Concept

Gamma wave

Publications associées (293)

Transcranial direct current stimulation: State of the art 2008

Effects of weak electrical currents on brain and neuronal function were first described decades ago. Recently, DC polarization of the brain was reintroduced as a noninvasive technique to alter cortical activity in humans. Beyond this, transcranial direct c ...

2008

Person Authentication using Brainwaves (EEG) and Maximum A Posteriori Model Adaptation

José del Rocio Millán Ruiz, Sébastien Marcel

In this paper, we investigate the use of brain activity for person authentication. It has been shown in previous studies that the brain-wave pattern of every individual is unique and that the electroencephalogram (EEG) can be used for biometric identificat ...

2007

Consideration of the effect of the anesthesia in the thalamocortical assemblies

Martin Hasler, Kumiko Oshima, Borja Ibarz Gabardos

Despite intensive research efforts, the effects of anesthesia on brain physiology and function have not been satisfactorily explained yet. Nevertheless, from what has been discovered up to now, we can attribute the effect of the anesthetics to changes in c ...

2007

Visuo-Spatial Attention Frame Recognition for Brain-Computer Interfaces

José del Rocio Millán Ruiz, Ricardo Andres Chavarriaga Lozano, Eileen Lew Yi Lee, Pierre Ferrez

Objective: To assess the feasibility of recognizing visual spatial attention frames for Brain-computer interfaces (BCI) applications. Methods: EEG data was recorded with 64 electrodes from 2 subjects executing a visual spatial attention task indicating 2 t ...

2007

High-Resolution EEG Techniques for Brain-Computer Interface Applications

José del Rocio Millán Ruiz

High-resolution electroencephalographic (HREEG) techniques allow estimation of cortical activity based on non-invasive scalp potential measurements, using appropriate models of volume conduction and of neuroelectrical sources. In this study we propose an a ...

2007

Non-Invasive Estimates of Local Field Potentials for Brain-Computer Interfaces

José del Rocio Millán Ruiz, Pierre Ferrez

Recent experiments have shown the possibility to use the brain electrical activity to directly control the movement of robots or prosthetic devices in real time. Such neuroprostheses can be invasive or non-invasive, depending on how the brain signals are r ...

The MIT Press2007

Vibrotactile Feedback for Brain-Computer Interface Operation

José del Rocio Millán Ruiz

To be correctly mastered, Brain-Computer Interfaces (BCIs) need an uninterrupted flow of feedback to the user. This feedback is usually delivered through the visual channel. Our aim is to explore the benefits of vibrotactile feedback during usersï¿½ traini ...

2007

Error-Related EEG Potentials in Brain-Computer Interfaces

José del Rocio Millán Ruiz, Pierre Ferrez

Brain-computer interfaces (BCI), as any other interaction modality based on physiological signals and body channels (e.g., muscular activity, speech and gestures), are prone to errors in the recognition of subject's intent. An elegant approach to improve t ...

The MIT Press2007

Collinear contextual suppression in schizophrenic patients

Michael Herzog

Schizophrenic patients show aberrancies of contextual processing over a broad range. Of particular importance are low level contextual deficiencies since they might cause higher level processing deficits. It was previously found that schizophrenic patients ...

Elsevier2007

EEG-Based Brain-Computer Interaction: Improved Accuracy by Automatic Single-Trial Error Detection

José del Rocio Millán Ruiz, Pierre Ferrez

Brain-computer interfaces (BCIs), as any other interaction modality based on physiological signals and body channels (e.g., muscular activity, speech and gestures), are prone to errors in the recognition of subject's intent. An elegant approach to improve ...

2007

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