Are you able to remember what you forgot?

Scientists at UC Davis have used light to erase specific memories from mice. For years, scientists have theorised that it takes 2 parts of your brain (the cerebral cortex and the hippocampus) working in unison to retrieve episodic memories. Episodic memories are memories of specific places or events that have happened. Scientists used genetically modified mice for an experiment on memory. These mice shine florescent green in the dark, and their cells switch off if shined on by light. This allows scientists to locate the cells in the hippocampus and the cortex, and switch them off accordingly. It was found that mice were more likely to forget events if only one part of the brain (the hippocampus) was used to recall those events. When both parts of the brain were enabled, the events were recalled normally by the mice.  Because of this experiment, scientists have confirmed the theory that recalling memories requires the work of 2 parts or the brain.