[projects] photoreceptor project update, add Makefile

projects/project_photoreceptor/Makefile

@@ -0,0 +1,10 @@
+latex:
+	pdflatex *.tex > /dev/null
+	pdflatex *.tex > /dev/null
+
+clean:
+	rm -rf *.log *.aux *.zip *.out auto
+	rm -f `basename *.tex .tex`.pdf
+
+zip: latex
+	zip `basename *.tex .tex`.zip *.pdf *.dat *.mat

projects/project_photoreceptor/photoreceptor.tex

@@ -31,8 +31,9 @@
 %%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
 \section*{Analysis of insect photoreceptor data.}
 In this project you will analyse data from intracellular recordings of
-a fly photoreceptor. A R~1--6 photoreceptor was intracellularly
-recorded and was stimulated with a light stimulus.
+a fly R\.1--6 photoreceptor. The membrane potential of the
+photoreceptor was recorded while the cell was stimulated with a
+light stimulus.
 
 \begin{questions}
   \question{} The accompanying dataset (photoreceptor\_data.zip)
@@ -50,10 +51,12 @@ recorded and was stimulated with a light stimulus.
     a function of time. This plot should also show the
     across-trial variability.\\[0.5ex]
     \part{} You will notice that the responses have three main parts, a
-    pre-stimulus phase, the phase in which the light was on, and finally a
-    post-stimulus time. Create an characteristic curve that plots the
-    response strength as a function of the stimulus intensity for the ``onset''
-    and the ``steady state'' phases.\\[0.5ex] 
+    pre-stimulus phase, the phase in which the light was on, and
+    finally a post-stimulus phase. Create an characteristic curve that
+    plots the response strength as a function of the stimulus
+    intensity for the ``onset'' and the ``steady state''
+    phases.\\[0.5ex]
+    \part{} The light switches on at time zero. Estimate the delay between stimulus.\\[0.5ex]
     \part{} You may also decide to analyze the post-stimulus response in some
     more detail.
   \end{parts}