25th January 2012
The Mystery Behind Anesthesia
“But though doctors have been putting people under for more than 150 years, what happens in the brain during general anesthesia is a mystery. Scientists don’t know much about the extent to which these drugs tap into the same brain circuitry we use when we sleep, or how being anesthetized differs from other ways of losing consciousness, such as slipping into a coma following an injury. Are parts of the brain truly shutting off, or do they simply stop communicating with each other? How is being anesthetized different from a state of hypnosis or deep meditation? And what happens in the brain in the transition between consciousness and unconsciousness? “We know we can get you in and out of this safely,” Brown says, “but we still can’t quite tell you how it works.”
20th July 2011
A Whiff of History
“Think of some of your most powerful memories, and there’s likely a smell attached: the aroma of suntan lotion at the beach, the sharpness of freshly mown grass, the floral trail of your mother’s perfume. “Scents are very much linked to memory,” says perfumer Christophe Laudamiel. “They are linked to remembering the past but also learning from experiences.”
But despite its primacy in our lives, our sense of smell is often overlooked when we record our history. We tend to connect with the past visually - we look at objects displayed in a museum, photographs in a documentary, the writing in a manuscript. Sometimes we might hear a vintage speech, or touch an ancient artifact and imagine what it was like to use it. But our knowledge of the past is almost completely deodorized.
