Early trade in New York: euro climbs versus dollar

The euro rose against the dollar on Thursday after Federal Reserve Chairman Ben Bernanke's testimony to Congress on the US economy was perceived as more bullish than expected, raising risk tolerance. In a volatile session, the single currency see-sawed between gains and losses repeatedly as it reacted to each new headline from Europe or the United States.
The euro was last up 0.1 percent at $1.3171, within its range of the last week, roughly between $1.3020 and $1.3230. Against the yen, the dollar dipped 0.1 percent to 76.14 yen, sticking near a three-month low touched on Wednesday and keeping alive concerns that Japanese authorities may intervene to curb yen strength.