Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation technique to treat brain disorders by using constant, low stimulate targeted cortex regions. Compared the conventional tDCS that uses two large pad electrodes, multiple electrode has recently received more attention. It able achieve better performance in terms of intensity and focality. In this paper, we first esta...

Functional near-infrared spectroscopy (fNIRS), acquired simultaneously with electroencephalography (EEG), allows the investigation of hemodynamic brain responses to epileptic activity. Because the presumed epileptogenic focus is patient-specific, an appropriate source/detector (SD) montage has to be reconfigured for each patient. The combination of EEG and fNIRS, however, entails several constr...

We previously reported a novelty P3 reduction in depressed patients compared to healthy controls (n=20 per group) in a novelty oddball task using a 31-channel montage. In an independent replication and extension using a 67-channel montage (n=49 per group), reference-free current source density (CSD) waveforms were simplified and quantified by a temporal, covariance-based principal components an...

Fig. 1 a —c. Motion sensitive neurons of the lobula plate of Calliphora erythrocephala stained by intracellular injection of procion yellow. The tracings (a, b) were obtained from 12 «m frontal sections and show the injected cells drawn into a semi-schematic vertical elevation of the brain (lateral structures, indicated by thin lines: lobula plate and medulla; oval structure in the center: oeso...

The source of the EEG potentials recorded from the scalp is the excitatory and inhibitory postsynaptic potentials of pyramidal neurons. Each pyramidal neuron has an apical dendrite and multiple basal dendrites (Fig. 2.1). Excitation of the postsynaptic membrane at the apical dendrite leads to depolarization with an intracellular shift of positive ions (Na). Subsequently the extracellular space ...

Abstract High-definition transcranial direct current stimulation (HD-tDCS) seems to overcome a drawback of traditional bipolar tDCS: the wide-spread diffusion electric field. Nevertheless, most differences that characterise two techniques are based on mathematical simulations and not real, behavioural neurophysiological, data. The study aims compare widespread tDCS montage (i.e., Conventional w...

There is not a specific Alzheimer's disease (AD) diagnostic test. AD diagnosis relies on clinical history, neuropsychological, and laboratory tests, neuroimaging and electroencephalography. Therefore, new approaches are necessary to enable earlier and more accurate diagnosis and to measure treatment results. Quantitative EEG (qEEG) can be used as a diagnostic tool in selected cases. The aim of ...

La production d’un film pour le cinéma ou l’audiovisuel distingue l’étape de tournage celle la postproduction. Celle-ci, qui regroupe les opérations montage, montage son et paroles, bruitage mixage, est souvent associée à une dimension créative privilégiée, donnant lieu mise en forme expressive du matériau filmique constitué au cours tournage. Cependant, l’isolement inhérent ces a favorisé dern...