Bernanke predicts increasing Fed use of public communications.

Bernanke predicts increasing Fed use of public communications.

Fed's Bernanke under pressure to undertake additional steps to aid economy.

Fed's Bernanke under pressure to undertake additional steps to aid economy.

Economy still "well below its potential," Fed chairman says.

Economy still "well below its potential," Fed chairman says.

Fed watches expectations closely as monetary policy approaches turning point.