Patrick Lathrop

I have extreme aphantasia, and have been able to produce mood altering states of consciousness through essentially ONE mean. The majority of sounds and programs marketed as "Binaural" beats or "Hemi-synch" do not actually manage to achieve what they are claiming to, and are produced by people who don't understand the actual scientific phenomena they're trying to produce. But, the few legitimate and well produced tones, can, have a profound impacts sans a minds eye.  Sadly, they never did what i had hoped they would, and had no impact on restoring visualization, but if you are trying to induce altered states of consciousness, or guided control of your thoughts, emotions and subconscious without the visualization component. It's probably a valuable tool. To see if it works successfully  for you i'd recommend starting with the declassified CIA "Gateway" program. Solely because its ACTUAL, scientific, binuaral beats that DO create  and produce a hemi-synch state, even in those of us without visualization. Heck, the narrator even acknowledges people who cant ACTUALLY visualize during the instructions for it in certain segments- because its more about your personal relation of the altered states of consciousness to other aspects of thought or action like breath patterns. They're always scrubbing the gateway program audio off the internet w/ copyright strikes but people ALWAYS re-upload the first two segments for orientation and 10-state. The later modules will be harder to come by especially in decent quality, but if it resonates they may be worth searching out or actually purchasing. Like I said, it didn't do what I wanted it to for me, but perhaps you may be more lucky.

Ayahuasca is in essence is just DMT, the ONLY results I know of with any long term success involve DMT, or 5-MeO-DMT, however it's still rare for it to actually work and produce any longstanding results, and requires dedicated effort to maintain and grow. The biggest indicating factor if your likely to have success is going to be dependent on your own sleep patterns, if you are able to dream frequently despite not being able to voluntarily visualize and still get normal functions, its more likely you could be one of the lucky few. Which, even if you are, isn't going to suddenly boost you to hyperphasia territory where you can imagine your own fantasy land and de/reconstruct mechanical designs in your head like einstein and tesla. IF you are even in that lucky 10% it will still take years of development to cultivate that ability to visualize. At first, once the DMT wears off you would be lucky to change the ambient color of your minds eye and it will take as much effort as physical rehabilitative therapy on a mental level to get you to the point of average people where say you're able to have a mental space and then imagine a specific object in it like say an apple. Obviously, its always preferential if psychoactive stimulant's can be acquired as part of a proper clinical study, or done by those with the resources to document their results. But, trials and access are few and far between so i don't blame those that strongly consider self medication and experimentation. My only regret is that when someone like you or I does take that brave step forward, even if they get lucky and they're one of the few that produce results there's no EEG scans or other data to provide insight into what / why it works when it DOES, or by what function visualization is being restored. Everyone who drives several hours to go on a spirit journey and take that ayahuasca is one less person whose reaction to it even has the opportunity to be scientifically studied or understood, and we're not left with many options for it TO be. Guess the TL;DR is "It's a long shot, but, probably one of the best you've got."

With a price tag of 21k for no guaranteed results i'd strongly advise against it. It'd be like doing physical therapy when you physically no longer have legs, no amount of moving around will produce a prosthetic. The same way Psychology cannot fix a mental problem caused by physical hormonal imbalances that require a Psychiatrist and medication to resolve, no amount of meditation and psychological conditioning will take you from a zero state of NO visualization at all to improved or progressing states of phantasia. If you have the money and resources you would be much better served by looking at clinical trials you may be able to legally enroll in involving psychoactives like Psylocybin, LSD, or the various DMT's. While rare, different psychoactive's have been shown to produce results in different people with seemingly no real rhyme or reason. From observation it seems like DMT's is the most likely psychoactive to produce longstanding results. I've seen plenty of people trip on LSD and have their sensory perception altered, things being  wavy for instance for a short durations, but ive never seen someone report  lasting or controllable visualizations as a result of LSD. Ive seen people take DMT from several different sources be it natural or artificial, 5MeO, or ayahuasca, its the only thing that produces "consistent" results, and they're hardly consistent- with only a handful of dozens having any long-lasting or long standings results of their consumption. Honestly, if you're looking at a 21K price tag, and you have the resources to do so knowing it likely wont work and wont tread any new ground if you haven't already tried, and failed to produce results through psychoactives- I cant strongly enough recommend trying to leverage your assets to be involved in actual clinical research studies, or even fund your own de-facto observation. Having a hospital do EEG monitoring would run you like 7K for extended monitoring service, and if your one of the very lucky, and sadly, very few that DO produce visual results, seeing that brain wave activity if and when you are able to activate  may provide helpful data to understand what separates those capable of being activated by the substance from those whom are not, and hopefully start working towards solutions to close the gap. Bell's a bust, psychoactive's are a sub 10% chance of functioning that in 99% of instances require you to break the law because research just isn't being done, and if it is, most of us just aren't lucky enough to qualify or be near enough to engage in the studies. I'm not any kind of doctor, researcher, or scientist- so don't take my words as gospel. But you'll be hard pressed to find another person more desperate to be rid of their condition.  5MeO-DMT  is the only substance to successfully produce the metaphoric muscles required for long term development of visualization. I've been doing independent study on my condition for the last ten years, i can count on one hand the number of people ive seen post or talk about any kind of long-term success or recovery after being members of the community, and they all involve DMT shocking their brains into building the infrastructure to process itself. Even if you are one of the lucky ones, dont think its going to be instantaneous either, you'll  maybe be able to get your minds eye to glow different colors at first, those who DID force activation still only had the most basic form and function as a result- after the substance has worn off. But that's enough right? If you HAVE a muscle you can work it out and grow from there. Personally ive yet to try 5MeO due to the legality and availability of it. I also  severely doubt it will work on me since i lack one of the common threads between the others. that being, functional sleep. Even in the most advanced suffers of aphantasia most are still able to sleep and dream with some frequency. Where as I, almost never dream. Once, maybe twice a year, often very short, and extremely vivid. So, if you have a semi-normal functioning sleep state and dreams, you've got a fair shot at it helping. However, if your like me, where your brain is so broken it cant even process its OWN DMT in the pineal gland- well, wouldn't get your hopes up, but a long shots better than none right? Just my two cents, either way I hope whatever you do, or try, produces some results so myself and others may yet find hope or at least better understanding in them.