IFLYSIB   05383
INSTITUTO DE FISICA DE LIQUIDOS Y SISTEMAS BIOLOGICOS
Unidad Ejecutora - UE
artículos
Título:
Effect of interacting second- and third-order stimulus-dependent correlations on population-coding asymmetries
Autor/es:
LISANDRO MONTANGIE; FERNANDO MONTANI
Revista:
PHYSICAL REVIEW E
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2016 vol. 94 p. 423031 - 4230315
ISSN:
1539-3755
Resumen:
Spike correlations among neurons are widely encountered in the brain. Although models accounting for pairwise interactions have proved able to capture some of the most important features of population activity at the level of the retina, the evidence shows that pairwise neuronal correlation analysis does not resolve cooperative population dynamics by itself. By means of a series expansion for short time scales of the mutual information conveyed by a population of neurons, the information transmission can be broken down into firing rate andcorrelational components. In a proposed extension of this framework, we investigate the information components considering both second- and higher-order correlations.We showthat the existence of a mixed stimulus-dependentcorrelation term defines a new scenario for the interplay between pairwise and higher-than-pairwise interactions in noise and signal correlations that would lead either to redundancy or synergy in the information-theoreticsense.