They propose that the N1 response to standard (or 'non-novel') sounds is delayed and suppressed (or attenuated) as a function of its similarity to the preceding auditory events, reflecting short-lived adaptation of auditory cortex neurons. 1 As a consequence, the observed response would be erroneously interpreted as a separate component from the N1 wave.
The adaptation hypothesis proposes that the apparent MMN results from the subtraction of a N1 response to a novel sound, from the N1 response to a non-novel or repeated sound; where the N1 to a repeated sound is delayed and suppressed, as novelty decreases (Jääskeläinen et al., 2004).
DOI: http://dx.doi.org/10.7554/eLife.01312.008 Previously, we considered a simplistic model of sound propagation, in which sounds are simply delayed.
It has two bells dangling from it, and, because of a built-in sound delay, transmits lung sounds in stereo.
But there is a technological problem with sound delay, that makes the music broadcast out of sync with the band.
There was only a slight sound delay, and the user and recipient couldn't speak at the same time.
JH: Well, when you can, as I mentioned earlier, the 9/11 trial, they actually had this portable courthouse with the viewing separated by sound delays and glass.
With only one rehearsal and 20 musicians to tame, the key factor that Kid Millions used to shape his composition was the room's 7.2-second sound delay.
Others have commented upon a sound delay as the main technical drawback of the instrument (if one would dare criticize the Renaissance Man or his craftsman at this time!).
This sound — also slightly delayed — gave the ear and the human brain a sense of where the different instruments were on a bandstand.
