11 14 Question 16 (6 points) You perform an experiment in which you are artificially stimulating a neuron (whose electrical properties are described in Figure 7) and then record the intracellular membrane potential. You are going to apply five consecutive stimulations at a voltage of 30 mV each and you are going to decrease the time intervals between each stimulus and the next (Table 1). You perform two different trials (i. and ii.). 9 Table 1: pattern of stimulation stimulus 1 stimulus 2 stimulus voltage 30 mV 30 mV stimulus 3 30 mV stimulus 4 30 Mv stimulus 5 30 mV 4 21 12 time between stimuli 3 ms 2 ms 1 ms ms 15 21 17 18 21 20 21 23 12 26 27 I Membrane potential (m) Time (ms) Figure 7: graphical representation of an action potential in the test neuron Predict how many action potentials the neuron is going to produce if i. you apply the stimuli directly to the trigger zone. ii. you apply the stimuli to dendrites at a distance from the axon hillock, which results in each stimulus to decrease in voltage by 50% by the time they reach the trigger zone. For each trial, explain your answer.