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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 effects of the RTI score on functional amygdala activation during decision-making of advice when subjects played the role of the Sender.The y-axis represents β coefficients. R = right hemisphere.
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pone.0137014.g004: The effects of the RTI score on functional amygdala activation during decision-making of advice when subjects played the role of the Sender.The y-axis represents β coefficients. R = right hemisphere.

Mentions: Table 4 shows the results of amygdala activity during decision-making as the Sender. Note that two subjects were excluded from this analysis because they never chose false advice across trials. Our results yielded that the advice choice was not associated with bilateral amygdala activity. In contrast, the effect of the RTI score on amygdala activity (across hemispheres) was significant. Follow-up Spearman correlation indicated that the RTI score was negatively associated with amygdala activity (ρ(8) = −0.76 p < 0.01); when subjects, acting as the Sender, showed higher RTI score, they were likely to exhibit decreased amygdala activity during decision making, regardless of the advice choice or hemisphere (see Fig 4).


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

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

The effects of the RTI score on functional amygdala activation during decision-making of advice when subjects played the role of the Sender.The y-axis represents β coefficients. R = right hemisphere.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0137014.g004: The effects of the RTI score on functional amygdala activation during decision-making of advice when subjects played the role of the Sender.The y-axis represents β coefficients. R = right hemisphere.
Mentions: Table 4 shows the results of amygdala activity during decision-making as the Sender. Note that two subjects were excluded from this analysis because they never chose false advice across trials. Our results yielded that the advice choice was not associated with bilateral amygdala activity. In contrast, the effect of the RTI score on amygdala activity (across hemispheres) was significant. Follow-up Spearman correlation indicated that the RTI score was negatively associated with amygdala activity (ρ(8) = −0.76 p < 0.01); when subjects, acting as the Sender, showed higher RTI score, they were likely to exhibit decreased amygdala activity during decision making, regardless of the advice choice or hemisphere (see Fig 4).

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.