Topic: cat V1

Motion is encoded by the visual system using multiple cues. In primary visual cortex (V1), one cue is the tracking of object edges in a direction perpendicular to their orientation. Another cue, called motion streak, relates to tracking fast objects that create a smeared perception of motion along their trajectory. Intriguingly, dual tuning, to both cues in the same neuron, occurs in mutually perpendicular directions. We aimed to determine if dual tuning is predicted by a neuron’s spatio-temporal receptive field (STRF). Drifting white noise (DWN) patterns were presented at range of speeds (0:1

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