In this video I explain how an action potential is triggered in a neuron when it reaches its threshold. I explain the movement of ions, resting potential, and the all or none principle of neural firing. I also cover how the message is propagated along the axon and how myelin … Read More
Counting Cards, Sending Signals
This is an activity I created to illustrate the concepts of excitatory/inhibitory stimulation and triggering thresholds using a deck of playing cards. Students form groups of 5: of these 4 students will play the roles of dendrites and one student will be the axon hillock, summing the messages received from the … Read More