[exercise] translate psth exercise
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%%%%% text size %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\usepackage[left=20mm,right=20mm,top=25mm,bottom=25mm]{geometry}
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\pagestyle{headandfoot} \header{{\bfseries\large \"Ubung
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}}{{\bfseries\large Zeitabh\"angige Feuerrate}}{{\bfseries\large 13. Dezember, 2016}}
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\pagestyle{headandfoot} \header{{\bfseries\large Exercise
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}}{{\bfseries\large Time-dependent firing rate}}{{\bfseries\large December, 12, 2017}}
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\firstpagefooter{Dr. Jan Grewe}{Phone: 29 74588}{Email:
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jan.grewe@uni-tuebingen.de} \runningfooter{}{\thepage}{}
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@ -24,53 +24,54 @@
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\renewcommand{\baselinestretch}{1.15}
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\newcommand{\code}[1]{\texttt{#1}}
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\renewcommand{\solutiontitle}{\noindent\textbf{L\"osung:}\par\noindent}
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\renewcommand{\solutiontitle}{\noindent\textbf{Solution}\par\noindent}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{document}
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\vspace*{-6.5ex}
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\begin{center}
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\textbf{\Large Einf\"uhrung in die wissenschaftliche Datenverarbeitung}\\[1ex]
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\textbf{\Large Introduction to scientific computing.}\\[1ex]
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{\large Jan Grewe, Jan Benda}\\[-3ex]
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Abteilung Neuroethologie \hfill --- \hfill Institut f\"ur Neurobiologie \hfill --- \hfill \includegraphics[width=0.28\textwidth]{UT_WBMW_Black_RGB} \\
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\end{center}
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\begin{questions}
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\question Stelle die zeitabh\"angige Feuerrate eines Neurons
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dar. Diese soll auf Basis der instantanen Feuerrate (des
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Interspikeintervals) berechnet werden. Verwende dazu den Datensatz
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\code{lifoustim.mat}. Dieser enth\"at drei Variablen: 1. die
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Spikezeiten, 2. den Stimulus und 3. die zeitliche Aufl\"osung. Die
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Dauer eines Trials betr\"agt 30 Sekunden.
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\question Plot the time-dependent firing rate of a neuron. Calculate
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the firing rate from the instantaneous firing rate (based on the
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interspike interval). Use the \code{lifoustim.mat}. The dataset
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contains three variables. 1st the spike times in different trials,
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2nd the stimulus, and 3rd the temporal resolution. The total
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duration of each trial amounts to 30 seconds.
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\begin{parts}
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\part Schreibe eine Funktion, die einen Vektor mit Spikezeiten,
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die Dauer des Trials, und die zeitliche Aufl\"osung entgegennimmt
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und die Zeitachse sowie die Feuerrate zur\"uckgibt.
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\part Benutze diese Funktion in einem Skript und stellt die Feuerrate
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eines einzelnen Trials sowie den Mittelwert \"uber alle Trials
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dar.
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\part Erweitere das Programm so, dass die Abbildung den Richtlinien
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des \textit{Journal of Neuroscience} entspricht
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(Schriftgr\"o{\ss}e, Abbildungsgr\"o{\ss}e).
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\part Die Abbildung sollte als pdf gespeichert werden.
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\part{} Write a function that takes three arguments: the spike
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times of a single trial, the trial duration and the temporal
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resolution. The function should return the time values and the
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firing rate in $Hz$.
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\part{} Write a script that applies the above function to estimate
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the firing rate of each trial. Plot a single individual responses
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and the average response as a function of time into the same plot.
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\part{} Extend your program that it saves the figure in a format
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according to the rules given by the \textit{Journal of
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Neuroscience}. This relates to the figure size and the
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fontsizes.
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\part{} Store the figure in pdf format.
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\end{parts}
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\question Wie zuvor nur unter Verwendung der Binning Methode.
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\question{} As before but use the binning method.
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\question{} Extend your script that it also plots the interspike
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interval histogram and the distribution of spike counts into
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separate figures. Save the figures to file using the pdf format.
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\question Entscheide dich f\"ur eine Varainte und erweitere das
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entsprechende Skript, sodass auch die Interspikeintervallverteilung
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und die Verteilung der Spikecounts graphisch dargestellt werden. Die
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entsprechenden Abbildungen sollten als pdf gespeichert werden.
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\question Einige Trials sind anders als die \"Ubrigen. Benutze den
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Rasterplot um sie zu finden. Speichere die generierten Abbildungen.
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\question{} Some trials are different from the others.
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\begin{parts}
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\part Benutze den Rasterplot um sie zu finden. Worin unterscheiden sie sich von den anderen?
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\part Plotte die Verteilung der Spike counts.
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\part Filtere all die Trials heraus, deren Spikecount mehr als
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$2\sigma$ vom Mittelwert abweicht.
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\part Plotte die Feuerrate vor und nach dem Filtern.
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\part{} Use the rasterplot to identify them. In which sense
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are they different from the others? Save the rasterplot in pdf
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format.
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\part{} Identify those trial in which the total spike count
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deviates more than $2\sigma$ from the average.
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\end{parts}
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\end{questions}
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