How Does a Voltage Clamp Work

question 17

Multiple Choice

How does a voltage clamp work?

• A) It measures the voltage of a neuron that is placed in the preparation.
• B) It changes the membrane potential of a neuron using two extracellular electrodes.
• C) It holds the current across a neuronal membrane constant and measures the changes in voltage.
• D) It holds the voltage of a neuron constant by injecting current equal to the ionic current passing across the cell membrane.
• E) It inactivates ion channels so that the only current passing into the cell is delivered by the equipment.

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