What do inhibitory potentials do in terms of neuron firing?

What do inhibitory potentials do in terms of neuron firing?

• A. Make it easier for the neuron to fire
• B. Make it less likely to fire
• C. Increase the speed of firing
• D. Enhance synaptic transmission

Answer: (B)

Inhibitory potentials play a crucial role in regulating neuron firing by making it less likely for a neuron to reach the threshold necessary to trigger an action potential. When an inhibitory potential occurs, it typically results from the influx of negatively charged ions or the efflux of positive ions, leading to hyperpolarization of the neuron's membrane. This hyperpolarization means that the inside of the neuron becomes even more negative compared to the outside, which decreases the likelihood that the neuron will become depolarized to the level required for firing an action potential. As a result, inhibitory potentials serve as a critical mechanism in modulating the overall excitability of neural circuits, providing balance to excitatory inputs and helping to prevent the overactivity of neurons, which can lead to disorders such as seizures. This balancing effect is essential for proper functioning in the nervous system, where both excitatory and inhibitory signals must be finely tuned to maintain homeostasis and normal brain function.

Inhibitory potentials play a crucial role in regulating neuron firing by making it less likely for a neuron to reach the threshold necessary to trigger an action potential. When an inhibitory potential occurs, it typically results from the influx of negatively charged ions or the efflux of positive ions, leading to hyperpolarization of the neuron's membrane. This hyperpolarization means that the inside of the neuron becomes even more negative compared to the outside, which decreases the likelihood that the neuron will become depolarized to the level required for firing an action potential.

As a result, inhibitory potentials serve as a critical mechanism in modulating the overall excitability of neural circuits, providing balance to excitatory inputs and helping to prevent the overactivity of neurons, which can lead to disorders such as seizures. This balancing effect is essential for proper functioning in the nervous system, where both excitatory and inhibitory signals must be finely tuned to maintain homeostasis and normal brain function.