Relationship To Attentional Processes
The experimental evidence suggests that the auditory sensory memory index MMN provides sensory data for attentional processes, and, in essence, governs certain aspects of attentive information processing. This is evident in the finding that the latency of the MMN determines the timing of behavioural responses to changes in the auditory environment. Furthermore, even individual differences in discrimination ability can be probed with the MMN. The MMN is also a likely component of the chain of brain events causing attention switches to changes in the environment. In the light of these observations, it seems that at present the MMN provides the best available physiological measure of automatic central auditory processing.
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