Electric Conductivity

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  Subject Areas on Research

  • 16-Channel biphasic current-mode programmable charge balanced neural stimulation. 
  • A CNS catecholaminergic cell line expresses voltage-gated currents. 
  • A comparison using tissue electrical properties and temperature rise to determine relative absorption of microwave power in malignant tissue. 
  • A computer model of engineered cardiac monolayers. 
  • A critique of impedance measurements in cardiac tissue. 
  • A low-cost, scalable, current-sensing digital headstage for high channel count μECoG. 
  • A membrane model of electrically remodelled atrial myocardium derived from in vivo measurements. 
  • A new algorithm for idealizing single ion channel data containing multiple unknown conductance levels. 
  • A novel potassium channel with delayed rectifier properties isolated from rat brain by expression cloning. 
  • A synthetic lecithin containing branched-chain fatty acids: physical properties and membrane studies. 
  • ATP-sensitive K+ channels in a plasma membrane H+-ATPase mutant of the yeast Saccharomyces cerevisiae. 
  • Activation of swelling-activated chloride current by tumor necrosis factor-alpha requires ClC-3-dependent endosomal reactive oxygen production. 
  • Alpha-receptor mediated inhibition of A2 noradrenergic neurons. 
  • Alternative splicing of an insect sodium channel gene generates pharmacologically distinct sodium channels. 
  • An acoustofluidic micromixer based on oscillating sidewall sharp-edges. 
  • An integrative model of mouse cardiac electrophysiology from cell to torso. 
  • An upper limit for the electrogenic Na-K pump contribution to maximum diastolic potential in feline cardiac Purkinje fibers in steady state. 
  • Analysis of the quasi-static approximation for calculating potentials generated by neural stimulation. 
  • Anatomical variability predicts individual differences in transcranial electric stimulation motor threshold. 
  • Antiarrhythmic drug action. Blockade of the inward sodium current. 
  • Aquatic biofouling prevention by electrically charged nanocomposite polymer thin film membranes. 
  • Assessing Possible Mechanisms of Micrometer-Scale Electron Transfer in Heme-Free Geobacter sulfurreducens Pili. 
  • Augmented tissue oxygen supply during striated muscle contraction in the hamster. Relative contributions of capillary recruitment, functional dilation, and reduced tissue PO2. 
  • Barbiturate effects on acetylcholine-activated channels in Aplysia neurons. 
  • Barbiturate-induced slow outward currents in Aplysia neurones. 
  • Beta-adrenergic inhibition of cardiac sodium channels by dual G-protein pathways. 
  • Bipolar stimulation of a three-dimensional bidomain incorporating rotational anisotropy. 
  • Blockade of cardiac sodium channels. Competition between the permeant ion and antiarrhythmic drugs. 
  • Blockade of rabbit atrial sodium channels by lidocaine. Characterization of continuous and frequency-dependent blocking. 
  • Breaking the simple proportionality between molecular conductances and charge transfer rates. 
  • Calcium channel function regulated by the SH3-GK module in beta subunits. 
  • Calcium channels reconstituted from the skeletal muscle dihydropyridine receptor protein complex and its alpha 1 peptide subunit in lipid bilayers. 
  • Calcium influx and poststimulus current during early adaptation in Aplysia giant neurons. 
  • Calcium-dependent regulation of cholecystokinin secretion and potassium currents in STC-1 cells. 
  • Calmodulin regulation of excitation-contraction coupling in cardiac myocytes. 
  • Capacitive detection of glucose using molecularly imprinted polymers. 
  • Capsaicin activated currents in rat dorsal root ganglion cells. 
  • Capsaicin and nicotine both activate a subset of rat trigeminal ganglion neurons. 
  • Capsaicin-induced currents with distinct desensitization and Ca2+ dependence in rat trigeminal ganglion cells. 
  • Capsazepine, a vanilloid receptor antagonist, inhibits nicotinic acetylcholine receptors in rat trigeminal ganglia. 
