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Visual P2 component is related to theta phase-locking
- Source :
-
Neuroscience Letters . Oct2007, Vol. 426 Issue 3, p181-186. 6p. - Publication Year :
- 2007
-
Abstract
- Abstract: In this study we investigated the hypothesis whether P2-related differences tested in a visual priming paradigm are associated with theta phase-locking. We recorded the EEG from 31 electrodes and calculated phase-locking index and total power differences for frequencies between 2 and 20Hz. ERPs (event-related potentials) were analyzed for P1, N1 and P2 components. P2 showed strongest task-related amplitude differences between congruent and incongruent targets. A source analyses was performed for the P2 component using sLoreta that revealed local generators of the P2 in parieto–occipital regions. Phase-locking analyses showed specific effects in the theta range (4–6Hz) appearing in time windows at around the P2 component. We draw the conclusion that phase-locked theta reflect top-down regulation processes mediating information between memory systems and is in part involved in the modulation of the P2 component. [Copyright &y& Elsevier]
- Subjects :
- *NEUROSCIENCES
*MEMORY
*EVOKED potentials (Electrophysiology)
*THETA rhythm
Subjects
Details
- Language :
- English
- ISSN :
- 03043940
- Volume :
- 426
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Neuroscience Letters
- Publication Type :
- Academic Journal
- Accession number :
- 27003629
- Full Text :
- https://doi.org/10.1016/j.neulet.2007.08.062