Please only answer if you are an expert. Please answer the specific questions th
ID: 3519281 • Letter: P
Question
Please only answer if you are an expert. Please answer the specific questions that go together (numbering them would be helpful so I can interpret individually) . this is a question regarding neuro physiology. I have already found the definition (in Bold), however i am having a difficult time understanding/ answering the following questions. Thank you for your help
What is the definition of the time constant? What does the time constant tell you in terms of the electrical signal? Neurons are designed to minimize the time constant – why? What aspect of the neuron’s cable properties are manipulated to minimize the time constant? How are neurons modified (i.e. what is done to the structure of the neuron) to minimize the time constant?
Time constant definition: a parameter that characterizes the rate of decay of a change in the membrane potential.
Explanation / Answer
Time constant definition: a parameter that characterizes the rate of decay of a change in the membrane potential.
the time constant also determines the bandwidth of a first-order time-invariant system, that is, the frequency at which the output signal power drops to half the value it has at low frequencies.
neurons are designed to minimize the time contant because the larger a time constant is, the slower the rise or fall of the potential of a neuron, so it is important to minimize the time constant.
The resistance across the membrane is a function of the number of open ion channels and the capacitance is a function of the properties of the lipid bilayer.these factors of neuron cable are manipulated to minimize the time constant.
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