Mean percent correct AMFD across all probe frequencies.

<p>Individual and average data is shown. The top and bottom panels show mean AMFD for the wide and narrow spacing, respectively. The black bars show performance when the target AM was delivered to all 3 channels and the hatched colored bars show performance when the target AM was delivered to a single channel; data are from a previous related study [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0139546#pone.0139546.ref021" target="_blank">21</a>]. The filled bars show performance when the target AM was delivered to a 1 of 3 channels. The caret symbol (^) indicates the target AM channel(s). The dashed line shows chance-level performance (33.3% correct).