Imagine you know everything on Wikipedia, in the Oxford English Dictionary, and the contents of every book in digital form. When someone asks you what you did twenty years ago, on demand you recall with perfect accuracy every sensation and thought from that moment. Sifting and parsing all of this information is effortless and unconscious. Any fact, instant of time, skill, technique, or data point that you’ve experienced or can access on the internet is in your mind.
Cybernetic brains might make that possible. As computing power and storage continue to plod along their 18-month doubling cycle, there is no reason to believe we won’t at least have cybernetic sub-brains within the coming century. We already offload a tremendous amount of information and communication to our computers and smartphones. Why not make the process more integrated? Of course, what I’m engaging in right now is rampant speculation. But a neuro-computer interface is a possibility. More than that: cyber-brains may be necessary. Read More
Christopher Nolan’s Inception is a film about a time when we have the power to enter into each other’s dreams, and actively steer the dream’s course to implant an idea in the dreamer.
The film raises the issue of how much we understand about the neuroscience of dreams. Due to its need for invasive experiments, neuroscience typically works with non-human animals, which raises a significant difficulty: how do you know that a rat is dreaming? You can’t wake it up from REM sleep and ask. (Well, you can, but don’t expect a cogent response.) There’s no accepted objective indicator that a person or animal is having a dream, as opposed to sleeping. But, we can still learn something useful by looking at the neuroscience of sleep.