Brain Scans Show Why Older Adults Have Difficulty Making Quick Decisions

“Previous research has shown that increased input from the cortex to a brain area called the striatum allows for faster responses. Brain scans of the volunteers showed that the young people had significantly stronger connections between these two areas. This suggests that the older group might be unable to respond swiftly simply because they cannot make good use of the striatum.”

How Neuroscience Is Changing Our Understanding Of Economics

“The brain, the computer, and the economy: all three are devices whose purpose is to solve fundamental information problems in coordinating the activities of individual units – the neurons, the transistors, or individual people. As we improve our understanding of the problems that any one of these devices solves – and how it overcomes obstacles in doing so – we learn something valuable about all three.”

Intellectual History, Long Out Of Fashion, Begins A Comeback

The field was “swept aside in the 1960s by the rise of social and then cultural history, which regarded talk of ‘the American mind’ as code for ‘the mind of white, male Americans who happened to write books.’ Today, however, a new breed of young intellectual historian is aiming to integrate the spirit of ‘history from below’ with an approach that doesn’t chop American history off at the neck.”

The (Relatively) Brief And Troubled History Of Zero

“There is evidence of counting that stretches back five millennia in Egypt, Mesopotamia and Persia. Yet even by the most generous definition, a mathematical conception of nothing – a zero – has existed for less than half that time. Even then, the civilisations that discovered it missed its point entirely. In Europe, indifference, myopia and fear stunted its development for centuries. What is it about zero?”

If You Pick Us, Do We Not Bleed? Considering Plants’ Perception

“Plants respond to environmental factors. We’ve known this for a very long time. They will turn toward or away from the sun; they will sway with a passing breeze. But more and more, science has been telling us that the awareness goes much deeper, that plants have a kind of sentience. Does that mean they have consciousness? If they have consciousness, can they suffer?”