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Stimulus intensity is detected in the brain by:

Stimulus intensity is detected in the brain by:

  • (A) The number of actor potentials per second
  • (B) The threshold potential
  • (C) The amplitude of the action potential
  • (D) The number of synapses crossed
The correct option is (A) The number of actor potentials per second.
  • Frequency Coding: The nervous system shows the intensity of a stimulus with frequency coding. A stronger stimulus makes a neuron fire more often, leading to a higher number of action potentials per second.
  • All-or-None Law: Action potentials follow an "all-or-none" rule. Once the threshold is reached, the neuron sends a signal of a fixed size and duration. Since the size stays the same, the only way to indicate a "stronger" stimulus is to send more signals in a shorter time.
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 ‘NATO’ is an abbreviation of:

March 18, 2026 No Comments
  • (A) North Atlantic Treaty Organization
  • (B) Non-Aligned Treaty Organization
  • (C) Non-Aligned Trading Organization
  • (D) North American Transport Organization

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