Hillary Clinton fainting at the 9/11 memorial this weekend has raised concern and speculation over possible causes. There are three causes of fainting.
In an interesting article in the magazine Nautilus, J.B. MacKinnon, reports that a brain scan (fMRI) of free solo climber, Alex Honnold’s brain explains why he is so willing to risk his life to climb rocks without a rope. The fear circuitry in his brain is dysfunctional.
The first dead person I ever saw was a policeman. . . Continue reading
On Saturday, July 4, 2015, a horrifying bloodbath erupted before the eyes of passengers on the Red Line Metro subway train heading to Fourth of July festivities in Washington, DC. Wide-spread criticism in the press and social media erupted over the “apathetic” response of onlookers who reportedly said or did nothing to help the victim. But from the perspective of brain science, this scornful criticism is misguided.
Suddenly something streaks into your peripheral vision. Instantly, you jump back and raise your arms defensively. “What was that!” You exclaim in shock. Only then do you realize that the blurred streak you just dodged was a wayward basketball zinging like a missile on a collision course for your face. A rush of adrenaline flushes through your blood setting your heart pounding and muscles twitching, but there is nothing left to do. Your brain’s rapid response defense system has already detected the threat and avoided it before your conscious mind is even engaged. How is that possible, scientist, Peng Cao and colleagues of the Chinese Academy of Sciences wondered?
What is optogenetics and how is it used to determine the contribution of brain areas to normal and dysfunctional behaviors? We discuss with Kay Tye, Assistant Professor of Neuroscience at MIT. Continue reading
I’ll never forget it. They strapped electrodes to my wrist, cranked up a black dial on a frightening electronic device encrusted with switches and knobs, and shocked me repeatedly with jolts of electricity. Continue reading