Related Experiment Video

Updated: Jun 22, 2026

Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises
16:16

Membrane Potentials, Synaptic Responses, Neuronal Circuitry, Neuromodulation and Muscle Histology Using the Crayfish: Student Laboratory Exercises

Published on: January 18, 2011

Membrane potential fluctuations in Chara australis: a characteristic signature of high external sodium

Sabah Al Khazaaly1, N Alan Walker, Mary Jane Beilby

  • 1Plant Membrane Biophysics Group, School of Physics, University of NSW, Sydney, NSW, 2052, Australia.

European Biophysics Journal : EBJ
|June 6, 2009
PubMed

More Related Videos

Microelectrode Impalement Method to Record Membrane Potential from a Cannulated Middle Cerebral Artery06:32

Microelectrode Impalement Method to Record Membrane Potential from a Cannulated Middle Cerebral Artery

Published on: July 2, 2019

Introduction to Solid Supported Membrane Based Electrophysiology19:56

Introduction to Solid Supported Membrane Based Electrophysiology

Published on: May 11, 2013

Related Concept Videos

Resting Membrane Potential01:24

Resting Membrane Potential

The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
The Inside of a Neuron is More Negative
The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...
Resting Membrane Potential01:24

Resting Membrane Potential

The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
The Inside of a Neuron is More Negative
The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...
The Resting Membrane Potential01:21

The Resting Membrane Potential

Overview
Resting Potential Decay01:15

Resting Potential Decay

The resting membrane potential of a neuron (-70mV) is sustained due to the selective ion permeability of the membrane. At the resting potential, the membrane is slightly permeable to ions like sodium (Na+) and chloride (Cl−) and highly permeable to potassium ions (K+). Differences in the ions' concentration inside the cell compared to the outside are maintained by membrane transport proteins like channels and pumps.
At rest, the K+ is the main ion that moves across the membrane through...
Potentiometry: Membrane Electrodes01:15

Potentiometry: Membrane Electrodes

Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
Action Potentials01:41

Action Potentials

Overview