An international team of scientists in Europe has created a silicon chip designed to function like a human brain. With 200,000 neurons linked up by 50 million synaptic connections, the chip is able to mimic the brain's ability to learn more closely than any other machine. (Technology Review)
Last Monday, Nicholas Hughes, son of poets Ted Hughes and Sylvia Plath, killed himself. His mother was one of the world’s most famous suicides, and news stories have mentioned the tendency of suicide and depression to run in families. But this tragic inheritance is just part of a more complex story in which our lives are shaped by genes, environment — and unexpected connections between the two.
Scientists who have been following families with a history of depression have found structural differences in family members’ brains — specifically, a significant thinning of the right cortex, the brain’s outermost surface. The thinning may be a trait or a marker of vulnerability to depression, the researchers suggested. (NYTimes.com)