Abstract: 
The auditory system plays a critical role in human social and cultural life because it provides us useful and rich information about the surroundings. In particular, we are able to distinguish sounds coming from a variety of sources with different amplitudes and frequencies and group them into auditory "streams". However, the underlying brain mechanism of auditory stream formation and perceptual switching remains unknown.

In this talk, we first extract the mean spike count values reported in experiment to simulate different trials and compute the durations of two percept types. Further statistical analysis reveals properties and characteristics of perceptual switching. Next, we consider omitting short phase durations and applying accumulation an model to test a hypothesis on how neural data from the primary auditory cortex may be processed by higher order cortical areas.