Early and late signals of unexpected reward contribute to low extraversion and high disinhibition, respectively.

ABSTRACT: Like socio-economic status and cognitive abilities, personality traits predict important life outcomes. Traits that reflect unusually low or high approach motivations, such as low extraversion and high disinhibition, are linked to various forms of mental disorder. Similarly, the dopamine system is theoretically linked to approach motivation traits and to various forms of mental disorder. Identifying neural contributions to extremes of such traits should map to neural sources of psychopathology, with dopamine a prime candidate. Notably, dopamine cells fire in response to unexpected reward, which suggests that the size of non-invasive, scalp-recorded potentials evoked by unexpected reward could reflect sensitivity in approach motivation traits. Here, we evaluated the validity of evoked elect

SUBMITTER: Neo PS 

PROVIDER: S-EPMC8645529 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature