Don Vaughn,
Ph.D.

He was 26, standing in a recording studio with Nick Lachey from 98 Degrees, watching their dance track inch up to #28 on the iTunes charts. The album was called The Don Vaughn Experiment. It was, in retrospect, a perfectly literal title - because Don Vaughn has always been running experiments on himself, on ideas, on the boundaries between disciplines that were never supposed to touch.

Fast forward to today. The DJ booth is gone. The brain lab is very much here. Vaughn is Co-Founder and CEO of Ampa Health, a Palo Alto neurotechnology company that has FDA clearance for a portable transcranial magnetic stimulation device - and has published research showing it can deliver what normally takes 36 clinic visits over seven weeks in a single 9.5-hour day. The remission rate in their trials: approximately 70 percent for depression.

For context: the first antidepressant you try works about 33% of the time. Each subsequent one you try works less. Vaughn knows this number by heart. He quotes it the way a lawyer cites precedent - not to depress you, but to make the contrast with what Ampa is achieving feel as stark as it actually is.

The physics runs deep here. Vaughn started at Stanford as a B.S. Physics / B.A. Economics double major - the kind of curriculum that trains you to see systems, not just phenomena. When he pivoted to neuroscience for his UCLA PhD, he brought that systems lens with him. His dissertation: "Using Machine-Learning to Diagnose Perception, Feeling, and Action." The title sounds dry. The work was not.

In David Eagleman's perception lab, Vaughn contributed to a finding that turned out to be quietly strange: brains don't process the present in real time. They retroactively integrate information from slightly before and after an event, creating perception out of a temporal blur. He also identified something called the "glimpse effect" - a briefly seen face registers as more attractive than the same face viewed at length. Our brains, it turns out, are optimistic editors who prefer the quick cut.

Then there's ChatterBaby. Between the DJ phase and the PhD finish line, Vaughn built an app that used machine learning to decode infant cries in real time - helping hearing-impaired parents understand whether their baby was hungry, in pain, or fussy. It's the kind of project that tells you everything about how someone thinks: take a hard problem, apply signal processing, make it accessible. He also built eyeFi, which converted video feeds into sound for people with visual impairments. Sensory substitution. The brain rewiring itself to hear what it used to see.

Ampa Health is the logical evolution of all of it. Co-founded with Dr. Jonathan Downar - whose 180+ peer-reviewed publications on TMS and brain imaging give the science its institutional credibility - the company makes a portable, FDA-cleared TMS device called the Ampa One. The portability is the point. Traditional TMS machines are large, expensive, and require specialized facilities. Ampa One is designed for any clinic. The barrier that kept this treatment out of reach - cost, logistics, time commitment - gets dismantled piece by piece.

His TEDx talk, recorded at UCLA under the title "Neurohacking: Rewiring Your Brain," crept past one million views without the benefit of a viral moment or celebrity co-sign. People found it because they were looking for exactly what it promised: a rigorous, accessible explanation of how the brain changes, and whether you can consciously accelerate that change. Vaughn has always been good at the translation layer - the step between "here is what the data says" and "here is what that means for how you live."

He lives now in Palo Alto, the ZIP code where ambition gets a mailing address. He's also a co-founder of Ground Effect Ventures, which invests at the intersection of physical systems, biological signals, and applied intelligence - a portfolio thesis that basically describes his entire career in three phrases. He teaches as adjunct faculty at Santa Clara University while holding a postdoctoral position at UCLA's Semel Institute. It's the kind of schedule that suggests he genuinely does not sleep much, or has cracked some personal version of the one-day protocol for productivity.