Brain Waves and Beta Buzz: The Wild Story of Neural Oscillations

What are brain waves?  It’s no wonder the term sounds like science fiction.  In the 1920s, a German psychiatrist embarked on a highly personal quest to discover the supposed medium of telepathy.  By placing electrodes on the human scalp, Hans Berger found waves of electrical brain activity using a tool called electroencephalography, or EEG.  Physicists had recently shown that electromagnetic waves could propagate through space to carry information.  If the brain had its own waves, could they transmit thoughts to others like a radio broadcast?Continue reading

Ghost in the Machine: The Neuroscience of Consciousness

Ghost in the Machine: The Neuroscience of Consciousness

Some questions cannot be addressed by science.  Like parallel universes, the consciousness of others is not something that can be directly observed, measured, or experienced.  Rene Descartes famously said,

I think, therefore I am.

a declaration that only knowledge of one’s own consciousness is absolute.  You assume that friends and neighbors have subjective, internal experiences similar to your own.  And yet, you will never know that these individuals are not mindless automatons, behaving in a manner similar to yourself yet lacking conscious experience.Continue reading