Central Auditory Processing of Temporal and Spectral-Variance Cues in Cochlear Implant Listeners
Fig 2
Peripheral and central masking stimuli tested in CI listeners.
Multi-electrode maskers (black) were placed either inside [peripheral masking; P masker: (A), (D)] or outside [central masking: (B), (C), (E), (F)] the peripheral filter (marked by the protected band, shaded region). The signal (red) was fixed on electrode 11. Four randomly chosen masker electrode positions outside of the filter remained constant [C masker: (B), (E)] or randomly varied [R masker: (C), (F)] between bursts over time. Maskers were presented in two temporal conditions. In the synchronous condition [sync maskers: (A-C)] masker components gated on synchronously re signal and in the asynchronous condition [async maskers: (D-F)] the four independent masker components had onset delays of 0, 50, 100, and 150 ms re signal (see text for details).