Artículos de revistas
Grid cells on the ball
Fecha
2013-03Registro en:
Stella, Federico; Si, Bailu; Kropff, Emilio; Treves, Alessandro; Grid cells on the ball; Iop Publishing; Journal Of Statistical Mechanics: Theory And Experiment; 2013; 3-2013; 1-16
1742-5468
CONICET Digital
CONICET
Autor
Stella, Federico
Si, Bailu
Kropff, Emilio
Treves, Alessandro
Resumen
What sort of grid cells do we expect to see in rodents who have spent their developmental period inside a large spherical cage? Or, in a different experimental paradigm, toddling on a revolving ball, with virtual reality simulating a coherently revolving surround? We consider a simple model of grid firing map formation, based on firing rate adaptation, that we have earlier analyzed when playing out on a flat environment. The model predicts that whether experienced on the outside or inside, a spherical environment induces one of a succession of grid maps realized as combinations of spherical harmonics, depending on the relation of the radius to the preferred grid spacing, itself related to the parameters of firing rate adaptation. Numerical simulations concur with analytical predictions.