The burgeoning field of brain mapping

This week scientists published the highest-resolution map yet of one small piece of the brain, a tissue sample one cubic millimeter in size. The resulting data set comprised 1,400 terabytes. This map is just one of many that have been in the news in recent years. So this week I thought we could walk through some of the ways researchers make these maps and how they hope to use them. Scientists have been trying to map the brain for as long as they've been studying it.