Neural encoding of competitive effort in the anterior cingulate cortex
Kristin L Hillman1, David K Bilkey
1Department of Psychology, University of Otago, Dunedin, New Zealand. khillman@psy.otago.ac.nz
Nature Neuroscience
|August 14, 2012
Summary
Animals compete for resources, making cost-benefit decisions. The anterior cingulate cortex (ACC) may encode competitive effort, a crucial aspect of social decision-making in nature.
Area of Science:
- Neuroscience
- Behavioral Ecology
- Decision Neuroscience
Background:
- Social animals frequently compete for limited resources, necessitating cost-benefit analyses for competitive effort.
- The anterior cingulate cortex (ACC) is known for its role in cost-benefit decision-making, but its function in competitive contexts is unexplored.
Purpose of the Study:
- To investigate the neural mechanisms underlying cost-benefit decisions in competitive foraging.
- To determine the role of the anterior cingulate cortex (ACC) in encoding competitive effort.
Main Methods:
- Recorded neural activity of ACC neurons in rats performing a competitive foraging choice task.
- Utilized inter- and intrasession manipulations to isolate factors influencing neural firing patterns.
Main Results:
- A majority of ACC neurons showed heightened and differential firing related to competitive choice options.
- Differential firing patterns were not solely due to effort or reward, but reflected net utility assessments.
- ACC neural activity appears to encode the overall value of competitive choices.
Conclusions:
- The anterior cingulate cortex (ACC) plays a significant role in evaluating and encoding competitive effort.
- These findings extend our understanding of ACC function to social decision-making involving competition.
- The study highlights the neural basis of a prevalent behavior in the natural world.
