UH Biocomputation Group - Pattern recognitionhttp://biocomputation.herts.ac.uk/2022-06-28T14:18:39+01:00Long-Term Depression and Recognition of Parallel Fibre Patterns in a Multi-Compartmental Model of a Cerebellar Purkinje Cell2022-06-28T14:18:39+01:002022-06-28T14:18:39+01:00Volker Steubertag:biocomputation.herts.ac.uk,2022-06-28:/2022/06/28/temporal-coding-and-rank-order-coding.html<p class="first last">Volker Steuber's Journal Club session where he will talk about temporal coding and, in particular, rank order coding. Please see the papers below for more details.</p>
<p>This week on Journal Club session Volker Steuber will talk about temporal coding and, in particular, rank order coding. Please see the papers below for more details.</p>
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<p>It has been suggested that long-term depression (LTD) of parallel fibre (PF)
synapses enables a cerebellar Purkinje cell (PC) to learn to recognise PF
activity patterns. We investigate the recognition of PF patterns that have been
stored by LTD of AMPA receptors in a multi- compartmental PC model with a
passive soma. We find that a corresponding artificial neural network
outperforms a PC model with active dendrites by an order of magnitude. Removal
of the dendritic ion channels leads to a further decrease in performance.
Another effect of the active dendrites is an afterhyperpolarization response to
novel PF patterns. Thus, the LTD based storage of PF patterns can lead to a
potentiated late PC response.</p>
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<p>Papers:</p>
<ul class="simple">
<li>B. Sabatini, W. Regehr, <a class="reference external" href="https://doi.org/10.1038/384170a0">"Timing of Neurotransmission at Fast Synapses in the Mammalian Brain"</a>, 1996, Nature, 384, 170--172</li>
<li>V. Steuber, E. De, Schutter, <a class="reference external" href="https://doi.org/10.1016/S0925-2312(01)00458-1">"Long-Term Depression and Recognition of Parallel Fibre Patterns in a Multi-Compartmental Model of a Cerebellar Purkinje Cell"</a>, 2001, Neurocomputing, 38--40, 383--388</li>
<li>S. Thorpe, D. Fize, C. Marlot, <a class="reference external" href="https://doi.org/10.1016/S0002-9394(14)72148-8">"Speed of Processing in the Human Visual System"</a>, 1996, American Journal of Ophthalmology, 381, 608--609</li>
<li>S. Thorpe, A. Delorme, R. Van, Rullen, <a class="reference external" href="https://doi.org/10.1016/S0893-6080(01)00083-1">"Spike-Based Strategies for Rapid Processing"</a>, 2001, Neural Networks, 14, 715--725</li>
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<p><strong>Date:</strong> 2022/07/01 <br />
<strong>Time:</strong> 14:00 <br />
<strong>Location</strong>: online</p>