MIT Scientists Successfully Control Rats’ Dreams
Posted by JacobSloan on September 5, 2012
Our dreamtime seems to be ripe for tinkering. Via io9:
Researchers working at MIT have successfully manipulated the content of a rat’s dream by replaying an audio cue that was associated with the previous day’s events, namely running through a maze (what else). The breakthrough furthers our understanding of how memory gets consolidated during sleep — but it also holds potential for the prospect of “dream engineering.”
Wilson and his team trained a group of rats to run through a maze using two distinct audio cues…and…recorded their neural activity. Later, while the rats were sleeping, the researchers once again recorded the neural activity of their brains [and] confirmed that the rats were dreaming of their maze navigating exploits from the day before.
But when the researchers played the audio cues from the experiment, they noticed a very interesting thing: the rats would dream about the section of the maze previously associated with the audio cue. The experiment demonstrated that the content of a rat’s dream can be biased by re-activating certain memories while they’re asleep.
The researchers believe that this simple example of dream engineering could open up the possibility of more extensive control of memory processing during sleep — and even the notion that selected memories could be either enhanced, blocked, or modified. Wilson is also aiming to develop new approaches to learning and behavioral therapy through similar kinds of cognitive manipulation.