title: Post-response βγ power predicts the degree of choice-based learning in internally guided decision-making.
abstract: Choosing an option increases a person's preference for that option. This phenomenon, called choice-based learning (CBL), has been investigated separately in the contexts of internally guided decision-making (IDM, e.g., preference judgment), for which no objectively correct answer exists, and externally guided decision making (EDM, e.g., perceptual decision making), for which one objectively correct answer exists. For the present study, we compared decision making of these two types to examine differences of underlying neural processes of CBL. As IDM and EDM tasks, occupation preference judgment and salary judgment were used, respectively. To compare CBL for the two types of decision making, we developed a novel measurement of CBL: decision consistency. When CBL occurs, decision consistency is higher in the last-half trials than in first-half trials. Electroencephalography (EEG) data have demonstrated that the change of decision consistency is positively correlated with the fronto-central beta-gamma power after response in the first-half trials for IDM, but not for EDM. Those results demonstrate for the first time the difference of CBL between IDM and EDM. The fronto-central beta-gamma power is expected to reflect a key process of CBL, specifically for IDM.
authors: Department of Psychology, Graduate School of Education, Hiroshima University, Hiroshima, Japan.
authors: Takashi
authors: T
authors: Nakao
authors: Department of Psychiatry and Neurosciences, Institute of Biomedical &Health Sciences, Hiroshima University, Hiroshima, Japan.|Center of KANSEI Innovation, Hiroshima University, Hiroshima, Japan.
authors: Noriaki
authors: N
authors: Kanayama
authors: Department of Psychology, Graduate School of Environment, Nagoya University, Nagoya, Aichi, Japan.
authors: Kentaro
authors: K
authors: Katahira
authors: Faculty of Education, Hiroshima University, Hiroshima, Japan.
authors: Misaki
authors: M
authors: Odani
authors: Faculty of Education, Hiroshima University, Hiroshima, Japan.
authors: Yosuke
authors: Y
authors: Ito
authors: Faculty of Education, Hiroshima University, Hiroshima, Japan.
authors: Yuki
authors: Y
authors: Hirata
authors: Faculty of Education, Hiroshima University, Hiroshima, Japan.
authors: Reika
authors: R
authors: Nasuno
authors: Faculty of Education, Hiroshima University, Hiroshima, Japan.
authors: Hanako
authors: H
authors: Ozaki
authors: Faculty of Education, Hiroshima University, Hiroshima, Japan.
authors: Ryosuke
authors: R
authors: Hiramoto
authors: Department of Psychology, Graduate School of Education, Hiroshima University, Hiroshima, Japan.
authors: Makoto
authors: M
authors: Miyatani
authors: Institute of Mental Health Research, University of Ottawa, Ottawa, Canada.
authors: Georg
authors: G
authors: Northoff
mesh_terms: D000293:Adolescent; D000328:Adult; D002755:Choice Behavior / Q000502:physiology*; D000066491:Clinical Decision-Making; D004569:Electroencephalography; D005260:Female; D006801:Humans; D007858:Learning / Q000502:physiology*; D008297:Male; D011930:Reaction Time / Q000502:physiology*; D055815:Young Adult