scholarly journals Social decision-making in the brain: Input-state-output modelling reveals patterns of effective connectivity underlying reciprocal choices

2018 ◽  
Vol 40 (2) ◽  
pp. 699-712 ◽  
Author(s):  
Daniel Shaw ◽  
Kristína Czekóová ◽  
Martin Gajdoš ◽  
Rostislav Staněk ◽  
Jiří Špalek ◽  
...  
Keyword(s):  
Decision Making ◽  
Effective Connectivity ◽  
Input State ◽  
Social Decision ◽  
Social Decision Making ◽  
The Brain

scholarly journals Social decision‐making in the brain: Input‐state‐output modelling reveals patterns of effective connectivity underlying reciprocal choices.

2019 ◽  
Author(s):  
Daniel Shaw ◽  
Kristina Czekoova ◽  
Martin Gajdoš ◽  
Rostislav Staněk ◽  
Jiri Spalek ◽  
...  
Keyword(s):  
Decision Making ◽  
Ultimatum Game ◽  
Effective Connectivity ◽  
Brain Regions ◽  
Input State ◽  
Neural Responses ◽  
Social Decision ◽  
Social Decision Making ◽  
The Brain ◽  
Monetary Gain

During social interactions, decision‐making involves mutual reciprocity—each individual's choices are simultaneously a consequence of, and antecedent to those of their interaction partner. Neuroeconomic research has begun to unveil the brain networks underpinning social decision‐making, but we know little about the patterns of neural connectivity within them that give rise to reciprocal choices. To investigate this, the present study measured the behaviour and brain function of pairs of individuals (N = 66) whilst they played multiple rounds of economic exchange comprising an iterated ultimatum game. During these exchanges, both players could attempt to maximise their overall monetary gain by reciprocating their opponent's prior behaviour—they could promote generosity by rewarding it, and/or discourage unfair play through retaliation. By adapting a model of reciprocity from experimental economics, we show that players' choices on each exchange are captured accurately by estimating their expected utility (EU) as a reciprocal reaction to their opponent's prior behaviour. We then demonstrate neural responses that map onto these reciprocal choices in two brain regions implicated in social decision‐making: right anterior insula (AI) and anterior/anterior‐mid cingulate cortex (aMCC). Finally, with behavioural Dynamic Causal Modelling, we identified player‐specific patterns of effective connectivity between these brain regions with which we estimated each player's choices with over 70% accuracy; namely, bidirectional connections between AI and aMCC that are modulated differentially by estimates of EU from our reciprocity model. This input‐state‐output modelling procedure therefore reveals systematic brain–behaviour relationships associated with the reciprocal choices characterising interactive social decision‐making.

scholarly journals Fighting Assessment Triggers Rapid Changes in Activity of the Brain Social Decision-Making Network of Cichlid Fish

2019 ◽  
Vol 13 ◽  
Author(s):  
Olinda Almeida ◽  
Ana S. Félix ◽  
Gonçalo A. Oliveira ◽  
João S. Lopes ◽  
Rui F. Oliveira
Keyword(s):  
Decision Making ◽  
Cichlid Fish ◽  
Social Decision ◽  
Rapid Changes ◽  
Social Decision Making ◽  
The Brain

scholarly journals Social Decision-Making and the Brain: A Comparative Perspective

2017 ◽  
Vol 21 (4) ◽  
pp. 265-276 ◽  
Author(s):  
Sébastien Tremblay ◽  
K.M. Sharika ◽  
Michael L. Platt
Keyword(s):  
Decision Making ◽  
Comparative Perspective ◽  
Social Decision ◽  
Social Decision Making ◽  
The Brain
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