According to the textbook focus on neuroscience box titled "the dreaming brain," a pet scan of a person's brain while he or she is in rem sleep would reveal activity in the frontal lobes and primary visual cortex, and activity in certain areas of the limbic system and in the brain areas involved in generating visual images.

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent