From d9f7f74d72d6c3326b5a152ed01fc88eb7eb9e46 Mon Sep 17 00:00:00 2001 From: Jan Benda Date: Wed, 5 May 2021 11:49:14 +0200 Subject: [PATCH] [projects] updated lif and serial correlations --- projects/project_lif/lif.tex | 12 ++++-------- .../project_serialcorrelation/serialcorrelation.tex | 6 +++++- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/projects/project_lif/lif.tex b/projects/project_lif/lif.tex index f2d4bd8..82a036d 100644 --- a/projects/project_lif/lif.tex +++ b/projects/project_lif/lif.tex @@ -111,14 +111,10 @@ potentials $V_i$ for successive time points $t_i$ according to a sine wave $E(t)=A\sin(2\pi ft)$ with $A=2$\,mV and frequency $f=10$, 20, and 30\,Hz. - \part Compute the firing rate as a function of the frequency of - the stimulating sine wave ($A=2$\,mV and frequencies between 5 and - 30\,Hz). For a spike train with $n$ spikes at times $t_k$ ($k=1, - 2, \ldots n$) the firing rate is - \begin{equation} - \label{firingrate} - r = \frac{n-1}{t_n - t_1} - \end{equation} + \part Compute the firing rate (number of spikes per time) as a + function of the frequency of the stimulating sine wave ($A=2$\,mV + and frequencies between 5 and 30\,Hz). + What do you observe? Does the firing rate encode the frequency of the stimulus? Look at the spike trains in response to the sine waves to figure out what is going on. diff --git a/projects/project_serialcorrelation/serialcorrelation.tex b/projects/project_serialcorrelation/serialcorrelation.tex index e0f19ac..1c839f8 100644 --- a/projects/project_serialcorrelation/serialcorrelation.tex +++ b/projects/project_serialcorrelation/serialcorrelation.tex @@ -29,7 +29,7 @@ and \texttt{spikes} is a cell array containing the spike times in seconds of recorded spontaneous activity for each of these cells. \begin{questions} - \question Baseline firing rates + \question Baseline firing properties \begin{parts} \part Load the data! How many cells are contained in the file? @@ -44,6 +44,10 @@ seconds of recorded spontaneous activity for each of these cells. \part Compute the firing rate of each cell, i.e. number of spikes per time. Illustrate the results by means of a histogram and/or box whisker plot. + + \part Compute interspike-interval histograms and the + coefficient-of-variation of the interspike intervals, $C_{ISI}$, + for each of the cells. \end{parts} \question Serial correlations