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Poster communications

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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Submitted on : Sunday, November 19, 2017 - 1:35:48 PM
Last modification on : Saturday, June 25, 2022 - 11:28:03 PM
Long-term archiving on: : Tuesday, February 20, 2018 - 12:36:12 PM


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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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