Shot noise sets a ~10 mV fundamental limit on single ion-channel voltage sensing while Johnson-Nyquist noise bounds collective information at observed channel densities.
Let us define the following function: G := 2G0 qη+ 1 +η (1−κ 2η2) (q2η2 −1) (S3.29) Note thatωonly entersGthroughq
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Thermal fluctuations set fundamental limits on ion channel function
Shot noise sets a ~10 mV fundamental limit on single ion-channel voltage sensing while Johnson-Nyquist noise bounds collective information at observed channel densities.