Hans Berger

Von Economo's insight was at least seventy years ahead of its time, and his careful clinical observations, drawn from one of the most tragic epidemics of the twentieth century, laid the foundation for our modern understanding of how the brain switches between wakefulness and rest.

The invention of the electroencephalogram, or EEG, in nineteen twenty-nine by the German psychiatrist Hans Berger gave scientists the first tool to objectively measure brain activity during wakefulness and rest, transforming the study of drowsiness from a field that relied on subjective reports and behavioral observations into one grounded in measurable electrical signals.

Berger discovered that the brain produces different patterns of electrical waves during alert wakefulness, relaxation, and rest, providing the first physical evidence that rest is an active brain process involving organized patterns of neural activity rather than a passive shutting down of the brain's circuits.

Berger's initial findings were met with skepticism by the scientific community, and it took several years and independent replications by other researchers before the EEG was accepted as a legitimate window into the brain's internal state.

... at the end of this one.

But also the one on Hans Berger, the guy who discovered the EEG in the 1920s that came into clinical use in the '30s.

Um, you're right that the EEG machine, this machine for recording these brainwaves, became what you call a visual shorthand for the convergence between brain and machine.

And can you unpack that a bit?

Von Economo's insight was at least seventy years ahead of its time, and his careful clinical observations, drawn from one of the most tragic epidemics of the twentieth century, laid the foundation for our modern understanding of how the brain switches between wakefulness and rest.

The invention of the electroencephalogram, or EEG, in nineteen twenty-nine by the German psychiatrist Hans Berger gave scientists the first tool to objectively measure brain activity during wakefulness and rest, transforming the study of drowsiness from a field that relied on subjective reports and behavioral observations into one grounded in measurable electrical signals.

Berger discovered that the brain produces different patterns of electrical waves during alert wakefulness, relaxation, and rest, providing the first physical evidence that rest is an active brain process involving organized patterns of neural activity rather than a passive shutting down of the brain's circuits.

Berger's initial findings were met with skepticism by the scientific community, and it took several years and independent replications by other researchers before the EEG was accepted as a legitimate window into the brain's internal state.

So there's EEG, which is almost 100 years old, invented in 1928.

Nine-ish by Hans Berger, who was a physician that was trying to prove that psychic powers were real.

True story.

History of science is fascinating.