--Original published at Jill Distler's Psychology Blog
Some memories are “stronger” than others, you remember them better than others. Why do I remember my second birthday party so well, but not my eighth? I believe that memories are day to day experiences that the brain takes in while we are awake, and then during the filtering process while we are asleep, they are officially saved in different “files” in the brain. But why are some more easily accessible than others? I feel that during the storage filtering process, dreams that are connected to increased hormone levels or larger changes in mood are ones that become easier to recall in the future. Memories connected to chemical reactions in the brain could be the reason why some appear “stronger” than others.
To test my theory of chemicals in the brain reacting to experiences during the day being the reason they become stronger memories after a night of sleep, I would first get a random sample of people using dating apps. The number of participants would obviously vary depending on how many people agreed to participate, but hopefully it would be an equal number of participants. In this study, two people would be paired and would be placed in a room together and forced to have a “typical” first date. We would monitor the levels of oxytocin in the brain while the two individuals spoke and got to know each other. After a few weeks, the individuals would be reintroduced to the original room to replicate the first date. Oxytocin levels would be monitored again, only a researcher would be present as a third party, initiating conversation based off of the previous date’s discussions. If the oxytocin levels spike during the reintroduction of the memories originally made on the first date, then it may prove that stronger memories are related to chemical reactions in the brain.