Generating Images from the Brain

If this research is practical, it is remarkable, I did not even think the mapping of images in the brain was understood:

" ... In a world first, a research group in Kyoto Prefecture has succeeded in processing and displaying optically received images directly from the human brain. The group of researchers at Advanced Telecommunications Research Institute International, including Yukiyasu Kamitani and Yoichi Miyawaki, from its NeuroInformatics Department, said about 100 million images can be read, adding that dreams as well as mental images are likely to be visualized in the future in the same manner... "