These films were allegedly made under controlled conditions for Soviet authorities and caused excitement for many psychic researchers around the world, some of whom believed that they represented clear evidence for the existence of psychic phenomena. According to reports from the Soviet Union, 40 scientists, two of whom were Nobel laureates, studied Kulagina.[6] In Investigating Psychics, Larry Kettlekamp claims that Mikhailova was filmed separating broken eggs that had been submerged in water, moving apart the whites and yolks, during which event such physical changes were recorded as accelerated and altered: heartbeat, brain waves and electromagnetic field.[7] To ensure that external electromagnetic impulses did not interfere, she was placed inside of a metal cage while she supposedly demonstrated an ability to remove a marked matchstick from a pile of matchsticks under a glass dome