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Wednesday 07 October 2015, 10:15-11:00
Decoding of complex stimuli from large retinal populations
- 👤 Speaker: Vicente Botella-Soler
- 📅 Date & Time: Wednesday 07 October 2015, 10:15 - 11:00
- 📍 Venue: Cambridge University Engineering Department, CBL, BE-438 (http://learning.eng.cam.ac.uk/Public/Directions)
Abstract
Decoding of complex stimuli from the retinal activity remains an open challenge. To date, experiments have focused on decoding either a small number of discrete stimuli (e.g. decoding among several possible orientations of a drifting grating), or very low dimensional dynamical traces (e.g. luminance in a full field flicker experiment). In collaboration with experimentalists (group of O. Marre at the Vision Institute, Paris), we have implemented different frameworks for the decoding of rich dynamical stimuli at high level of spatial detail from the population activity of a rat’s retina. Linear decoding frameworks achieve good decoding performance. Furthermore, we show that, in some instances, methods taking advantage of nonlinear features of the population activity can decode significantly better than linear. Therefore, our work on decoding complements encoding studies to provide novel and practical insights into the organization of the neural code.
Series This talk is part of the Computational Neuroscience series.
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