Question

The minimal current required to produce a response with infinite duration of stimulus is referred to as:

• A. Chronaxie
• B. Rheobase
• C. Van Hoff Point
• D. Lewis Stimulation Point
• E.

Hint:

Rheobase represents the threshold current needed for electrical stimulation of excitable tissues.

Answer 1

The Correct Option is B

Step 1: Understanding rheobase.
Rheobase is defined as the minimum current strength required to produce a response in excitable tissue when the stimulus is applied for an infinite duration. This value is crucial in understanding the excitability of nerve and muscle tissues.
Step 2: Chronaxie.
Chronaxie is related but distinct from rheobase. It refers to the minimum duration required for a stimulus of twice the rheobase strength to produce a response.
Step 3: Analyzing the other options.
- (3) Van Hoff Point: This term is not related to electrical stimulation; it's about the temperature dependence of chemical reactions.
- (4) Lewis Stimulation Point: This point does not refer to the threshold of electrical stimulation but is associated with a different phenomenon.
Step 4: Conclusion.
Therefore, the correct answer is (2) Rheobase, as it refers to the minimum stimulus current required for response at infinite duration.