SangYoon Chung edited section_Implementing_Burst_Variance_Analysis__.tex  over 8 years ago

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The concept of BVA is to figure out whether the observed broadness of FRET distributions are owing to the molecular dynamics, by comparison of a calculated standard deviation ($s_E$) of FRET efficiencies for sub-bursts ,comprised of \textit{n} consecutive photons within the burst, from a mean FRET efficiency for a burst to an expected standard deviation based on shot noise limited distribution~\cite{Torella_2011}.   If the observed broadness originates from different molecules with static but different FRET efficiencies, $s_E$ of each burst is only affected by shot noise and will follow the expected standard deviation curve rationalized by a binomial distribution~ distribution (see  equation 4 in \cite{Torella_2011}. ~\cite{Torella_2011}).  However, if the observed broadness is due to dynamics of single biomolecules, $s_E$ of each burst has to be larger than the expected standard deviation and sits on above the expected standard deviation curve (see figure ).