Artículo
Event-related potentials associated to N-back test performance in schizophrenia
Autor/es | Arjona Valladares, Antonio
Fondevila Estévez, Sabela Fernández Linsenbarth, Inés Díez Revuelta, Álvaro Ruiz Sanz, Francisco Javier Rodríguez Lorenzana, Alberto Molina Rodríguez, Vicente |
Departamento | Universidad de Sevilla. Departamento de Psicología Experimental |
Fecha de publicación | 2021 |
Fecha de depósito | 2022-10-14 |
Publicado en |
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Resumen | Mapping of Event-Related Potentials (ERP) associated with auditory and visual odd-ball paradigms has shown
consistent differences between healthy controls and schizophrenia patients. It may be hypothesized that higher
task ... Mapping of Event-Related Potentials (ERP) associated with auditory and visual odd-ball paradigms has shown consistent differences between healthy controls and schizophrenia patients. It may be hypothesized that higher task attentional/cognitive demand will result in larger differences in these paradigms, which may help understanding the substrates of cognitive deficits in this syndrome. To this aim, we performed an EEG study comparing the effects of increasing the attentional/cognitive load of an auditory N-back task on the Event-Related Potential in 50 subjects with schizophrenia (11 first episodes) and 35 healthy controls. We considered a post-target window of 1000 ms to explore possible between groups differences in N100, P300, and Late Slow Wave (LSW), and compared these components between 0-back (‘lower attentional/cognitive load) and 1-back (‘higher attentional/cognitive load’) conditions. Our results showed that N100 and LSW amplitude increase from 0- to 1- back condition was significantly larger in healthy controls compared to schizophrenia patients. Furthermore, LSW amplitude difference between 0- and 1-back conditions positively correlated with performance in the behavioral cognitive assessment. Taken together, these results support that higher task attentional/cognitive load (0-back vs. 1-back condition) increase N100 amplitude differences and reveal new findings related to the LSW component in schizophrenia. |
Cita | Arjona Valladares, A., Fondevila Estévez, S., Fernández Linsenbarth, I., Díez Revuelta, Á., Ruiz Sanz, F.J., Rodríguez Lorenzana, A. y Molina Rodríguez, V. (2021). Event-related potentials associated to N-back test performance in schizophrenia. Progress in Neuropsychopharmacology & Biological Psychiatry, 111. https://doi.org/10.1016/j.pnpbp.2021.110347. |
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