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Neural Responses to Truth Telling and Risk Propensity under Asymmetric Information.

Suzuki H, Misaki M, Krueger F, Bodurka J - PLoS ONE (2015)

Bottom Line: Our behavioral results revealed that subjects with recreational high risk tended to choose true advice.Moreover, fMRI results yielded that the choices of true advice were associated with increased cortical activation in the anterior rostral medial and frontopolar prefrontal cortices, middle frontal cortex, temporoparietal junction, and precuneus.In conclusion, our results have implications for how differential functions of the cortical areas may contribute to the neural processing of truth telling.

View Article: PubMed Central - PubMed

Affiliation: Laureate Institute for Brain Research, Tulsa, OK, United States of America.

ABSTRACT
Trust is multi-dimensional because it can be characterized by subjective trust, trust antecedent, and behavioral trust. Previous research has investigated functional brain responses to subjective trust (e.g., a judgment of trustworthiness) or behavioral trust (e.g., decisions to trust) in perfect information, where all relevant information is available to all participants. In contrast, we conducted a novel examination of the patterns of functional brain activity to a trust antecedent, specifically truth telling, in asymmetric information, where one individual has more information than others, with the effect of varying risk propensity. We used functional magnetic resonance imaging (fMRI) and recruited 13 adults, who played the Communication Game, where they served as the "Sender" and chose either truth telling (true advice) or lie telling (false advice) regarding the best payment allocation for their partner. Our behavioral results revealed that subjects with recreational high risk tended to choose true advice. Moreover, fMRI results yielded that the choices of true advice were associated with increased cortical activation in the anterior rostral medial and frontopolar prefrontal cortices, middle frontal cortex, temporoparietal junction, and precuneus. Furthermore, when we specifically evaluated a role of the bilateral amygdala as the region of interest (ROI), decreased amygdala response was associated with high risk propensity, regardless of truth telling or lying. In conclusion, our results have implications for how differential functions of the cortical areas may contribute to the neural processing of truth telling.

No MeSH data available.


The main effects of the total RTI score on functional brain activation when subjects played the role of the Sender.R = right hemisphere; MFC = middle frontal cortex.
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pone.0137014.g003: The main effects of the total RTI score on functional brain activation when subjects played the role of the Sender.R = right hemisphere; MFC = middle frontal cortex.

Mentions: Our LME results of the whole-brain analysis revealed that there were main effects of advice choice, as well as the standardized RTI score, on functional brain activity (see Table 3). Specifically, when subjects served as the Sender and chose true advice, the following brain regions showed increased hemodynamic activity: bilateral anterior rostral medial prefrontal cortex (armPFC), bilateral middle frontal cortex, right temporoparietal junction (TPJ), bilateral frontopolar prefrontal cortex (fpPFC), and right precuneus (see Fig 2). Furthermore, when the subjects exhibited a high RTI score, they showed decreased right middle fronto-cortical activity during decision-making as the Sender (Fig 3). Finally, there was no interaction effect between the advice choice and the RTI score.


Neural Responses to Truth Telling and Risk Propensity under Asymmetric Information.

Suzuki H, Misaki M, Krueger F, Bodurka J - PLoS ONE (2015)

The main effects of the total RTI score on functional brain activation when subjects played the role of the Sender.R = right hemisphere; MFC = middle frontal cortex.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4556667&req=5

pone.0137014.g003: The main effects of the total RTI score on functional brain activation when subjects played the role of the Sender.R = right hemisphere; MFC = middle frontal cortex.
Mentions: Our LME results of the whole-brain analysis revealed that there were main effects of advice choice, as well as the standardized RTI score, on functional brain activity (see Table 3). Specifically, when subjects served as the Sender and chose true advice, the following brain regions showed increased hemodynamic activity: bilateral anterior rostral medial prefrontal cortex (armPFC), bilateral middle frontal cortex, right temporoparietal junction (TPJ), bilateral frontopolar prefrontal cortex (fpPFC), and right precuneus (see Fig 2). Furthermore, when the subjects exhibited a high RTI score, they showed decreased right middle fronto-cortical activity during decision-making as the Sender (Fig 3). Finally, there was no interaction effect between the advice choice and the RTI score.

Bottom Line: Our behavioral results revealed that subjects with recreational high risk tended to choose true advice.Moreover, fMRI results yielded that the choices of true advice were associated with increased cortical activation in the anterior rostral medial and frontopolar prefrontal cortices, middle frontal cortex, temporoparietal junction, and precuneus.In conclusion, our results have implications for how differential functions of the cortical areas may contribute to the neural processing of truth telling.

View Article: PubMed Central - PubMed

Affiliation: Laureate Institute for Brain Research, Tulsa, OK, United States of America.

ABSTRACT
Trust is multi-dimensional because it can be characterized by subjective trust, trust antecedent, and behavioral trust. Previous research has investigated functional brain responses to subjective trust (e.g., a judgment of trustworthiness) or behavioral trust (e.g., decisions to trust) in perfect information, where all relevant information is available to all participants. In contrast, we conducted a novel examination of the patterns of functional brain activity to a trust antecedent, specifically truth telling, in asymmetric information, where one individual has more information than others, with the effect of varying risk propensity. We used functional magnetic resonance imaging (fMRI) and recruited 13 adults, who played the Communication Game, where they served as the "Sender" and chose either truth telling (true advice) or lie telling (false advice) regarding the best payment allocation for their partner. Our behavioral results revealed that subjects with recreational high risk tended to choose true advice. Moreover, fMRI results yielded that the choices of true advice were associated with increased cortical activation in the anterior rostral medial and frontopolar prefrontal cortices, middle frontal cortex, temporoparietal junction, and precuneus. Furthermore, when we specifically evaluated a role of the bilateral amygdala as the region of interest (ROI), decreased amygdala response was associated with high risk propensity, regardless of truth telling or lying. In conclusion, our results have implications for how differential functions of the cortical areas may contribute to the neural processing of truth telling.

No MeSH data available.