What is the effect of focusing auditory attention on an upcoming signal tone? Weak tones, 40 ms in duration, were presented 50 dB continuous white noise and either uncued or cued 82 beforehand by a 12 SL cue tone same frequency duration as signal. Signal was constant for block trials randomly one 11 frequencies from 632 to 3140 Hz. Slopes psychometric functions detection single-interval (Yes/No...