Exceeding threshold depolarization at the trigger zone______the likelihood of generation of an action potential. increases
Action potential amplitude
decreases with distance
Increasing frequency of stimulation to the trigger zone
increases number of action potentials
Materials and Methods
Experiment 1: Effect of Stimulus Strength on Action Potential Generation Dependent Variable
stimulus strength (voltage)
frequency of stimulation, type of neuron
Experiment 2: Effect of Frequency of Stimulation on Action Potential Generation Dependent Variable
frequency of stimulation
stimulus strength (voltage), type of neuron
1. Which part of the neuron was stimulated?
2. Where was membrane potential measured?
3. What was used to measure membrane potential?
Table 3: Membrane Potentials at Different Stimulation Voltages, by Location. a. Values of maximal depolarization of membrane potential (mV) at different stimulation voltages, by location. Location
0 V (no stimulation )
b. Action Potential Generation.
Laboratory Report/ Caitlin Magnacca/ Action Potentials/ / 03.19.2015/ Page  of 
0 V (no
Graph 1. Maximal depolarization of membrane potential at axon hillock and axon after different stimulation voltages.
Resting membrane potential = -70 mV.
1. What was the resting membrane potential (no stimulation) recorded in...
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