Research Method

Measuring The Resting Potential

44.4 Measuring the Resting Potential The difference in electric charge across the plasma membrane of a neuron can be measured using two electrodes, one inside and one outside the cell. In an unstimulated neuron, this difference is constant (about -60 mV),and is known as the resting potential.

The constant difference of 60 mV between outside and inside is the resting potential.

44.4 Measuring the Resting Potential The difference in electric charge across the plasma membrane of a neuron can be measured using two electrodes, one inside and one outside the cell. In an unstimulated neuron, this difference is constant (about -60 mV),and is known as the resting potential.

The constant difference of 60 mV between outside and inside is the resting potential.

charges across the plasma membranes of neurons are sodium (Na+), chloride (Cl), potassium (K+), and calcium (Ca2+). It is also important to remember that ions with opposite charges attract one another, and those with like charges repel one another. With these basics of bioelectricity in mind, we can ask how the resting potential of the neuronal plasma membrane is created and how the flow of ions through membrane channels is turned on and off to generate action potentials.

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Responses

  • poppy
    What is potential difference?
    8 years ago

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