In 2002, a British study scanned the brains of ten “superior memorizers” — eight leading contenders in the World Memory Championships, and two individuals previously studied for their extraordinary memory accomplishments — all people that had demonstrated truly impressive feats of memory, in terms of the ability to quickly memorize hundreds of numbers or unrelated words. The ten “memory champions” were matched with ten controls, who had no memory capabilities out of the ordinary.
A number of brain regions were of course active in all tasks, for both groups. But there were differences between the two groups, both in terms of greater activity in some regions, and, more interestingly, in terms of the memory champs using brain regions not used by the controls*. Most particularly, regardless of task and regardless of performance, the memory champs engaged the left medial superior parietal gyrus, bilateral retrosplenial cortex, and right posterior hippocampus. These areas are all known to be involved in spatial memory and navigation.
memory champs using brain regions not used by the controls*
Those memory champions were the top memory althletes of the World Memory Championsips and only they used those brain regions
Left medial superior parietal gyrus- Involved in aspects of attention and visuospatial perception, including the representation and manipulation of objects. (Source-ScienceDirect).
Bilateral retrosplenial cortex- In humans, fMRI studies implicate the retrosplenial cortex in a wide range of cognitive functions including episodic memory , navigation, imagining future events and processing scenes more generally.(Source- Wikipedia)
Right posterior hippocampus - The precise functional role of the hippocampus remains a topic of much debate. The dominant view is that the dorsal (or posterior ) hippocampus is implicated in memory and spatial navigation(Source- Nature)
It is interesting to note that only superior memorizers used those brain regions,
How many of the about 7 functions you perform when training at least in your imagination when memorizing with or without your memory palaces-
Using episodic memory(Maybe the users of Memory Palaces or only Memory Champions use episodic memory when memorizing!)
navigation(Tip-Navigate your memory palace!)
imagining future events(Imprecise Tip-Use your imagination!)
processing scenes more generally
spatial navigation(Tip-Use your Spatial Memory!)
attention(Tip-Pay More Attention!)
visuospatial perception including the representation and manipulation of objects(Tip-Throw objects or perform crazy actions in your Mind Palace)
Note-If I find that some of the top memorizers do those things when memorizing and the rest of us do not then it may be possible for us normal people to have a way to become superior memorizers ourselves,
And credit to @ClimbforMemory (Nelson Dellis,4 times USA memory champion) because many of his tips are written here and also to Mempowered for parts of their article,
Have a Memorable Day.