GATE 2024 BM – Question 64
Motor nerve stimulation is 4 cm and 24 cm from the recording site. Corresponding distal and proximal latencies are 6 and 10 ms. Find conduction velocity in m/s, nearest integer.
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Correct answer: 50 to 50
Explanation
Subtract latencies to remove shared neuromuscular and recording delays. Distance difference is 24−4=20 cm=0.20 m; latency difference is 10−6=4 ms=0.004 s. Velocity is 0.20/0.004=50 m/s.