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October, 2006
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Membrane Potentials: The voltage differences across a membrane. For cellular membranes they are computed by subtracting the voltage measured outside the membrane from the voltage measured inside the membrane. They result from differences of inside versus outside concentration of potassium, sodium, chloride, and other ions across cells' or Organelles membranes. For excitable cells, the resting membrane potentials range between -30 and -100 millivolts. Physical, chemical, or electrical stimuli can make a membrane potential more negative (hyperpolarization), or less negative (depolarization).
 JoVE Neuroscience

Imaging Membrane Potential with Two Types of Genetically Encoded Fluorescent Voltage Sensors

1Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University, 2Center for Functional Connectomics, Korea Institute of Science and Technology, 3College of Life Sciences and Biotechnology, Korea University, 4Advanced Institutes of Convergence Technology

JoVE 53566

 JoVE Biology

Reconstitution of a Transmembrane Protein, the Voltage-gated Ion Channel, KvAP, into Giant Unilamellar Vesicles for Microscopy and Patch Clamp Studies

1Institut Curie, Centre de Recherche, CNRS, UMR 168, PhysicoChimie Curie, Université Pierre et Marie Curie, 2Kavli Institute for Brain and Mind, University of California, San Diego, 3Molecular Physiology and Biophysics Section, National Institute for Neurological Disorders and Stroke, National Institute of Health

JoVE 52281

 JoVE Biology

Measurement of Extracellular Ion Fluxes Using the Ion-selective Self-referencing Microelectrode Technique

1Department of Dermatology, Institute for Regenerative Cures, University of California, Davis, 2Departamento de Biologia, Centro de Biologia Molecular e Ambiental, Universidade do Minho, 3Department of Neurology and Center for Neuroscience, University of California, Davis Imaging of Dementia and Aging Laboratory, 4Department of Ophthalmology, Institute for Regenerative Cures, University of California, Davis

JoVE 52782

 JoVE Neuroscience

The Neuromuscular Junction: Measuring Synapse Size, Fragmentation and Changes in Synaptic Protein Density Using Confocal Fluorescence Microscopy

1Physiology and Bosch Institute, University of Sydney, 2Motor Neuron Disease Research Group, Australian School of Advanced Medicine, Macquarie University, 3Advanced Microscopy Facility, Bosch Institute, University of Sydney

JoVE 52220

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