During electrical stimulation, which electrode is the cathode?

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Multiple Choice

During electrical stimulation, which electrode is the cathode?

Explanation:
The key idea is polarity in electrical stimulation: the cathode is the negative electrode. In stimulation, the electrode that carries negative charge is the cathode, and that site tends to depolarize nearby nerve membranes, producing an excitatory response when the stimulus is applied. The opposite electrode is the anode (positive), which has different effects on tissue excitability. Ground or reference electrodes serve other roles in the setup and are not defined as the cathode.

The key idea is polarity in electrical stimulation: the cathode is the negative electrode. In stimulation, the electrode that carries negative charge is the cathode, and that site tends to depolarize nearby nerve membranes, producing an excitatory response when the stimulus is applied. The opposite electrode is the anode (positive), which has different effects on tissue excitability. Ground or reference electrodes serve other roles in the setup and are not defined as the cathode.

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