Morphed images of celebrities such as Angelina Jolie, Halle Berry, Bob Marley, Sylvester Stallone, Uma Thurman, Nicole Kidman, Whoopi Goldberg, Bill Clinton and George Bush, and others were shown to participants in a recent study. The study found that neurons fire in line with conscious recognition of images rather than the actual images seen, thereby leading scientists to believe that neurons play a key role in the formation of memory.