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nmdcat.online July 7, 2026

The condition required for temporal summation to occur at a synapse is the

A. Simultaneous firing of multiple presynaptic neurons
B. Rapid, successive firing of a single presynaptic neuron
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C. Release of both excitatory and inhibitory neurotransmitters
D. Opening of voltage-gated potassium channels

📝 Explanation

Temporal summation occurs when a single presynaptic neuron fires multiple times in rapid succession, allowing the resulting graded potentials to add together before the previous ones dissipate.

📖 Additional Information

  • Simultaneous firing of multiple presynaptic neurons
  • Rapid, successive firing of a single presynaptic neuron
  • Release of both excitatory and inhibitory neurotransmitters
  • Opening of voltage-gated potassium channels

Temporal summation occurs when a single presynaptic neuron fires multiple times in rapid succession, allowing the resulting graded potentials to add together before the previous ones dissipate.

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