Split-plot ANOVAs revealed that vocoding decreased N1 latencies across groups (P < 0.01), but no vocoding effects were observed for the other peaks. Individual (open symbols) and group mean (closed symbols) for cortical latencies to DISH (top panels) and DITCH (bottom panels) in unprocessed (left column) and vocoded (right column) conditions in young normal-hearing (YNH, blue circles), older normal-hearing (ONH, red triangles), and older hearing-impaired (OHI, black squares) listeners. Error bars show ± 1 standard error