Deficits of perceived spatial separation induced prepulse inhibition in patients with schizophrenia: relationships to symptoms and neurocognition

Autor: Ning-Bo Yang, Qing Tian, Yu Fan, Qi-Jing Bo, Liang Zhang, Liang Li, Chuan-Yue Wang
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: BMC Psychiatry, Vol 17, Iss 1, Pp 1-12 (2017)
Druh dokumentu: article
ISSN: 1471-244X
DOI: 10.1186/s12888-017-1276-4
Popis: Abstract Background Prepulse inhibition (PPI) and attention were impaired, which may cause psychotic symptoms and (or) hinder the cognitive functions in schizophrenia. However, due to the measurement methods of PPI, findings about the relationship between PPI and clinical symptoms, cognitive performances have been equivocal. Methods Seventy-five schizophrenia patients (SZ) and 50 healthy controls (HC) were assessed in a modified acoustic PPI paradigm, named perceived spatial separation-induced PPI (PSS-PPI), compared to perceived spatial co-location PPI (PSC-PPI) with inter-stimulus interval (ISI) of 120 ms. Repeatable Battery for the Assessment of Neuropsychological Status and the Stroop Color-Word Test were administered to all subjects. Results Significant decrease in the modified PPI was found in the patients as compared to the controls, and effect sizes (Cohen’d) for patients vs. HCs % PPI levels achieved a significant level (PSC-PPI d = 0.84, PSS-PPI d = 1.27). A logistic regression model based on PSS-PPI significantly represented the diagnostic grouping (χ2 = 29.3; p
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