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[stim_reconstruction] slightly different explanaition of sta

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This commit is contained in:
Jan Grewe 2019-01-17 10:47:18 +01:00
parent 6971be657e
commit 751d977f37
3 changed files with 10 additions and 21 deletions
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1
projects/README
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@ -4,6 +4,7 @@ Add plotting of cost function
project_eod project_eod
OK, medium - difficult OK, medium - difficult
b_0 is not defined
project_eyetracker project_eyetracker
OK, difficult OK, difficult

15
projects/project_face_selectivity/auto/face_selectivity.el
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@ -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)

15
projects/project_stimulus_reconstruction/stimulus_reconstruction.tex
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@ -13,13 +13,16 @@
\section*{Reverse reconstruction of the stimulus that evoked a neuronal response.} \section*{Reverse reconstruction of the stimulus that evoked a neuronal response.}
To analyse encoding properties of a neuron one often calculates the To analyse encoding properties of a neuron one often calculates the
Spike-Triggered-Average (STA). The STA is the average stimulus that 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 led to a spike in the neuron:
form the stimulus centered on the respective spike time:
\[ STA(\tau) = \frac{1}{n} \displaystyle\sum_{i=1}^{n}{s(t_i - \tau)} \] \[ STA(\tau) = \frac{1}{n} \displaystyle\sum_{i=1}^{n}{s(t_i - \tau)} \]
where $n$ is the number of trials and $t_i$ is the time of the where $n$ is the number of spikes and $t_i$ is the time of the
$i_{th}$ spike. The Spike-Triggered-Average can be used to reconstruct $i_{th}$ spike. $\tau$ is a temporal shift relative to the spike
the stimulus from the neuronal response. The reconstructed stimulus time. For the beginning let $\tau$ assume values in the range
can then be compared to the original stimulus. $\pm50$\,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} \begin{questions}
\question In the accompanying data files you find the spike responses of \question In the accompanying data files you find the spike responses of