The ability to detect changes in the environment which occur outside the focus of current awareness is essential if the individual is to be able to divert attention to biologically salient stimuli. The preattentional mechanism underlying the automatic detection of stimulus change in the auditory modality has been extensively studied by recording an event-related potential known as the mismatch negativity. Recently a homologous response from the visual cortex has also been described. Ageing ha...Expand abstract
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Age-related changes in the preattentional detection of visual change.
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