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jBillou edited Estimating phases from signal.tex
over 9 years ago
Commit id: 09a2926b0ff1b8e076c51775dcb0dd1f235f9e73
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diff --git a/Estimating phases from signal.tex b/Estimating phases from signal.tex
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For the circadian clock.
\begin{align*}
\textrm{d}\theta_t
&= =& \frac{2\pi}{T_1}\textrm{d}t + \sigma_{\theta}\textrm{d}W_t\\
\textrm{d}\lambda_t
&= =& -\gamma_{\lambda} (\lambda_t-\mu_{\lambda}) \textrm{d}t + \sigma_{\lambda}\textrm{d}W_t\\
\textrm{d}B_t
&= =& -\gamma_B (B_t-\mu_B) \textrm{d}t + \sigma_{B} \textrm{d}W_t\\
\end{align*}
The model links the observed circadian signal $s_t$ to the circadian phase $\theta_t$ through a waveform $w(\theta)$, an amplitude $\exp(\lambda_t)$ and a baseline $B_t$: