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Learn about your vagus nerve, breathwork, stimulation and ultrasound. Free lessons, practical guides and a community to explore with Sterling Cooley.

Your ultrasound coaching community. Learn with Sterling Cooley, meet fellow coaches, develop your skills, and build your practice.

462 contributions to Vagus School
A one-page note for your next appointment
Ever walked out of an appointment and remembered the one thing you meant to ask? Here is a simple one-page note you can fill in beforehand: 1. Your concern, in your own everyday words. 2. When it began, how it affects your day and what you want to ask. 3. Medicines, supplements or devices you use, to talk through with your clinician. NCCIH encourages telling your health care providers about any complementary approaches you use: https://www.nccih.nih.gov/health/are-you-considering-a-complementary-health-approach 4. Your most important question at the very top. Then bring it along, on paper or on your phone. A shorter version still counts. This page is just for you to get your thoughts in order. Please keep your personal details for the note itself, not the comments. Save this post so the layout is ready for your next conversation.
A one-page note for your next appointment
2 likes • 19d
@Amy E Sparks That's a good point, it's funny these days most of my doctors and nurses have those little note-takers that are like recording our conversation, it's kinda neat !! Definitely important to have good record keeping in this area of our life !!!
🚨 The #1 Question I Get: "What's the Best Ultrasound Device to Buy?" (My Official Answer + Regional Guide)
🌍 October 2026 update: more places to buy Open the expanded buying guide in Module 2 → TENSPros stays our first-choice supplier, even during backorders. The guide now includes more US and Canadian options, three Mexico suppliers, and listings or regional alternatives across Latin America, Asia, the Middle East, Europe, the UK and Australia. The US-1000 remains our budget starting option. Standard US PRO 2000 devices have their own list, and PULSE is separate optional hardware. Check each seller’s current stock, exact model and delivery terms before ordering. For China, we have not yet confirmed a domestic seller of the exact US-1000 or US PRO 2000. The guide labels unconfirmed leads clearly and keeps out-of-stock suppliers available to revisit. Use Module 2 for the expanded supplier list and current sourcing notes alongside the original overview below. Welcome to the group! I know the first few modules are in the Classroom: Skool.com/vagus/classroom available to read right now - but I always see the same question pop up immediately: "What device should I buy?" Instead of *I guess* hoping you will make use of the Classroom which already has the answer, or hoping you would use the Search feature at the top of the site, I wanted to put the answer front and center. This post will be pinned at the top, so you can reference it anytime. The goal is to get you started with the right tool for your region. Let's break it down: USA: If you are in the USA: The US-1000 is your go-to. It’s affordable, incredibly effective, and the perfect entry point for Vagus Nerve Stimulation. For around $54 USD, it’s one of the most accessible biohacks you can invest in. The benefits—from reduced inflammation and deeper sleep to a calmer nervous system—are tremendous for the price. - 👉 Click for Module 2: How to Buy an Ultrasound
🚨 The #1 Question I Get: "What's the Best Ultrasound Device to Buy?" (My Official Answer + Regional Guide)
0 likes • 21d
@Ahmed Abd Elwahab Epic !
0 likes • 19d
@Lesley Twitty Nope you don't have to wait, if it's your first few weeks tho, you want to separate them, you will want to know which side your body prefers.
High intensity Right Insular Cortex stimulation
Ive been targeting the Right Insular Cortex ever since I got my US-2000, on MEDIUM. It has been beneficial. Last night despite the warning, I tried it on HIGH intensity for giggles (I know, I know..). I thought I'd share my experience for the sake of science and anyone curious: In short it reminded me of a bad trip. Late at night I placed the device on my head, and within seconds I felt like my heart was racing, and that I was out of breath. I laid down on my bed, and my sense of self was dissolving, sending my brain into panic mode. Similar to the beginning of n drug induced EGO death. My mind was deepfried, struggling to form any coherent thought, while a rush of emotions came on, fear sadness surprise etc. Slept it off, but it was hard. Like trying to sleep on a bad fever. Waking up occasionally throughout the night, with incoherent thoughts calling me to act. Like there was something I needed to do or pay attention to. Conclusions: There was a lot of stuff stored in there. Targeting this area on HIGH triggered an intense rush that overwhelmed me. Completely different from MEDIUM intensity. Is it unsafe at this intensity ?
High intensity Right Insular Cortex stimulation
3 likes • Oct 5
Hey, well I want first and foremost thank you and welcome you to the world of Ultrasound, which certainly is is different in some ways from. Probably a lot of the stuff that people are familiar with. I would say that yeah if you’re talking about the base level US 2000 pro on high that is just generally gonna be a lot of power and sort of I personally think unnecessary on especially on the head or most areas that’s what you call continuous wave Ultrasound. 100% on and not pulsed. That’s why like something like medium is a pulse frequency most likely there are obviously ways to still get like a higher intensity, but still make it post we found like a 75% pulse but from the same device can be really still really effective, but obviously not kind of push you over the edge on high. But generally answer your question so only 50% of the Ultrasound that you put on the head can get through your skull so first and foremost, the intensity even at high with your school in the way, your not gonna be able to do damage unless you don’t have any feeling on your skin it’s complicated but basically no you definitely didn’t damage yourself. You probably more likely caused some of the neurons in that region to allow some of these kind of weird feelings to bubble the surface. Like you, you disinhibited the inhibiting neurons that were there kind of holding back the tides of weirdness so… But yeah, I would say for now just stick to like the medium intensity which is 50% or consider upgrading your Ultrasound to be able to control that kind of stuff like with the pulse module which would allow you to like have more fine-tune control of that stuff. Ultradao.to/device I have a so yeah that would be my recommendation but I think you’re gonna you’re gonna be fine. Anyway how are you feeling now? It’s been a little bit since this experience. What’s your update?
1 like • 20d
@Bob Dylan Hey, well let me try to clarify, HIGH on the US-2000 Pro as an unmodified device is not really a great idea, it's just on the fence on being high enough to be uncomfortable. That's why I specifically modified the device (with that PULSE module isntalled) - to convert the HIGH setting from a 100% to a 75% which makes it still HIGH but not anywhere near the too much level, it's still powerful, but it's also makes it a pulsed HIGH frequency system. It's really cool, I would say you would greatly benefit from having it, as you obviously want to know your way around the Ultrasound tech. We still have a bunch of units, enough to last us about the rest of October and November, maybe December. UltraDAO.to/device and we can have the modules shipped out quite rapidly too, and installation is super easy. I just want you to experience Ultrasound and to also do it effectively. The US-2000 Pro originally wasn't built for guys like you to "ride the wave" lol lmao even ! But the Pulse will give you the ability to have nearly full control over how the device works, as God intended :P haha
New to the Community membership
I'm really GLAD to be invited to this very interesting Community! With my congratulations for the helpful and deep scientific knowledge you diffuse. I will learn a lot. I've found a great help in practicing VNS through breath and, as a biologist, I then studied with interest this significant branch of human physiology and pathophysiology. I will follow the Community with interest.
0 likes • 20d
Oh very cool, welcome Sara ! Yeah we're all pretty big Vagus Nerve fans over here :D We've got some amazing people, and a really in-depth classroom, with some cool stuff to learn :P
Vagus Nerve Stimulation (80hz) Suppresses Inflammation Without Drugs
Neuromodulation is advancing toward precision physiological control. A randomized, double-blind, sham-controlled trial has confirmed the efficacy of transcutaneous auricular vagus nerve stimulation (taVNS) in suppressing systemic inflammation. By applying 80 Hz pulses to the cymba concha for 30 minutes, researchers observed a 22% reduction in TNF-α and a 15% reduction in IL-6. These results were achieved without pharmaceutical intervention. The data reveals a critical distinction: taVNS modulates the immune system without impacting heart rate variability or baroreflex sensitivity. This indicates the stimulation bypasses cardiac vagal tone entirely. Functional MRI confirms the mechanism involves the nucleus tractus solitarius (NTS). This activates a splenic nerve cholinergic pathway that inhibits macrophage cytokine release at the source. This non-invasive approach provides a blueprint for treating chronic conditions like rheumatoid arthritis and IBD. It represents a paradigm shift toward targeted bioelectronic medicine - even possible further applications in preventing Alzheimer's from developing in the first place. Very big news ! https://pmc.ncbi.nlm.nih.gov/articles/PMC12960021
Vagus Nerve Stimulation (80hz) Suppresses Inflammation Without Drugs
5 likes • Apr 3
@Mathew Robins That's why I always found a more holistic approach to tracking health over the course of VNS was a better approach that "it's just one number" - it's not how I would do it. It was fun exploring that people may notice shifts in emotional reactivity as well as hunger, tiredness, lots of things can shift when the Vagus Nerve is getting some attention :D
0 likes • 20d
@Pemo Theodore I cannot give you lvl2, you earn that by posting comments and getting likes, you need 5 total, which means you need 4 more ! Easy to get :D
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Sterling Cooley
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@sterling-cooley
Vagus Nerve Stimulation Specialist Admin of Ultra School

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