  • Carbon nanotubes: measuring dispersion and length. 
  • Cardiac potential and potential gradient fields generated by single, combined, and sequential shocks during ventricular defibrillation. 
  • Cardiac transient outward potassium current: a pulse chemistry model of frequency-dependent properties. 
  • Charge splitters and charge transport junctions based on guanine quadruplexes. 
  • Chiral control of electron transmission through molecules. 
  • Colorful Conductive Threads for Wearable Electronics: Transparent Cu-Ag Nanonets. 
  • Conductive junctions with parallel graphene sheets. 
  • Corrosion behavior of Au and Ag modified Cu-Ni-Mn alloys. 
  • Cs+ loading reveals Na+-dependent persistent inward current and negative slope resistance region in Aplysia giant neurons. 
  • Cumulative impacts of mountaintop mining on an Appalachian watershed. 
  • Current density and electrically induced ventricular fibrillation. 
  • Current density and electrically induced ventricular fibrillation. 
  • Current density and electrically induced ventricular fibrillation. 
  • Current flow patterns in two-dimensional anisotropic bisyncytia with normal and extreme conductivities. 
  • Current saturation in submicrometer graphene transistors with thin gate dielectric: experiment, simulation, and theory. 
  • Cytoskeletal actin gates a Cl- channel in neocortical astrocytes. 
  • DNA nanotubes self-assembled from triple-crossover tiles as templates for conductive nanowires. 
  • DNA-Templated Self-Assembly of Protein Arrays and Highly Conductive Nanowires 
  • Defective potassium currents in ataxia telangiectasia fibroblasts. 
  • Dendritic analysis of lobster stretch receptor neurons: electrotonic properties with single and distributed inputs. 
  • Design and in vivo evaluation of more efficient and selective deep brain stimulation electrodes. 
  • Design of a superconducting volume coil for magnetic resonance microscopy of the mouse brain. 
  • Dielectrophoresis and electrorotation of neurospora slime and murine myeloma cells. 
  • Does reducing capacitance have potential for further miniaturisation of implantable defibrillators? 
  • Dynamically reconfigurable silicon array of spiking neurons with conductance-based synapses. 
  • Effect of conductivity interfaces in electrocardiography. 
  • Effect of conductivity interfaces. 
  • Effect of hydrostatic pressure gradients and Na2EDTA on permeability of human Schlemm's canal cell monolayers. 
  • Effect of junctional resistance on source-strength in a linear cable. 
  • Effect of nonuniform interstitial space properties on impulse propagation: a discrete multidomain model. 
  • Effect of oxygen at high pressure on spontaneous transmitter release. 
  • Effective boundary conditions for syncytial tissues. 
  • Effects of electroporation on transmembrane potential induced by defibrillation shocks. 
  • Effects of the Backbone and Chemical Linker on the Molecular Conductance of Nucleic Acid Duplexes. 
  • Efficient simulation of three-dimensional anisotropic cardiac tissue using an adaptive mesh refinement method. 
  • Electric field characteristics of electroconvulsive therapy with individualized current amplitude: a preclinical study. 
  • Electric field stimulation of excitable tissue. 
  • Electric fields around and within single cells during electroporation-a model study. 
  • Electrical characteristics of dendrites and dendritic spines in intracellularly stained CA3 and dentate hippocampal neurons. 
  • Electrical energy required to form large conducting pores. 
  • Electrical hazards and cardiovascular function. 
  • Electrical inhibition of lens epithelial cell proliferation: an additional factor in secondary cataract? 
  • Electrical properties of implant encapsulation tissue. 
  • Electrical safety standards for electrocardiographic apparatus. 
  • Electrically conductive "alkylated" graphene paper via chemical reduction of amine-functionalized graphene oxide paper. 
  • Electromagnetic spectroscopy of normal breast tissue specimens obtained from reduction surgeries: comparison of optical and microwave properties. 
  • Electron ratcheting in self-assembled soft matter. 
