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The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
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Do you make a difference? Social context in a betting task.

Norberto Eiji Nawa1, Eric E Nelson, Daniel S Pine

  • 1ATR Cognitive Information Science Labs, 2-2-2 Hikari-dai, Keihanna Science City, Kyoto 619-0288, Japan. eiji@atr.jp

Social Cognitive and Affective Neuroscience
|November 19, 2008
PubMed
Summary
This summary is machine-generated.

Social context significantly impacts motivated behavior. Brain imaging reveals the amygdala and prefrontal cortex show increased activity in social settings, while the ventral striatum is more active when alone.

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Area of Science:

  • Neuroscience
  • Social Psychology
  • Cognitive Science

Background:

  • Human motivated behavior is heavily influenced by social context.
  • The triadic model, involving the amygdala, medial prefrontal cortex (mPFC), and striatum, is key to regulating motivated behavior.

Purpose of the Study:

  • To investigate how social context modulates the neural systems regulating motivated behavior.
  • To compare brain activity during a monetary betting task in social versus nonsocial conditions.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to study 19 healthy subjects.
  • Subjects performed a monetary betting task under two conditions: social (with a peer) and nonsocial (alone).
  • Behavioral performance and blood-oxygen-level-dependent (BOLD) signal changes were analyzed.

Main Results:

  • Behavioral performance showed no significant difference between social and nonsocial trials.
  • BOLD signal changes during betting were significantly greater in the amygdala bilaterally and the right dorsolateral prefrontal cortex in the social condition.
  • Conversely, activation was greater in the ventral striatum during the nonsocial condition compared to the social condition.

Conclusions:

  • Social context dynamically modulates neural systems involved in motivated behavior.
  • The brain adjusts motivated behavior based on the presence of conspecifics, indicated by differential activation in key brain regions.