Image by Getty / FuturismScientists looked into the efficacy of an app that claims to help people lucid dream — and found it was a runaway success.Published in the journal Consciousness and Cognition, this study out of Northwestern University seems to demonstrate that so-called “Targeted Lucidity Reactivation” (TLR) can help people remember their dreams, and even propel them into a fascinating dive into the subconscious.The app involves training people to associate a specific sound, such as a tone or melody, with the awareness of dreaming. That sound is then played while subjects…