Piironen A, Weckström M, Vähäsöyrinki M. Ultrasmall and customizable multichannel electrodes for extracellular recordings. J Neurophysiol 105: 1416–1421, 2011. First published January 12, 2011; doi:10.1152/jn.00790.2010.—Increasing demand exists for smaller multichannel electrodes that enable simultaneous recordings of many neurons in a noninvasive manner. We report a novel method for manufactu...

2ECoG provides a way for real time monitoring of brain activity. However, it is still a challenge to characterize the features of ECoG after the onset of stroke. In this study, ECoG signals were collected through implanted electrodes at four different sites on the sensorimotor cortex during middle cerebral artery (MCA) occlusion. It was found that within 3 minutes after MCA occlusion, amplitude...

We have studied the resistance of single-wall carbon nanotubes measured in a four-point configuration with noninvasive voltage electrodes. The voltage drop is detected using multiwalled carbon nanotubes while the current is injected through nanofabricated Au electrodes. The resistance at room temperature is shown to be linear with the length as expected for a classical resistor. This changes at...

Planar electrochemical microcells were micromachined in a microcrystalline boron-doped diamond (BDD) thin layer using a femtosecond laser. The electrochemical performances of the new laser-machined BDD microcell were assessed by differential pulse anodic stripping voltammetry (DPASV) determinations, at the nanomolar level, of the four heavy metal ions of the European Water Framework Directive (...

diseases, and of the most recent methods in diagnosis and treatment. The book includes also " the gastro-intestinal clinic," in which all such diseases are separately considered. The contents are divided up into four sections, containing 82 chapters, and interspersed with 112 illustrations. Part I. is made up of three lectures giving the anatomic, physiologic, clinic, and diagnostic data. Part ...

Qualitative defects and resistances in 94 used gold foil electrodes were examined. The electrodes were divided into four groups of varying resistances and gold coating defects. Ten were randomly selected from each group to measure standard photopic electroretinograms (ERGs) in a normal subject. Ten new electrodes were used as controls. There was no significant difference among the electrode gro...

PURPOSE To explore the safety and efficacy of irreversible electroporation ablation in unresectable fibrous sarcoma with 2 electrodes. METHODS A 74-year-old woman with unresectable retroperitoneal malignant fibrous sarcoma was treated with percutaneous irreversible electroporation. Four ablations were performed on the mass, which measured 7.3 × 7.0 × 7.5 cm, with 2 electrodes. RESULTS A con...

To maintain the optimum collision condition of the two rings, two special BPMs with 8-button electrodes, called OCTPOS, were installed inside the super-conducting quadrupole magnets (QCSs) at the interaction region (IR) of KEKB. Four normal BPMs with 4-button electrodes were incorporated outside the QCSs. We have commissioned the OCTPOS BPMs for simultaneous measurements of both the electron an...