Graded Potentials Made Simple: EPSPs, IPSPs, and Summation

In this tutorial, Dr. Morton breaks down the concept of Graded Potentials. (for more information go to @TheNotedAnatomist.com) 0:00. Introduction. Graded potentials ... 0:37. ... originate in dendrites/cell body and summated in the axon hillock 3:06. ... are triggered by neurotransmitters and external stimuli 4:00. ... are small deviations from RMP that may be depolarizing or hyperpolarizing 6:14. ... amplitude is proportional to stimulus strength (graded response) 7:31. ... above threshold (axon hillock) open VgSC producing the AP down the axon 9:15. ... can be integrated both temporally and spatially 10:36. ... result in an Excitatory or Inhibitory Post-synaptic Potential (EPSP, IPSP) 12:28. In-a-Nutshell