A third of U.S. adults in a recent Pew Research Center survey said they'd be "enthusiastic" about a brain chip to enhance their thinking power.
The survey of 4,726 adults examined public attitudes about three emerging technologies that could improve a person's health, cognitive ability or physical capacity.
Responses showed that a majority of American adults are uneasy, or "worried" about all three. But in all three cases, at least a third of respondents were "enthusiastic."
--Using implanted brain chips to boost our thinking power: 69 percent worried vs. 34 percent enthusiastic.
--Editing the genes of babies to eliminate hereditary flaws and diseases: 68 percent worried vs. 49 percent enthusiastic.
--Transfusing synthetic blood to give people much greater speed, strength and stamina: 63 percent worried vs. 36 percent enthusiastic.