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        An inverse approach for elucidating dendritic function

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        907197.pdf (PDF, 2Mb)
        Author
        Torben-Nielsen, Ben
        Stiefel, Klaus M.
        Attention
        2299/16739
        Abstract
        We outline an inverse approach for investigating dendritic function-structure relationships by optimizing dendritic trees for a priori chosen computational functions. The inverse approach can be applied in two different ways. First, we can use it as a "hypothesis generator" in which we optimize dendrites for a function of general interest. The optimization yields an artificial dendrite that is subsequently compared to real neurons. This comparison potentially allows us to propose hypotheses about the function of real neurons. In this way, we investigated dendrites that optimally perform input-order detection. Second, we can use it as a "function confirmation" by optimizing dendrites for functions hypothesized to be performed by classes of neurons. If the optimized, artificial, dendrites resemble the dendrites of real neurons the artificial dendrites corroborate the hypothesized function of the real neuron. Moreover, properties of the artificial dendrites can lead to predictions about yet unmeasured properties. In this way, we investigated wide-field motion integration performed by the VS cells of the fly visual system. In outlining the inverse approach and two applications, we also elaborate on the nature of dendritic function. We furthermore discuss the role of optimality in assigning functions to dendrites and point out interesting future directions
        Publication date
        2010
        Published in
        Frontiers in Computational Neuroscience
        Published version
        https://doi.org/10.3389/fncom.2010.00128
        Other links
        http://hdl.handle.net/2299/16739
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