Figure 2

(A) Proposed modelling framework of the auditory streaming paradigm. Two-tone streams are processed in primary ACx. Seconday ACs receives inputs from primary areas and has recurrent excitatory and inhibitory connections. Primary and secondary areas encode respectively pitch and rhythm [11], whereas high-order cortical areas encode the perceptual switches via competition (bistability). (B) ACx circuit model. Primary ACx tonotopic responses consist of square-wave A and B tone inputs \(i_{A}\) and \(i_{B}\) with duration TD and with the time between tone onsets TR (called repetition time – the inverse of the presentation rate (PR)). Parameters c and d respectively represent the connection strength from \(i_{A}\) (\(i_{B}\)) to the A (B) and B (A) units. Bottom: sketch of the model circuit consisting of two mutually excitatory and inhibitory populations with strengths a and b, respectively, receiving inputs \(i_{A}\) and \(i_{B}\). Inhibition is delayed of the amount D