![]() When the voltage surpasses the threshold, a spike occurs. To do this, we need to remember that the axes of both graph A and B represent voltage over time. This characteristic allows us to represent spikes in a binary fashion. How should we analyze the information encoded in these action potentials?Īs we’ve previously discussed, action potentials are an all-or-none event. Graph A shows the recorded stimulus and graph B shows the recorded actions potentials during the stimulus.Īssume that we measured a neuron firing in response to a random sensory stimulus (shown in Figure 6.3a), and we recorded its voltage changes and displayed the signal in an oscilloscope.
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