Moderate

Neurons generally cannot fire at rates exceeding 100 impulses per second. This maximum firing rate can be largely attributed to ____________?

Correct answer: C. absolute refractory periods

  • A. spatial summation
  • B. relative refractory periods
  • C. absolute refractory periods
  • D. excitatory postsynaptic potentials

Explanation

The absolute refractory period briefly prevents a neuron from firing again immediately after an action potential, placing an upper limit on firing frequency. Relative refractory periods make firing harder but do not impose the same absolute limit.

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