Gonzalo G. de Polavieja

Feedback Network Controls Photoreceptor Output at the Layer of First Visual Synapses in Drosophila

Zheng, Lei, De Polavieja, Gonzalo G., Wolfram, Verena, Asyali, Musa H., Hardie, Roger C., Juusola, Mikko

At the layer of first visual synapses, information from photoreceptors is processed and transmitted towards the brain. In fly compound eye, output from photoreceptors (R1–R6) that share the same...

The Rate of Information Transfer of Naturalistic Stimulation by Graded Potentials

Juusola, Mikko, De Polavieja, Gonzalo G.

We present a method to measure the rate of information transfer for any continuous signals of finite duration without assumptions. After testing the method with simulated responses, we measure the...

Optimally wired subnetwork determines neuroanatomy of Caenorhabditis elegans

Pérez-Escudero, Alfonso, De Polavieja, Gonzalo G.

Wiring cost minimization has successfully explained many structures of nervous systems. However, in the nematode Caenorhabditis elegans, for which anatomical data are most detailed, wiring economy is...

Network Adaptation Improves Temporal Representation of Naturalistic Stimuli in Drosophila Eye: II Mechanisms

Nikolaev, Anton, Zheng, Lei, Wardill, Trevor J., O'Kane, Cahir J., De Polavieja, Gonzalo G., Juusola, Mikko

Retinal networks must adapt constantly to best present the ever changing visual world to the brain. Here we test the hypothesis that adaptation is a result of different mechanisms at several synaptic...

Network Adaptation Improves Temporal Representation of Naturalistic Stimuli in Drosophila Eye: I Dynamics

Zheng, Lei, Nikolaev, Anton, Wardill, Trevor J., O'Kane, Cahir J., De Polavieja, Gonzalo G., Juusola, Mikko

Because of the limited processing capacity of eyes, retinal networks must adapt constantly to best present the ever changing visual world to the brain. However, we still know little about how...

Structure of deviations from optimality in biological systems

Pérez-Escudero, Alfonso, Rivera-Alba, Marta, De Polavieja, Gonzalo G.

Optimization theory has been used to analyze evolutionary adaptation. This theory has explained many features of biological systems, from the genetic code to animal behavior. However, these systems...