Event-related oscillations (EROs) and event-related potentials (ERPs) comparison in facial expression recognition.

Michela Balconi, Uberto Pozzoli

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The study aims to explore the significance of event-related potentials (ERPs) and event-related brain oscillations (EROs) (delta, theta, alpha, beta, gamma power) in response to emotional (fear, happiness, sadness) when compared with neutral faces during 180-250 post-stimulus time interval. The ERP results demonstrated that the emotional face elicited a negative peak at approximately 230 ms (N2). Moreover, EEG measures showed that motivational significance of face (emotional vs. neutral) could modulate the amplitude of EROs, but only for some frequency bands (i.e. theta and gamma bands). In a second phase, we considered the resemblance of the two EEG measures by a regression analysis. It revealed that theta and gamma oscillations mainly effect as oscillation activity at the N2 latency. Finally, a posterior increased power of theta was found for emotional faces.

Original languageEnglish
Pages (from-to)283-294
Number of pages12
JournalJournal of Neuropsychology
Volume1
Issue numberPt 2
DOIs
Publication statusPublished - Sep 2007

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Facial Expression
Evoked Potentials
Electroencephalography
Happiness
Fear
Regression Analysis
Brain
Power (Psychology)

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Cognitive Neuroscience
  • Neuropsychology and Physiological Psychology

Cite this

Event-related oscillations (EROs) and event-related potentials (ERPs) comparison in facial expression recognition. / Balconi, Michela; Pozzoli, Uberto.

In: Journal of Neuropsychology, Vol. 1, No. Pt 2, 09.2007, p. 283-294.

Research output: Contribution to journalArticle

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