43 lines
1.3 KiB
TeX
43 lines
1.3 KiB
TeX
\documentclass[a4paper,12pt,pdftex]{exam}
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\newcommand{\ptitle}{Spectra}
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\input{../header.tex}
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\firstpagefooter{Supervisor: Jan Grewe}{phone: 29 74588}%
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{email: jan.grewe@uni-tuebingen.de}
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\begin{document}
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\input{../instructions.tex}
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%%%%%%%%%%%%%% Questions %%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{questions}
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\question The accompanying file contains ten stimulus and response
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sequences of a P-Unit of a weakly electric fish {\em Apteronotus
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leptorhynchus}. Another matrix contains the corresponding {\em
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electric organ discharge (EOD)} of the fish. The sampling rate is
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100kHz.
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\begin{parts}
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\part Split the data in non-overlapping 200ms windows and plot
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them in an appropriate way.
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\part Compute the autocorrelation of the spike response as well as
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the cross-correlation between stimulus and spike response.
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\part Determine the fundamental stimulus frequency and the EOD
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frequency using a Fourier transform.
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\part Convolve the spike responses (windows) with a Gaussian of
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appropriate size and compute the average Fourier amplitude
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spectrum of the spike response. Plot the result in an appropriate
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way.
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\part Determine whether you can find peak in the amplitude
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spectrum at the fundamental frequency of the EOD and/or the
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stimulus and/or their difference.
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\end{parts}
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\end{questions}
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\end{document}
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