Lauren D. Sculthorpe-Petley

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The mismatch negativity (MMN) ERP component is generally considered to reflect the outcome of a pre-conscious change detection mechanism. The manipulation of active task demands has typically demonstrated that the MMN operates relatively independently of inferred attention. It remains a possibility, however, that subjects are capable of covertly sampling,(More)
The mismatch negativity, an ERP that reflects the detection of change in the auditory environment, is considered to be a relatively automatic process. Its automaticity has by in large been studied using the oddball paradigm, in which a physical feature of a frequently presented standard stimulus is changed. In the present study, the automaticity of the MMN(More)
When the brain is damaged, evaluating an individual's level of awareness can be a major diagnostic challenge (Is he or she in there?). Existing tests typically rely on behavioral indicators, which are incorrect in as many as one out of every two cases. The current paper presents a diagnostic device that addresses this problem. The technology circumvents(More)
OBJECTIVE To determine whether the classic inverse relationship between the amplitude of the mismatch negativity (MMN) and deviant probability can be demonstrated to violations of a concrete rule pattern. METHODS In Experiment 1, oddball and patterned auditory sequences were presented with high (p = 0.16) and rare (p = 0.02) deviant probability. In(More)
Abnormal sleep accompanies many psychiatric conditions, but has long been recognized as a particularly conspicuous feature of affective disorders. More than a mere epiphenomenon, the powerful link between sleep and mood regulation is most dramatically demonstrated by the high efficacy of sleep deprivation in alleviating depression. Indeed, the sleep(More)
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