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Related Experiment Videos

P300 and alpha event-related desynchronization (ERD).

J Yordanova1, V Kolev, J Polich

  • 1Institute of Physiology, Bulgarian Academy of Sciences, Sofia. kolev@iph.bio.bas.bg

Psychophysiology
|April 26, 2001
PubMed
Summary

The P300 event-related potential (ERP) and alpha electroencephalography (EEG) activity are linked. P300 brain responses precede and predict individual differences in alpha event-related desynchronization (ERD).

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Electroencephalography (EEG)

Background:

  • The P300 event-related potential (ERP) is a key cognitive marker.
  • Event-related desynchronization (ERD) of alpha activity reflects neural processing.

Purpose of the Study:

  • To investigate the relationship between P300 ERP and alpha ERD.
  • To compare slow (7-10 Hz) and fast (10-14 Hz) alpha ERD in relation to P300.

Main Methods:

  • Simultaneous analysis of P300 ERP and alpha ERD (7-10 Hz, 10-14 Hz).
  • Auditory passive and active oddball paradigms were used.
  • Task (target vs. nontarget) and electrode (Fz, Cz, Pz) effects were examined.

Main Results:

  • P300, slow alpha ERD, and fast alpha ERD showed similar task and electrode effects.

Related Experiment Videos

  • P300 preceded both slow and fast alpha ERD.
  • P300 amplitude and latency predicted individual variance in alpha ERD.

    • Conclusions:

    • P300 and alpha ERD are related neural processes.
    • P300 influences or guides slow and fast alpha ERD.
    • The relationship between P300 and alpha ERD differs across alpha frequency bands.