Smoking status as a potential confound in the BOLD response of patients with schizophrenia

Autor: Randy L. Gollub, Vincent P. Clark, Andrew R. Mayer, Leonard Leyba, Nancy C. Andreasen
Rok vydání: 2008
Předmět:
Zdroj: Schizophrenia Research. 104:79-84
ISSN: 0920-9964
DOI: 10.1016/j.schres.2008.06.008
Popis: Background Functional magnetic resonance imaging (FMRI) studies comparing schizophrenia patients and controls may have been confounded by the vascular effects of heavier long-term cigarette use in patients. Methods The blood oxygen level dependent (BOLD) response to a simple sensorimotor task was compared between schizophrenia patient with a smoking history (mean 17 pack years) and carefully matched patient non-smokers and control non-smokers. Results Group differences in activation magnitude and spatial extent were non-significant. Conclusions Typical smoking histories in schizophrenia patients do not significantly confound FMRI results in simple sensorimotor tasks when patient demographics are carefully controlled.
Databáze: OpenAIRE