Artículo
Temporal spectral evolution of pre-stimulus brain activity in visual and visuomotor tasks
Autor/es | Sarrias Arrabal, Esteban
Berchicci, Marika Bianco, Valentina Vázquez Marrufo, Manuel Perri, Rinaldo Livio Di Russo, Francesco |
Departamento | Universidad de Sevilla. Departamento de Psicología Experimental |
Fecha de publicación | 2023 |
Fecha de depósito | 2023-05-23 |
Publicado en |
|
Resumen | The aim of this study was to describe the spectral features of pre-stimulus event-related potential (ERP) components elicited in visual tasks such as the Bereitschaftspotential (BP), prefrontal negativity (pN) and visual ... The aim of this study was to describe the spectral features of pre-stimulus event-related potential (ERP) components elicited in visual tasks such as the Bereitschaftspotential (BP), prefrontal negativity (pN) and visual negativity (vN). ERPs are considered time-locked and phase-locked (evoked) activity, but we have also analyzed the non-phase but time-locked (induced) activity in the same interval by applying the temporal spectral evolution (TSE) method. Participants (N = 26) were tested in a passive task, a simple response task (SRT) and a discriminative response task (DRT), where EEG activity was recorded with 64 scalp electrodes. We analyzed the time-frequency modulations (phase and non-phase) prior to the onset of the stimuli in the sub-delta, delta, theta, alpha, beta, and gamma frequency bands. The results showed that all the pre-stimulus ERP components were mainly regulated by evoked activity in the sub-delta band. On the other hand, induced activity seems to be linked to evoked responses but with a different psychophysiological role. We concluded that other preparatory cognitive mechanisms associated with ERPs can also be detected by the TSE method. This finding may suggest underlying mechanisms in non-phase activity and requires the addition of non-phase activity analysis to the traditional analysis (phase and evoked activity). |
Agencias financiadoras | Ministerio de Economia, Industria y Competitividad (MINECO). España |
Identificador del proyecto | PSI2016-78133-P |
Cita | Sarrias Arrabal, E., Berchicci, M., Bianco, V., Vázquez Marrufo, M., Perri, R.L. y Di Russo, F. (2023). Temporal spectral evolution of pre-stimulus brain activity in visual and visuomotor tasks. Cognitive Neurodynamics, 17 (6), 1433-1446. https://doi.org/10.1007/s11571-022-09910-2. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
2023_CN_temporal.pdf | 2.179Mb | [PDF] | Ver/ | |