From 751d977f37969ab3cdcd0cfbc41bb0badf76cbdc Mon Sep 17 00:00:00 2001
From: Jan Grewe <jan.grewe@g-node.org>
Date: Thu, 17 Jan 2019 10:47:18 +0100
Subject: [PATCH] [stim_reconstruction] slightly different explanaition of sta

---
 projects/README                                   |  1 +
 .../auto/face_selectivity.el                      | 15 ---------------
 .../stimulus_reconstruction.tex                   | 15 +++++++++------
 3 files changed, 10 insertions(+), 21 deletions(-)
 delete mode 100644 projects/project_face_selectivity/auto/face_selectivity.el

diff --git a/projects/README b/projects/README
index c8d8b7c..2ac849d 100644
--- a/projects/README
+++ b/projects/README
@@ -4,6 +4,7 @@ Add plotting of cost function
 
 project_eod
 OK, medium - difficult
+b_0 is not defined
 
 project_eyetracker
 OK, difficult
diff --git a/projects/project_face_selectivity/auto/face_selectivity.el b/projects/project_face_selectivity/auto/face_selectivity.el
deleted file mode 100644
index 0e5be37..0000000
--- a/projects/project_face_selectivity/auto/face_selectivity.el
+++ /dev/null
@@ -1,15 +0,0 @@
-(TeX-add-style-hook
- "face_selectivity"
- (lambda ()
-   (TeX-add-to-alist 'LaTeX-provided-class-options
-                     '(("exam" "a4paper" "12pt" "pdftex")))
-   (TeX-run-style-hooks
-    "latex2e"
-    "../header"
-    "../instructions"
-    "exam"
-    "exam12")
-   (TeX-add-symbols
-    "ptitle"))
- :latex)
-
diff --git a/projects/project_stimulus_reconstruction/stimulus_reconstruction.tex b/projects/project_stimulus_reconstruction/stimulus_reconstruction.tex
index 54fe252..c2c45be 100644
--- a/projects/project_stimulus_reconstruction/stimulus_reconstruction.tex
+++ b/projects/project_stimulus_reconstruction/stimulus_reconstruction.tex
@@ -13,13 +13,16 @@
 \section*{Reverse reconstruction of the stimulus that evoked a neuronal response.}
 To analyse encoding properties of a neuron one often calculates the
 Spike-Triggered-Average (STA). The STA is the average stimulus that
-led to a spike in the neuron and is calculated by cutting out snippets
-form the stimulus centered on the respective spike time:
+led to a spike in the neuron:
 \[ STA(\tau) = \frac{1}{n} \displaystyle\sum_{i=1}^{n}{s(t_i - \tau)} \]
-where $n$ is the number of trials and $t_i$ is the time of the
-$i_{th}$ spike. The Spike-Triggered-Average can be used to reconstruct
-the stimulus from the neuronal response. The reconstructed stimulus
-can then be compared to the original stimulus.
+where $n$ is the number of spikes and $t_i$ is the time of the
+$i_{th}$ spike. $\tau$ is a temporal shift relative to the spike
+time. For the beginning let $\tau$ assume values in the range
+$\pm50$\,ms. It can be estimated by cutting out snippets form the
+stimulus centered on the respective spike time and averaging them. The
+Spike-Triggered-Average can be used to reconstruct the stimulus from
+the neuronal response. The reconstructed stimulus can then be compared
+to the original stimulus.
 
 \begin{questions}
   \question In the accompanying data files you find the spike responses of