Question

How do neurons code for a greater response?

1) Increased frequency of stimuli
2) More active Na⁺/K⁺ pump
3) Greater Na⁺ concentration gradient
4) Greater amplitude of stimuli

Answer 1

Option 2 is correct option. To code for a greater response, neurons rely on an increased frequency and greater amplitude of stimuli, which more readily triggers action potentials.

Step-by-step explanation:

Neurons code for a greater response primarily through an increased frequency of stimuli and greater amplitude of stimuli. When there is a higher frequency of neuronal firing, it signifies a stronger stimulus. Similarly, a greater amplitude of stimuli means the incoming signal is strong enough to depolarize the neuron above the threshold more quickly, triggering action potentials more readily.

The Na+/K+ pump works to restore the resting membrane potential after an action potential, not to code for a greater response directly. A greater Na+ concentration gradient established by the Na+/K+ pump can facilitate the generation of action potentials, yet the gradient itself does not increase the coding for a greater response.