Motion processing in the retina

Abstract : Introduction • The visual system uses motion anticipation to compensate the delays in retino-cortical transmission. • Recent experimental and modelling studies on simple stimuli (moving bars) ([1], [2]) show that a notable preprocessing of visual motion is made by the retina. • They emphasized the role of the gain control occurring at the level of bipolar and ganglion cells (RGCs), in anticipation and other motion features. • These studies feature independent RGCs while these are, in reality, connected (via amacrine cells). • We want to understand how non linear mechanisms (gain control, spike frequency adaptation and connectivity), act on the anticipation of complex shapes motion. • For this we have developed a retina simulator, PRANAS [3] emulating the retina spike response to a visual scene. • We have studied the pairwise correlations between ganglion cells, under the influence of a moving object both, in vivo and in silico.
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Soumis le : dimanche 19 novembre 2017 - 13:35:48
Dernière modification le : jeudi 11 janvier 2018 - 16:36:02
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  • HAL Id : hal-01638105, version 1


Selma Souihel, Bruno Cessac. Motion processing in the retina. GDR multielectrodes , Nov 2017, Strasbourg, France. 〈hal-01638105〉



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