Fabian projects done

projects/project_spectra/spectra.tex

@@ -32,7 +32,26 @@
 %%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
 
 \begin{questions}
-  \question What was the questions for 42?
+  \question The accompanying file contains ten stimulus and response
+  sequences of a P-Unit of a weakly electric fish {\em Apteronotus
+    leptorhynchus}. Another matrix contains the corresponding {\em
+    electric organ discharge (EOD)} of the fish. The sampling rate is
+  100kHz.
+  \begin{parts}
+    \part Split the data in non-overlapping 200ms windows and plot
+    them in an appropriate way. 
+    \part Compute the autocorrelation of the spike response as well as
+    the cross-correlation between stimulus and spike response. 
+    \part Determine the fundamental stimulus frequency and the EOD
+    frequency using a Fourier transform. 
+    \part Convolve the spike responses (windows) with a Gaussian of
+    appropriate size and compute the average Fourier amplitude
+    spectrum of the spike response. Plot the result in an appropriate
+    way. 
+    \part Determine whether you can find peas in the amplitude
+    spectrum at the fundamental frequency of the EOD and/or the
+    stimulus and/or their difference. 
+  \end{parts}
 \end{questions}