PS model of stream segregation in A1. Blue and red bell curves schematically represent the magnitude and extent of neural activity elicited by A and B tones, respectively, comprising alternating tone sequences along the tonotopic map. Overlap in activity is represented in purple. Different patterns of activity, and associated percepts, evoked under small, intermediate, and large ΔF values, and slow and fast PR conditions are depicted, as indicated. The PS model predicts a dip in between tonotopic activity patterns elicited by A and B tones under stimulus conditions wherein tone sequences are perceived as two separate streams.