  • Electrophysiological interaction through the interstitial space between adjacent unmyelinated parallel fibers. 
  • Electrophysiological responses to non-electrolytes in lingual nerve of rat and in lingual epithelia of dog. 
  • Engineering biosynthetic excitable tissues from unexcitable cells for electrophysiological and cell therapy studies. 
  • Engineering nanometre-scale coherence in soft matter. 
  • Enhancement of transmission at the developing retinogeniculate synapse. 
  • Estimation of cardiac bidomain parameters from extracellular measurement: two dimensional study. 
  • Estimation of tissue resistivities from multiple-electrode impedance measurements. 
  • Evaluation of intradural stimulation efficiency and selectivity in a computational model of spinal cord stimulation. 
  • Evidence for a near-resonant charge transfer mechanism for double-stranded peptide nucleic acid. 
  • Expression of an abundant alternatively spliced form of the cystic fibrosis transmembrane conductance regulator (CFTR) gene is not associated with a cAMP-activated chloride conductance. 
  • Extracellular discontinuities in cardiac muscle: evidence for capillary effects on the action potential foot. 
  • Extracellular potentials related to intracellular action potentials during impulse conduction in anisotropic canine cardiac muscle. 
  • Fabrication and evaluation of conductive elastomer electrodes for neural stimulation. 
  • Fast and slow gating of sodium channels encoded by a single mRNA. 
  • Field stimulation of cardiac fibers with random spatial structure. 
  • GABA transporters regulate a standing GABAC receptor-mediated current at a retinal presynaptic terminal. 
  • GABAB-Receptor-mediated currents in interneurons of the dentate-hilus border. 
  • Gating currents from a delayed rectifier K+ channel with altered pore structure and function. 
  • Hapticity-dependent charge transport through carbodithioate-terminated [5,15-bis(phenylethynyl)porphinato]zinc(II) complexes in metal-molecule-metal junctions. 
  • High purity isolation and quantification of semiconducting carbon nanotubes via column chromatography. 
  • Homogenization of syncytial tissues. 
  • How spike generation mechanisms determine the neuronal response to fluctuating inputs. 
  • Hyposmotic activation of ICl,swell in rabbit nonpigmented ciliary epithelial cells involves increased ClC-3 trafficking to the plasma membrane. 
  • Hypoxia modulates nitric oxide-induced regulation of NMDA receptor currents and neuronal cell death. 
  • Identification of muscarinic acetylcholine receptors in isolated canine lingual epithelia via voltage clamp measurements. 
  • Importance of electrode conductive surface area and edge effects on ventricular defibrillation efficacy. 
  • Importance of voltage-dependent inactivation in N-type calcium channel regulation by G-proteins. 
  • In vitro and in vivo evaluation of a water-in-oil microemulsion system for enhanced peptide intestinal delivery. 
  • In vivo dielectric properties of human skin from 50 MHz to 2.0 GHz. 
  • Inactivation of the sodium current in squid giant axons by hydrocarbons. 
  • Influence of cholesterol on water penetration into bilayers. 
  • Influence of dynamic gap junction resistance on impulse propagation in ventricular myocardium: a computer simulation study. 
  • Influence of white matter conductivity anisotropy on electric field strength induced by electroconvulsive therapy. 
  • Interpretation of isopotential surface maps in patients with Ostium Primum and Secundum atrial defects. 
  • Interstitial potentials and their change with depth into cardiac tissue. 
  • Ionic influences on the phase transition of dipalmitoylphosphatidylserine. 
  • Lability of the prolonged depolarizing afterpotential in Balanus photoreceptors. 
  • Lambert-Eaton sera reduce low-voltage and high-voltage activated Ca2+ currents in murine dorsal root ganglion neurons. 
  • Letter to the Editor: on the electrocardiographic field equation. 
  • Lidocaine blockade of continuously and transiently accessible sites in cardiac sodium channels. 
  • Ligatin: a peripheral membrane protein with covalently bound palmitic acid. 
  • Little shocks. 
