According to a Normal Strength Duration (SD) Curve, What Would $\mu$

question 2

Multiple Choice

According to a normal strength duration (SD) curve, what would be the first sensation that a patient would perceive as the intensity was slowly increased and if the pulse duration of the stimulator was set at 250 $\mu$ sec (250 microseconds) ?

• A)Pain
• B)A muscle twitch or contraction
• C)An achy sensation
• D)Pins and needles or tingling

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