Figure 4
From: Echoic memory of a single pure tone indexed by change-related brain activity
A model to explain the relation between echoic memory and change-related cortical activity. The vertical axis and horizontal axis indicate the strength of echoic memory and time, respectively. The model is based on the present and previous findings that a single presentation of a sound forms an echoic memory and the temporal representation of both the storage and decay of echoic memory is logarithmic [17]. In this model, echoic memory develops during presentation of the sound and decays during the silent interval in a logarithmic fashion, and the amplitude of the change-related STG response is linear to the strength of memory at the breaking point (onset of the deviant).