  • Long-term modulation of A-type K(+) conductances in hippocampal CA1 interneurons in rats after chronic intermittent ethanol exposure during adolescence or adulthood. 
  • Marked QRS complex abnormalities and sodium channel blockade by propoxyphene reversed with lidocaine. 
  • Measurement of in vivo corrosion rates in baboons, and correlation with in vitro tests. 
  • Mechanism of Side Chain-Controlled Proton Conductivity in Bioinspired Peptidic Nanostructures. 
  • Mechanisms of regulating the respiratory burst in leukocytes. 
  • Mechanisms of use-dependent block of sodium channels in excitable membranes by local anesthetics. 
  • Membrane properties underlying spontaneous activity of denervated muscle fibres. 
  • Microwave power absorption differences between normal and malignant tissue. 
  • Model of creation and evolution of stable electropores for DNA delivery. 
  • Modeling the effects of electric fields on nerve fibers: determination of excitation thresholds. 
  • Modeling transcranial electric stimulation in mouse: a high resolution finite element study. 
  • Modelling the periodicity of cardiac muscle. 
  • Modifications of the cardiac double-layer source arising from interstitial potentials. 
  • Modulating intraventricular conduction through competition of two class 1 antiarrhythmic agents: experience with ethacizin and lidocaine in canine heart. 
  • Molecular and cellular mechanisms of leukocyte chemotaxis. 
  • Morphometric and electrical properties of reconstructed hippocampal CA3 neurons recorded in vivo. 
  • Nature of light-induced conductance changes in ventral photoreceptors of Limulus. 
  • Negative resistance characteristic essential for the maintenance of slow oscillations in bursting neurons. 
  • Newly identified brain potassium channels gated by the guanine nucleotide binding protein Go. 
  • Nicotine inhibits voltage-dependent sodium channels and sensitizes vanilloid receptors. 
  • Novel anisotropic engineered cardiac tissues: studies of electrical propagation. 
  • On the structure of the hemocyanin channel in lipid bilayers. 
  • Optimizing single-molecule conductivity of conjugated organic oligomers with carbodithioate linkers. 
  • Patterns of excitation and inhibition evoked by horizontal connections in visual cortex share a common relationship to orientation columns. 
  • Periodic conductivity as a mechanism for cardiac stimulation and defibrillation. 
  • Persistence of prolonged light-induced conductance change in arthropod photoreceptors on recovery from anoxia. 
  • Piezo proteins are pore-forming subunits of mechanically activated channels. 
  • Potassium channels regulate cholecystokinin secretion in STC-1 cells. 
  • Potential and current distributions in a cylindrical bundle of cardiac tissue. 
  • Potential distribution in three-dimensional periodic myocardium--Part II: Application to extracellular stimulation. 
  • Primary contribution to zebrafish heart regeneration by gata4(+) cardiomyocytes. 
  • Prolonged inhibition in burst firing neurons: synaptic inactivation of the slow regenerative inward current. 
  • Propagation of excitation in idealized anisotropic two-dimensional tissue. 
  • Protein phosphatase-1 regulates outward K+ currents in sensory neurons of Aplysia californica. 
  • Purification of semiconducting carbon nanotubes. 
  • Quasi-ohmic single molecule charge transport through highly conjugated meso-to-meso ethyne-bridged porphyrin wires. 
  • Radium and barium removal through blending hydraulic fracturing fluids with acid mine drainage. 
  • Recent and innovative methods for detection of bacteremia and fungemia. 
  • Reception of microwaves by the brain. 
  • Reducing contact resistance in graphene devices through contact area patterning. 
  • Regional electric field induced by electroconvulsive therapy in a realistic finite element head model: influence of white matter anisotropic conductivity. 
  • Regional innervation of rabbit ciliary ganglion cells by the terminals of preganglionic axons. 
  • Regulation of synaptic connections in the rabbit ciliary ganglion. 
  • Repulsive interactions and mechanical stability of polymer-grafted lipid membranes. 
