The minimal current necessary to elicit a threshold contraction of muscle is

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Prepare for the REMBE Electrotherapy Test. Study with flashcards and multiple choice questions. Each question comes with hints and explanations. Master electrotherapy concepts and get ready for your exam!

Multiple Choice

The minimal current necessary to elicit a threshold contraction of muscle is

Explanation:
Understanding the strength-duration relationship helps here. Rheobase is the smallest current amplitude that can elicit a muscle contraction when the stimulus duration is made very long. Chronaxie, on the other hand, is a time value—the pulse duration needed to evoke a response when the current is set to twice the rheobase. Since the question asks for the minimal current itself, the relevant concept is rheobase. That’s why rheobase is the best answer.

Understanding the strength-duration relationship helps here. Rheobase is the smallest current amplitude that can elicit a muscle contraction when the stimulus duration is made very long. Chronaxie, on the other hand, is a time value—the pulse duration needed to evoke a response when the current is set to twice the rheobase. Since the question asks for the minimal current itself, the relevant concept is rheobase. That’s why rheobase is the best answer.

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