19 scalp electrode (EEG) and 8 intra-cranial electrode (iEEG) are recorded simultaneously with a common reference. EEG data is subjected to independent component analysis (ICA) and localisation of components in grey matter is estimated by the sLORETA inverse solution. Correlation between the time series of two independent components and intra-cranial recordings is very high (computed over 23552...

A new technique is proposed for paratubal electromyography, using a surface, non-invasive, electrode applied transnasally under nasopharyngoscope guidance. This electrode records activity of the tensor veli palatini muscle during swallowing. This technique is of interest for two reasons: endoscopic guidance offers the possibility to check correct positioning of the electrode recording at tensor...

Primer on physiological techniques Different recording techniques:-Intracellular recording-Extracellular recording-Imaging Intracellular recording Record inside the cell using glass (why not metal?) electrodes. $$ This technique allows the experimenter to record subthreshold responses, and to understand mechanisms behind a cell's response properties. Whole-cell recording is a modern form of int...

UNLABELLED We report a descriptive analysis-interpretation of quantitative electroencephalography (QEEG) data for the metric of power in patients with tinnitus of the severe disabling type (N = 61). The results are based on a statistical analysis of the data compared to a normative database as calculated in Z scores, controlling for the factors of age, gender, IQ, and the like. METHOD We anal...

Maintaining a stable electrode potential is critical for patch-clamp measurements. The electrode potential of conventional patch electrode-holder assembly, where an Ag/AgCl wire is in direct contact with the patch pipette filling solution, is subject to drift if the pipette solution contains a low concentration of chloride ions (Cl-). We developed an agar bridge of 3 M KCl filled in a polyimide...

− Power distribution lines are a major source of interference in ECG recordings obtained with surface electrodes. Displacement currents coupled to electrodes, their leads and directly into the body, and stray capacitance in power supply transformers, result into differential-mode, common-mode and isolation-mode interference. Shielding electrode leads reduces displacement currents coupled to the...

The fabrication and characteristics of a novel multiunit recording electrode and modified brain slice chamber suitable for long-term recording from brain slices are described. The electrode consisted of an electrolyte-filled glass micropipette with a 20-50 microns thick wax-coated bundle of 5-micron diameter carbon fibers extending 2.5 cm from the tapered end and an AgCl-coated silver wire inse...

Intracellular recording of action potentials is important to understand electrically-excitable cells. Recently, vertical nanoelectrodes have been developed to achieve highly sensitive, minimally invasive and large-scale intracellular recording. It has been demonstrated that the vertical geometry is crucial for the enhanced signal detection. Here we develop nanoelectrodes of a new geometry, name...

Extracellular, large scale in vivo recording of neural activity is mandatory for elucidating the interaction of neurons within large neural networks at the level of their single unit activity. Technological achievements in MEMS-based multichannel electrode arrays offer electrophysiological recording capabilities that go far beyond those of classical wire electrodes. Despite their impressive cha...

We describe a cuff-type electrode specifically designed for recording from, and electrical stimulation of, cut nerves in acute experiments on small animals. Unlike existing designs of cuff electrodes, it is simple to manufacture, inexpensive and takes little time to implant. The electrode was tested on the hypoglossal, phrenic, recurrent laryngeal, and superior laryngeal nerves in anesthetized ...