  • Response of a single cell to an external electric field. 
  • Rigid and flexible thin-film multielectrode arrays for transmural cardiac recording. 
  • Role of membrane curvature in mechanoelectrical transduction: ion carriers nonactin and valinomycin sense changes in integral bending energy. 
  • Selective microstimulation of central nervous system neurons. 
  • Simulating the electrical behavior of cardiac tissue using the bidomain model. 
  • Somatostatin augments the M-current in hippocampal neurons. 
  • Somatostatin immunohistochemistry of hippocampal slices with lucifer yellow-stained pyramidal neurons responding to somatostatin. 
  • Spike aftercurrents in R15 of Aplysia: their relationship to slow inward current and calcium influx. 
  • Steady state variables in the guarded receptor hypothesis. 
  • Steady-state electrotonic analysis of intracellularly stained hippocampal neurons. 
  • Stimulation strength and focality of electroconvulsive therapy and magnetic seizure therapy in a realistic head model. 
  • Synaptic cleft acidification and modulation of short-term depression by exocytosed protons in retinal bipolar cells. 
  • Synaptic mechanism of pentylenetetrazole: selectivity for chloride conductance. 
  • Synthesis and electrical characterization of silver nanobeams. 
  • Synthesis of oxidation-resistant cupronickel nanowires for transparent conducting nanowire networks. 
  • Targeted activation of c-Jun N-terminal kinase in vivo induces restrictive cardiomyopathy and conduction defects. 
  • Tetraethylammonium block of water flux in Aquaporin-1 channels expressed in kidney thin limbs of Henle's loop and a kidney-derived cell line. 
  • The dielectric constant of phospholipid bilayers and the permeability of membranes to ions. 
  • The effect of nanowire length and diameter on the properties of transparent, conducting nanowire films 
  • The electrical conductivity of phospholipid films as an iodine-sensing mechanism. 
  • The growth mechanism of copper nanowires and their properties in flexible, transparent conducting films. 
  • The ionic mechanism of the slow outward current in Aplysia neurons. 
  • The measured electrical properties of normal and malignant human tissues from 50 to 900 MHz. 
  • The organization of n-alkanes in lipid bilayers. 
  • The psychiatric use of electrically induced seizures. 
  • The role of ion fluxes in hematopoietic cell differentiation. 
  • The secretory granule matrix-electrolyte interface: a homologue of the p-n rectifying junction. 
  • The single-molecule conductance and electrochemical electron-transfer rate are related by a power law. 
  • The synthesis and coating of long, thin copper nanowires to make flexible, transparent conducting films on plastic substrates. 
  • Thermopower of molecular junctions: an ab initio study. 
  • Thin, lightweight, foldable thermochromic displays on paper. 
  • Three-dimensional finite element solution for biopotentials: erythrocyte in an applied field. 
  • Transfection of the CD20 cell surface molecule into ectopic cell types generates a Ca2+ conductance found constitutively in B lymphocytes. 
  • Two-dimensional analysis of ventricular fibrillation in the guinea pig. 
  • Unconventional serotonergic excitation in Aplysia. 
  • Variable conductivity and embolism in roots and branches of four contrasting tree species and their impacts on whole-plant hydraulic performance under future atmospheric CO₂ concentration. 
  • Voltage clamp discloses slow inward current in hippocampal burst-firing neurones. 
  • Voltage-induced long-range coherent electron transfer through organic molecules. 
  • Why do some patients have high defibrillation thresholds at defibrillator implantation? Answers from basic research. 
  • Yaw direction neurons in the cat inferior olive. 
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  Keywords of People

  • Baranger, Harold U., Professor of Physics, Physics
  • Henriquez, Craig S., Professor of Biomedical Engineering, Biomedical Engineering
  • Palmer, Gregory M., Associate Professor of Radiation Oncology, Radiation Oncology
  • Pitt, Geoffrey Stuart, Adjunct Professor in the Department of Medicine, Medicine, Cardiology