USDJPY stays in a downward price channel on 4-hour chart, and remains in downtrend from 84.17, the price action from 80.31 is likely consolidation of the downtrend.. Now the fall from 81.77 would possibly be resumption of the downtrend, another fall to 79.50 area is possible over the next several days. Key resistance is now at 81.77, only break above this level will indicate that the fall from 84.17 had completed at 80.31 already, the further rise to 83.00 could be seen.