Thalamocortical circuits for the formation of hierarchical pathways in the mammalian visual cortex.

Abstract in brief

• The article discusses the development of hierarchical visual pathways in the mammalian brain, emphasizing how sensory inputs from lower to higher brain areas are organized during development, with a focus on the roles of thalamic nuclei and spontaneous retinal activity.
• Key areas of investigation include understanding how connections between brain regions are formed anatomically, as well as the molecular and activity-dependent mechanisms that guide these processes, especially in higher-order thalamic nuclei.
• The review highlights the significance of spontaneous retinal activity propagating through thalamocortical circuits, suggesting it is crucial for establishing cortical connections and the functional maturation of visual features processed in parallel pathways.