This could help.
It grows those interconnections.
But for pure Digit Span ability, look into the Brain Growth Work Field:
New Release - Brain Growth Work
^
This is the lynchpin of all memory span abilities.
NFT wise
I would recommend the following:
Negen-Lingual NFT - (Ultimate Cerebral Project) Testimony
^ This was specifically designed to help with things like Digit Span.
And it’s interconnections to language ability etc.
You can check the Buying thread see if someone is selling.
Project TRP - Total Recall Protocol (Private)
- Includes Negenlingual and much more.
Glad to see you bring up this exercise, the test of Digit Span is my favorite.
You need to get that Prefrontal lobe enhancement, specifically the DLPFC and the VLPFC ( I prefer DLPFC)
TDCS devices I have also stimulate this area, so you can try a TDCS field when working on the task.
But Brain growth covers this and more.
Heck you can even give Synesthesia a shot.
It might be even better this way, from what I read Synesthesia is like an adaptation mechanism, so you could easily develop a digit span synesthesiaover time!
Synesthesia Audio
See an example of Danniel Tammet Synesthesia stuff - all of it is DLPFC linked.
https://www.researchgate.net/publication/23247175_Savant_Memory_for_Digits_in_a_Case_of_Synaesthesia_and_Asperger_Syndrome_is_Related_to_Hyperactivity_in_the_Lateral_Prefrontal_Cortex#pf8
Here are some useful links to look into it more:
https://www.cambridgebrainsciences.com/assets/partners/brain-regions-associated-with-the-cambridge-brain-sciences-tasks-1543010861.pdf
https://www.cambridgebrainsciences.com/science/tasks/digit-span#getstarted
A website I use:
I have many more websites, so just PM/message me on this privately, I get you all setup if needed.
When you get up there in ability, try digit span in different languages/translations, characters, numbers, or symbols,etc.
Right now I even try to push it with the Greatest Salesman NFT, memorizing callback numbers or points of contact.
I could be here all day writing on this, but yeah.
Posting links and research.
The key is to keep the plasticity growing and evolving.
Most of it is experience dependent plasticity.
So it’s up to you as the brain user to make the changes you seek.
Keep pushing yourself.
Keep going.
And just watch how you accomplish all beyond what you thought originally was possible.
***That said, the Brain Dancer is still a great alternative.
Just make sure you get the reps in, non-withstanding which field you do end up using.
***Oh and Lucid dreaming = DLPFC, I would argue consciousness in general linked to the PF