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The most common objection to EEG-guided anesthesia is not that it fails. It is that reading the signal was never part of anyone's training. This series is the remedy. The six videos below were developed by our co-founders Patrick Purdon and Emery Brown, and each runs about five minutes. The first two build the foundation: why the depth-of-anesthesia indices introduced in the 1990s never became routine practice, and how the EEG waveform and its spectrogram actually work. The r

Anesthesiologists tell patients they are about to go off to sleep. It is a kindness, and it is not true. In this talk our co-founder Dr. Brown explains what actually separates the two. Sleep is something the brain does on its own, moving through distinct states all night long. Anesthesia is a drug-induced reversible coma that holds the brain in one fixed place until the surgery is finished. The difference is not academic. It is why a monitor at the bedside should show what th

Dr. Brown has spent his career on a question most people assume medicine settled long ago: what actually happens in the brain under general anesthesia. His answer is that it is not sleep but a drug-induced reversible coma, and that the state it produces can be seen on an EEG while it is happening rather than inferred afterward. It is the clearest short account of the science we know of. He gave this talk years before PASCALL existed, and the company is what it looks like to b