EEG potentials associated with artificial grammar learning in the primate brain

•First combined EEG and Artificial Grammar (AG) learning study in nonhuman animals.•Early and late frontal potentials modulated in response to violations of the AG sequencing relationships in the primate brain.•Informative similarities and differences are noted in relation to reported human EEG pote...

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Veröffentlicht in:Brain and language 2015-09, Vol.148, p.74-80
Hauptverfasser: Attaheri, Adam, Kikuchi, Yukiko, Milne, Alice E., Wilson, Benjamin, Alter, Kai, Petkov, Christopher I.
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Sprache:eng
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Zusammenfassung:•First combined EEG and Artificial Grammar (AG) learning study in nonhuman animals.•Early and late frontal potentials modulated in response to violations of the AG sequencing relationships in the primate brain.•Informative similarities and differences are noted in relation to reported human EEG potentials associated with AG learning. Electroencephalography (EEG) has identified human brain potentials elicited by Artificial Grammar (AG) learning paradigms, which present participants with rule-based sequences of stimuli. Nonhuman animals are sensitive to certain AGs; therefore, evaluating which EEG Event Related Potentials (ERPs) are associated with AG learning in nonhuman animals could identify evolutionarily conserved processes. We recorded EEG potentials during an auditory AG learning experiment in two Rhesus macaques. The animals were first exposed to sequences of nonsense words generated by the AG. Then surface-based ERPs were recorded in response to sequences that were ‘consistent’ with the AG and ‘violation’ sequences containing illegal transitions. The AG violations strongly modulated an early component, potentially homologous to the Mismatch Negativity (mMMN), a P200 and a late frontal positivity (P500). The macaque P500 is similar in polarity and time of occurrence to a late EEG positivity reported in human AG learning studies but might differ in functional role.
ISSN:0093-934X
1090-2155
DOI:10.1016/j.bandl.2014.11.006