Topic: horizontal connections

Understanding how our brain integrates information across the visual space is crucial for understanding how visual information is encoded. In the supragranular and infragranular layers of the primary visual cortex (V1) of higher mammals, orientation-biased horizontal connections span several millimeters and connect neurons that encode different portions of the visual space [1], while connections in the granular layers remain local.We presented disks of varying radii and annuli of varying inner radii to anesthetized cats to investigate laminar differences in spatial integration of the stimuli i

The spontaneous activity in the primary visual cortex (V1) of higher mammals shows spatially modular events of higher activity, where co-active regions are correlated to the underlying structure - orientation maps [1]. This activity travels in sparse waves, in line with the propagation speed of unmyelinated lateral connections [2]. Currently there is a lack of understanding of how these phenomena interact with each other and with evoked activity – so far, they have been only studied experimentally [1,4] and computationally [5,2] in isolation.We present a single large-scale spiking model of cat