EEG Multiscale Complexity in Schizophrenia During Picture Naming
Metadatos
Mostrar el registro completo del ítemAutor
Ibáñez Molina, Antonio J.; Lozano, Vanessa; Soriano, María F.; Aznarte, José I.; Gómez Ariza, Carlos Javier; Bajo Molina, María TeresaEditorial
Frontiers Media
Materia
Schizophrenia Non-linear analysis Multiscale lempel-ziv complexity Naming task
Fecha
2018-09-07Referencia bibliográfica
Ibáñez-Molina AJ, Lozano V, Soriano MF, Aznarte JI, Gómez-Ariza CJ and Bajo MT (2018) EEG Multiscale Complexity in Schizophrenia During Picture Naming. Front. Physiol. 9:1213.
Patrocinador
This research was supported by Junta de Andalucía (Biomedical and Health Science Research Project PI-0410-2014 to MS and PI-0386-2016 to S. Iglesias-Parro); and Ministerio de Economía, industria y competitividad (PSI2015-65502-C2-1-P to MB and PSI2015-65502-C2-2-P to CG-A).Resumen
We aimed to investigate changes in non-linear brain dynamics of patients
with schizophrenia during cognitive processing. As expected, controls had fewer naming errors than patients. Regarding EEG
complexity, the interaction between Group, Task and ROI indicated that patients showed
higher complexity values in right frontal regions only at rest, where no differences in
complexity between patients and controls were found during the naming task. EEG
complexity increased from rest to task in controls in left temporal-parietal regions,
while no changes from rest to task were observed in patients. Finally, differences in
complexity between patients and controls depended on the frequency bands: higher
values of complexity in patients at rest were only observed in fast bands, indicating
greater heterogeneity in patients in local dynamics of neuronal assemblies. Consistent with previous studies, schizophrenic patients showed higher
complexity than controls in frontal regions at rest. Interestingly, we found different
modulations of brain complexity during a simple cognitive task between patients and
controls. These data can be interpreted as indicating schizophrenia-related failures to
adapt brain functioning to the task, which is reflected in poorer behavioral performance.