问答题 There are several things worth noting about cognitive neuroscience that are also reflected in the articles in this special issue of Science. First LS the idea that distributed brain networks underlie complex behaviors. In the early days of the field, most neuroscientists focused on individual brain regions and their responses. The sensory domain was particularly captivating; one could, for example, appropriately talk about hyper-complex cells in the visual system that responded to comers or the existence of heart columns as the organizing basis for neuro-sensory input. It is becoming clear, however, that the processing of information that leads to complex behaviors such as learning and memory involves multiple brain regions that must operate in an interactive parallel.