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What is the context of this research?

We developed novel methods to study how memories are processed during sleep. Human volunteers come to our lab in Evanston for these experiments. Our results and those from other labs support the conclusion that memory storage can be changed during sleep.



In these experiments, we link some learning with specific sounds that play during the course of learning. Then, people go to sleep while we record their brain activity with EEG electrodes. When slow-wave sleep is reached, we play selected sounds at a very low level, thus avoiding arousal from sleep. These sounds are processed by the brain and can promote memory reactivation. We have observed the results of this memory reactivation using various memory tests. Memory performance is systematically altered by the sounds we play during sleep.

What is the significance of this project?

Although past experiments show that memories can be strengthened during sleep, scientists have yet to examine whether memory storage can be corrupted during sleep. In order to develop a better understanding of memory and sleep, we need to find out whether this type of distortion is possible. Plus, it would be amazing if a sort of inception (as in the movie by that name) can actually be accomplished. Our new experiment examines this possibility in a very direct way, using an established method for creating false memories.



If you have any questions for us, feel free to send email to kap@northwestern.edu and we will be pleased to reply.

What are the goals of the project?

We will use the requested funding to bring this experiment to completion.

(1) Our efforts will include data collection, with the cooperation of people who come to the lab for memory testing and for a nap in exchange for a small payment.

(2) We will conduct extensive data analysis.

(3) We will then attempt to make sense of the findings and publish an article, to the extent that clear conclusions are possible.

(4) As part of the process of advancing the scientific understanding of memory and sleep, we also plan to present our results at a scientific conference.