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  1. No Access

    Article

    Deviance Detection Based on Regularity Encoding Along the Auditory Hierarchy: Electrophysiological Evidence in Humans

    Detection of changes in the acoustic environment is critical for survival, as it prevents missing potentially relevant events outside the focus of attention. In humans, deviance detection based on acoustic reg...

    Carles Escera, Sumie Leung, Sabine Grimm in Brain Topography (2014)

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    Article

    Acute dopamine and/or serotonin depletion does not modulate mismatch negativity (MMN) in healthy human participants

    Schizophrenia is commonly associated with impairments in pre-attentive change detection, as represented by reduced mismatch negativity (MMN). While the neurochemical basis of MMN has been linked to N-methyl-d-asp...

    Sumie Leung, Rodney J. Croft, Valérie Guille, Kirsty Scholes… in Psychopharmacology (2010)

  3. Article

    Differential Effects of Acute Serotonin and Dopamine Depletion on Prepulse Inhibition and P50 Suppression Measures of Sensorimotor and Sensory Gating in Humans

    Schizophrenia is associated with impairments of sensorimotor and sensory gating as measured by prepulse inhibition (PPI) of the acoustic startle response and P50 suppression of the auditory event-related poten...

    Collette Mann, Rodney J Croft, Kirsty E Scholes, Alan Dunne… in Neuropsychopharmacology (2008)

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    Acute high-dose glycine attenuates mismatch negativity (MMN) in healthy human controls

    Schizophrenia is commonly associated with impairments in pre-attentive change detection as represented by reduced mismatch negativity (MMN). The neurochemical basis of MMN has been linked to N-methyl-d-aspartate ...

    Sumie Leung, Rodney J. Croft, Barry V. O’Neill, Pradeep J. Nathan in Psychopharmacology (2008)

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    Article

    High-dose glycine inhibits the loudness dependence of the auditory evoked potential (LDAEP) in healthy humans

    The loudness dependence of the auditory evoked Potential (LDAEP) has been suggested to be a putative marker of central serotonin function, with reported abnormalities in clinical disorders presumed to reflect ...

    Barry V. O’Neill, Rodney J. Croft, Sumie Leung, Chris Oliver… in Psychopharmacology (2007)

  6. No Access

    Article

    Acute dopamine D1 and D2 receptor stimulation does not modulate mismatch negativity (MMN) in healthy human subjects

    Schizophrenia is commonly associated with an impairment in pre-attentive change detection, as represented by reduced mismatch negativity (MMN), an auditory event related potential. While the neurochemical basi...

    Sumie Leung, Rodney J. Croft, Torsten Baldeweg, Pradeep J. Nathan in Psychopharmacology (2007)

  7. Article

    Acute Serotonin and Dopamine Depletion Improves Attentional Control: Findings from the Stroop Task

    Schizophrenia is associated with impairments of attentional control on classic experimental paradigms such as the Stroop task. However, at a basic level the neurochemical mechanisms that may be responsible for...

    Kirsty E Scholes, Ben J Harrison, Barry V O'Neill, Sumie Leung… in Neuropsychopharmacology (2007)

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    Article

    Dopamine receptor stimulation does not modulate the loudness dependence of the auditory evoked potential in humans

    The Loudness Dependence of the Auditory Evoked Potential (LDAEP) has been suggested as a reliable measure of central serotonin function in humans; however, its specificity for the serotonin system remains a to...

    Barry V. O’Neill, Rodney J. Croft, Sumie Leung, Valérie Guille… in Psychopharmacology (2006)