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• W1990380087 abstract "P50 suppression is viewed as an operational measure of sensory gating that is reduced in patients with schizophrenia and their family members. Previous reports have demonstrated that neural gating is regulated by monoaminergic tone in rodent models of P50 suppression.In this study, 11 healthy subjects participated in P50 event-related potential recordings at baseline and after either oral administration of dextroamphetamine (.3 mg/kg) or placebo, to determine if the administration of a monoaminergic agonist produces P50 suppression deficits similar to those observed in patients with schizophrenia.As hypothesized, amphetamine disrupted the suppression of the P50 event-related potential. There was a statistically significant decrement in P50 suppression during the amphetamine challenge condition (t10 = 3.15, p < .01, mean difference = -44.1%, d = -2.5) relative to the baseline P50 condition. A comparison of P50 suppression in the placebo and amphetamine conditions (both after a baseline recording session) revealed a significant amphetamine-induced disruption of P50 suppression (t6 = 3.71, p < .01, mean difference = -54.4%, d = -3.14).The biochemical alterations associated with an amphetamine-induced disruption of P50 suppression in this study may be related to the pathophysiology of P50 suppression deficits in schizophrenia. The findings are consistent with several careful examinations of suppression deficits in rodent models that have identified the monoaminergic regulation of P50 suppression. These data indicate that amphetamine induces a disruption of P50 suppression in normal subjects." @default.
• W1990380087 created "2016-06-24" @default.
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• W1990380087 date "1999-10-01" @default.
• W1990380087 modified "2023-09-27" @default.
• W1990380087 title "Amphetamine disrupts P50 suppression in normal subjects" @default.
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• W1990380087 doi "https://doi.org/10.1016/s0006-3223(99)00034-7" @default.
• W1990380087 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/10509182" @default.
• W1990380087 hasPublicationYear "1999" @default.
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