfaces (BCIs) have been studied with the main purpose of improving the quality of life of totally paralyzed people. BCIs based on…”
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Comparison of harmonic detection methods applied in a photovoltaic inverter during harmonic current compensation by Antunes, Felipe, Xavier, Lucas S., Cupertino, Allan F., Felix, Leonardo B., Pereira, Heverton A.

“…Traditional harmonic current detection methods track all harmonic contents of the load and the control tuning tends to be complex with low flexibility…”
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Comparison of sequential test strategies based on Monte Carlo simulations in the detection of auditory steady-state responses by De Souza Ragazzi, Victor Hugo, Gomes Caldeira, Alexandre, Nogueira Vaz, Patricia, Antunes, Felipe, Bonato Felix, Leonardo

“…It is common to use sequential testing strategies to help reduce the time of automated detection of an auditory steady-state response (ASSR). However, the…”
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Considering the effect of correlation between the channels in multivariate detectors for evoked responses in the electroencephalogram by Miranda de Sá, Antonio Mauricio F.L., Zanotelli, Tiago, Mendes, Eduardo M.A.M., Felix, Leonardo B., Simpson, David M.

“…•Multichannel EEG data can be used to enhance evoked responses detection.•The correlation between channels can lead to increased false positive rates…”
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Statistical aspects concerning signal coherence applied to randomly modulated periodic signals by Felix, L.B., de Sa, A.M.F.L.M., Mendes, E.M.A.M., Moraes, M.F.D.

“…The signal coherence (SC) function was developed for detecting signals that exhibit an inherent nondeterminism in their genesis. To allow the use of this…”
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Evaluation of the movement imagination training using the principal component analysis and magnitude-squared coherence as extractors of features by Souza, Ana P., Felix, Leonardo B., Tierra-Criollo, Carlos J.

“…This work investigates the Movement Imagination training using Principal Component Analysis (PCA) and Magnitude-Squared Coherence (MSC) as features extractor…”
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Classification of imaginary movements using the magnitude-squared coherence feature extractor by Souza, A. P., Filho, S. A. S., Felix, L. B., Maia, C. A., Tierra-Criollo, C. J.

“…This study investigates the use of the Magnitude - Squared Coherence (MSC) to extract features from three events: spontaneous electroencephalogram (EEG),…”
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