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[projects] update of stimulus reconstruction assignment

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Jan Grewe 2014-11-02 14:16:14 +01:00
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projects/project_stimulus_reconstruction/stimulus_reconstruction.tex
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@ -32,11 +32,15 @@
%%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
\section*{Reverse reconstruction of the stimulus evoking neuronal responses.} \section*{Reverse reconstruction of the stimulus evoking neuronal responses.}
During the course we have used the Spike-Triggered-Average to During the course we have used the Spike-Triggered-Average to
reconstruct the stimulus reconstruct the stimulus a neuron has been stimulated with.
\begin{questions} \begin{questions}
\question . \question In the accompanying files you find the spike responses of
P-units and pyramidal neurons of the weakly electric fish
\textit{Apteronotus leptorhynchus}. The respective stimuli are
stored in separate files. Start with the P-unit and, in the end,
apply the same functions to the pyramidal data.
\begin{parts} \begin{parts}
\part Estimate the STA and plot it for each of the cells. \part Estimate the STA and plot it.
\part Implement a function that estimates the reconstruction \part Implement a function that estimates the reconstruction
error using the mean-square-error and express it relative to the error using the mean-square-error and express it relative to the
variance of the original stimulus. variance of the original stimulus.
@ -50,8 +54,7 @@ reconstruct the stimulus
error. error.
\part Plot the reconstruction error as a function of the data \part Plot the reconstruction error as a function of the data
amount used to estimate the STA. amount used to estimate the STA.
\part Apply the STA estimated for one neuron to reconstruct \part Do the same for the pyramidal neuron, what do you observe?
the stimulus another neuron has seen.
\end{parts} \end{parts}
\end{questions} \end{questions}