Outline two mechanisms by which the flow of information between two neurons in adults can increase.
BIO 20B WEEK 6 LECTURE 10 NOTES Action Potential & Muscular System TEST YOURSELF 1 What is the relationship between a graded potential and an action potential 2 What is the threshold 3 Why is an action potential all or none - can you explain in terms of what is happening to the voltage gate channels 4 An action potential is an example of a positive feedback loop - can you explain why THE CHANGE IS PROPAGATED DOWN THE NEURON IN A FAST, SELF-PROPAGATING WAY Hyperpolarization (undershoot phase) = refractory period During this period Na+ inactivation gates remain closed This period is known as the absolute refractory period o Because another action potential cannot fire o Sets the maximum rate at which a neuron can fire
