Abstract

Anticipation of trust from someone with high social closeness is expected. However, if there is uncertainty in the interaction because a person is a stranger or because he has distrusted us on another occasion, we need to keep track of his behavior and intentions. Using functional Magnetic Resonance Imaging (fMRI) we wanted to find the brain regions related to trust anticipation from partners who differ in their level of social closeness. We designed an experiment in which 30 participants played an adapted trust game with three trustors: A computer, a stranger, and a real friend. We covertly manipulated their decisions in the game, so they trusted 75% of the trials and distrusted in remaining trials. Using a psychophysiological interaction analysis, we found increases in functional coupling between the anterior insula (AIns) and intra parietal sulcus (IPS) during trust anticipation between a high versus low social closeness partner. Also, the right parietal cortex was coupled with the fusiform gyrus (FG) and the inferior/middle temporal gyrus during trust anticipation of a friend versus a stranger. These results suggest that brain regions involved in encoding the intentions of others are recruited during trust anticipation from a friend compared to a stranger.

Details

Title
Social closeness modulates brain dynamics during trust anticipation
Author
Jiménez, Said 1 ; Mercadillo, Roberto E. 2 ; Angeles-Valdez, Diego 3 ; Sánchez-Sosa, Juan J. 4 ; Muñoz-Delgado, Jairo 5 ; Garza-Villarreal, Eduardo A. 3 

 Universidad Nacional Autónoma de México, Facultad de Psicología, Mexico City, Mexico (GRID:grid.9486.3) (ISNI:0000 0001 2159 0001); Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Subdirección de Investigaciones Clínicas, Mexico City, Mexico (GRID:grid.419154.c) (ISNI:0000 0004 1776 9908) 
 Universidad Autónoma Metropolitana-Unidad Iztapalapa, CONACYT, Mexico City, Mexico (GRID:grid.419154.c) 
 Universidad Nacional Autonoma de Mexico (UNAM) Campus Juriquilla, Laboratorio B-03, Instituto de Neurobiología, Santiago de Querétaro, México (GRID:grid.9486.3) (ISNI:0000 0001 2159 0001) 
 Universidad Nacional Autónoma de México, Facultad de Psicología, Mexico City, Mexico (GRID:grid.9486.3) (ISNI:0000 0001 2159 0001) 
 Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Laboratorio de Cronobiología y Etología Humana, Mexico City, Mexico (GRID:grid.419154.c) (ISNI:0000 0004 1776 9908) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2719257488
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.