Functional differences of low- and high-frequency oscillatory dynamics during illusory border perception

Simple item page
dc.contributor.authorBosman, Conrado A.
dc.contributor.authorZamorano, Francisco
dc.contributor.authorAboitiz, Francisco
dc.date.accessioned2024-01-10T12:39:07Z
dc.date.available2024-01-10T12:39:07Z
dc.date.issued2010
dc.description.abstractNeuronal oscillations are an essential part of several brain processes like perception, memory and attention, but little is known about the simultaneous dynamics of different frequency bands in such processes. Here, we studied the low- and high-frequency dynamics of neuronal oscillations in a task that involves covert searching and visual perception of an illusory contour figure (Kanisza square). Subjects were cued to a particular region of the space, and then a matrix of illusory contour inductors appeared. Illusory contour could appear at the cued position, in a different position or not appear at all. We analyze the condition in which an illusory contour appears and those in which the illusory borders do not appear. During the visual perception of the illusory contour, we found a significant increase in a narrow and sustained gamma frequency band (55-65 Hz). We also found a transient increase in the theta band (4-10 Hz), 0.3 s after stimuli onset. This low-frequency power increase correlates strongly with the detection of the illusory contour and it is inversely correlated with the gamma-band response. When illusory contours were absent, a sustained low-frequency response in the same frequency range was present until appearance of the motor response. The intensity of this low-frequency power response was also related to the speed of the motor response. We hypothesize that theta and gamma interact to process different aspects of the task. Gamma would be related to perception of the stimuli, while theta would be involved in search mechanisms or the initiation of a motor response. (C) 2010 Elsevier B.V. All rights reserved.
dc.description.funderMillenium Center for Integrative Neuroscience
dc.fechaingreso.objetodigital21-03-2024
dc.format.extent11 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.brainres.2010.01.004
dc.identifier.eissn1872-6240
dc.identifier.issn0006-8993
dc.identifier.pubmedidMEDLINE:20064488
dc.identifier.urihttps://doi.org/10.1016/j.brainres.2010.01.004
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/77149
dc.identifier.wosidWOS:000275624100010
dc.information.autorucMedicina;Aboitiz A;S/I;100165
dc.information.autorucMedicina;Zamorano F;S/I;124689
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final102
dc.pagina.inicio92
dc.publisherELSEVIER
dc.revistaBRAIN RESEARCH
dc.rightsacceso restringido
dc.subjectIllusory border perception
dc.subjectGamma power modulation
dc.subjectTheta power modulation
dc.subjectFrequency dynamics
dc.subjectFourier analysis
dc.subjectVisuomotor interaction
dc.subjectCross-frequency analysis
dc.subjectGAMMA-BAND ACTIVITY
dc.subjectNEURONAL OSCILLATIONS
dc.subjectTHETA-OSCILLATIONS
dc.subjectVISUAL-CORTEX
dc.subjectSYNCHRONIZATION
dc.subjectEEG
dc.subjectATTENTION
dc.subjectPOWER
dc.subjectMECHANISM
dc.subjectRESPONSES
dc.titleFunctional differences of low- and high-frequency oscillatory dynamics during illusory border perception
dc.typeartículo
dc.volumen1319
sipa.codpersvinculados100165
sipa.codpersvinculados124689
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2024-03-21. Functional differences of low- and high-frequency oscillatory dynamics during illusory border perception.pdf
Size:
3.02 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Artículos de revistas