title: Auditory event-related potentials over medial frontal electrodes express both negative and positive prediction errors.
abstract: While the neuronal activation in the medial frontal cortex is thought to reflect higher-order evaluation processes of reward prediction errors when a reward deviates from our expectation, there is increasing evidence that the medial frontal activity might express prediction errors in general. However, given that several studies examined the medial frontal event-related potentials (ERPs) by comparing signals triggered by different stimuli and different anticipations, it remains an open question whether the medial frontal signals are sensitive to the valence of prediction errors. Here we orthogonally manipulated expectation magnitude (i.e., large/small expectation) and expectation confirmation (i.e., fulfilled/violated expectation) in a target detection task with rewards. We found that the medial frontal ERPs were more negative-going for unexpected outcomes in comparison with expected outcomes, regardless of whether a large/small reward was expected. The result supports the idea that the medial frontal signals express prediction errors in general regardless of their valence.
authors: Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; CNRS (Laboratoire Psychologie de la Perception, UMR 8242), 75006 Paris, France; Department of Educational Psychology and Counselling, National Taiwan Normal University, 10610 Taipei, Taiwan. Electronic address: yi-fang.hsu@cantab.net.
authors: Yi-Fang
authors: YF
authors: Hsu
authors: Department of Psychology, University of Jyväskylä, 40014 Jyväskylä, Finland. Electronic address: jarmo.a.hamalainen@jyu.fi.
authors: Jarmo A
authors: JA
authors: Hämäläinen
authors: Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; CNRS (Laboratoire Psychologie de la Perception, UMR 8242), 75006 Paris, France. Electronic address: karolina.moutsopoulou@parisdescartes.fr.
authors: Karolina
authors: K
authors: Moutsopoulou
authors: Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; CNRS (Laboratoire Psychologie de la Perception, UMR 8242), 75006 Paris, France. Electronic address: Florian.waszak@parisdescartes.fr.
authors: Florian
authors: F
authors: Waszak
mesh_terms: D000328:Adult; D004566:Electrodes; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005145:Face; D005149:Facial Expression; D005260:Female; D005625:Frontal Lobe / Q000502:physiology*; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011597:Psychomotor Performance; D012201:Reward
keywords: Electroencephalography (EEG); Medial frontal event-related potentials (ERPs); Prediction errors