[projects] fixed noiseficurves

projects/project_populationvector/populationvector.tex

@@ -2,22 +2,22 @@
 
 \newcommand{\ptitle}{Orientation tuning}
 \input{../header.tex}
-\firstpagefooter{Supervisor: Jan Benda}{phone: 29 74573}%
+\firstpagefooter{Supervisor: Jan Benda}{}%
 {email: jan.benda@uni-tuebingen.de}
 
 \begin{document}
 
 \input{../instructions.tex}
 
-%%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
+In the visual cortex V1 orientation sensitive neurons respond to bars
+in dependence on their orientation. In this project we explore the
+question:
+
+How is the orientation of a bar encoded by the activity of a
+population of orientation sensitive neurons?
+
 \begin{questions}
-
-  \question In the visual cortex V1 orientation sensitive neurons
-  respond to bars in dependence on their orientation. In this project
-  we explore the question:
-
-  How is the orientation of a bar encoded by the activity of a
-  population of orientation sensitive neurons?
+  \question Orientation tuning of the neurons
 
   In an electrophysiological experiment, 6 neurons have been recorded
   simultaneously. First, the tuning of these neurons was characterized
@@ -30,13 +30,6 @@
   times are given in seconds. The stimulation with the bar starts a
   time $t_0=0$ and ends at time $t_1=200$\,ms.
 
-  Then the population activity of the 6 neurons was measured in
-  response to arbitrarily oriented bars. The responses of the 6
-  neurons to 50 presentation of a bar are stored in the
-  \texttt{spikes} variables of the \texttt{population*.mat} files.
-  The \texttt{angle} variable holds the angle of the presented bar.
-
-\continue
   \begin{parts}
     \part Illustrate the spiking activity of the V1 cells in response
     to different orientation angles of the bars by means of spike
@@ -56,7 +49,17 @@
     modulation depth of the firing rate, and $a$ is an offset.
 
     Why is there a factor two in the argument of the cosine?
+  \end{parts}
 
+  \question Inferring stimulus orientation from neural activity  
+
+  In the second part of the experiment the population activity of the
+  6 neurons was measured in response to arbitrarily oriented bars. The
+  responses of the 6 neurons to 50 presentation of a bar are stored in
+  the \texttt{spikes} variables of the \texttt{population*.mat} files.
+  The \texttt{angle} variable holds the angle of the presented bar.
+
+  \begin{parts}
     \part How can the orientation angle of the presented bar be read
     out from one trial of the population activity of the 6 neurons?
     One possible method is the so called ``population vector'' where