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Let's say that you are recording the membrane potential at the soma, as shown in the following

Let's say that you are recording the membrane potential at the soma, as shown in the following

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Let's say that you are recording the membrane potential at the soma, as shown in the following figure: Neuron Neuron 2 Neuron Record . An action potential in each of the presynaptic neurons at time t = 0 produces a postsynaptic potential. The shape of such potentials is described in the following graph: -eani 67 Nen 2 Time (ms) Assume that spatial and temporal summation hold, that the threshold for firing is 55mV, and that a spike in a presynaptic neuron can be produced every 1ms. 1. It would take consecutive spikes in neuron 1 (every 1ms, starting at t = 0) to produce a spike in the postsynaptic neuron. 2. With spikes in neuron 2 at times t = 0, t = 2, and t = 4, a postsynaptic spike is produced around ms. 3. Imagine that there is an additional presynaptic neuron, neuron 4, that produces an EPSP exactly like that of neuron 1. Neurons 1, 3 and 4 fire an action potential at time t = 0. The membrane potential at time t-2ms would be around Membrane Potential (mv)
Transcribed Image Text:Let's say that you are recording the membrane potential at the soma, as shown in the following figure: Neuron Neuron 2 Neuron Record . An action potential in each of the presynaptic neurons at time t = 0 produces a postsynaptic potential. The shape of such potentials is described in the following graph: -eani 67 Nen 2 Time (ms) Assume that spatial and temporal summation hold, that the threshold for firing is 55mV, and that a spike in a presynaptic neuron can be produced every 1ms. 1. It would take consecutive spikes in neuron 1 (every 1ms, starting at t = 0) to produce a spike in the postsynaptic neuron. 2. With spikes in neuron 2 at times t = 0, t = 2, and t = 4, a postsynaptic spike is produced around ms. 3. Imagine that there is an additional presynaptic neuron, neuron 4, that produces an EPSP exactly like that of neuron 1. Neurons 1, 3 and 4 fire an action potential at time t = 0. The membrane potential at time t-2ms would be around Membrane Potential (mv)
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