Beatriz Carvalho Frota

Neurons in early visual cortex were believed to be spatially restricted analyzers of the visual world. However, in the past years, it became increasingly clear that a single neuron's response is critically influenced by stimuli presented outside the classical receptive field. Thus, it has been proven difficult to characterize the coding of complex stimuli at the level of single neurons. Using optical imaging techniques and multi-electrode recordings, we investigate cortical representations at the population level. The comprehensive spatial information gained with the imaging technique is complemented by the temporal precision of electrophysiological recordings from previously identified cortical sites of interest. In order to investigate the contribution of different cortico-cortical circuits to cortical representations we apply reversible deactivation and microstimulation techniques.