

.. _sphx_glr_examples_models:

.. _examples-models:

Model reproductions
===================

Figures from published models, recreated against the psychophysical data they
were fit to.


.. raw:: html

  <div id='sg-tag-list' class='sphx-glr-tag-list'></div>


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    <div class="sphx-glr-thumbnails">

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    <div class="sphx-glr-thumbcontainer" tooltip="The axon map model of [Beyeler2019]_ predicts one phosphene shape per electrode, regardless of the pulse train. [Granley2021]_ adds three scaling factors, fit to psychophysical and electrophysiological data: amplitude, frequency, and phase duration modulate brightness (F_\mathrm{bright}), spatial extent (F_\mathrm{size}, scaling \rho), and streak length (F_\mathrm{streak}, scaling \lambda).">

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  .. image:: /examples/models/images/thumb/sphx_glr_plot_granley2021_biphasic_thumb.png
    :alt:

  :doc:`/examples/models/plot_granley2021_biphasic`

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      <div class="sphx-glr-thumbnail-title">Granley et al. (2021): Pulse parameters shape phosphene appearance</div>
    </div>


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    <div class="sphx-glr-thumbcontainer" tooltip="Detection threshold depends on how charge is delivered in time. [Horsager2009]_ measured thresholds in Argus I users while varying pulse duration and pulse-train frequency, and fit a cascade of linear filters and a nonlinearity.">

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  .. image:: /examples/models/images/thumb/sphx_glr_plot_horsager2009_thumb.png
    :alt:

  :doc:`/examples/models/plot_horsager2009`

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      <div class="sphx-glr-thumbnail-title">Horsager et al. (2009): Temporal sensitivity of the epiretinal percept</div>
    </div>


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    <div class="sphx-glr-thumbcontainer" tooltip="[Nanduri2012]_ had Argus I users rate brightness and size while the amplitude or the frequency of a 0.45 ms cathodic-first pulse train was varied from a reference of 1.25x threshold at 20 Hz. Brightness saturated with amplitude but kept growing with frequency; size grew mainly with amplitude.">

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  .. image:: /examples/models/images/thumb/sphx_glr_plot_nanduri2012_thumb.png
    :alt:

  :doc:`/examples/models/plot_nanduri2012`

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      <div class="sphx-glr-thumbnail-title">Nanduri et al. (2012): Amplitude and frequency are not interchangeable</div>
    </div>


.. thumbnail-parent-div-close

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    </div>


.. toctree::
   :hidden:

   /examples/models/plot_granley2021_biphasic
   /examples/models/plot_horsager2009
   /examples/models/plot_nanduri2012

