Increased Signal Complexity Improves the Breadth of Generalization in Auditory Perceptual Learning

Figure 2

Representation of a sample trial. Listeners are presented with a reference soundscape followed by a 970 ms interstimulus gap. They are then presented with a comparison tone and are required to indicate whether the reference tone was presented 1st or 2nd. In the standard condition the reference tone is always of the same duration, with reference and comparison tones presented in a random order. Feedback is given after the response before the onset of the next trial. The duration of the reference tone is stable with the comparison tone adapted on a 3 up/1 down staircase procedure. The left hand column of the figure shows the image that was sonified, with the right hand column showing the spectrogram for the resultant soundscape.