Anterior Cingulate Cortex Lesions Abolish Budget Effects on Effort-Based Decision-Making in Rat Consumers

Area of Science:

• Neuroscience
• Behavioral Economics
• Decision-Making

Background:

• Demand theory analyzes consumer choices under budget constraints.
• Rats exhibit different demand elasticities under compensated versus uncompensated budget conditions.
• The role of the anterior cingulate cortex (ACC) in these budget effects is unknown.

Purpose of the Study:

• To investigate if the anterior cingulate cortex (ACC) is necessary for budget effects on demand elasticity in rats.
• To determine if ACC is involved in computing purchasing power within cost-benefit analyses.

Main Methods:

• Rats performed an effort-based task manipulating reward prices and budget.
• Excitotoxic or sham lesions were applied to the ACC.
• Demand for rewards (vanilla/chocolate) was measured under compensated and uncompensated budget conditions.

Main Results:

• Sham-lesioned rats showed pronounced demand adjustments with uncompensated budgets.
• ACC-lesioned rats failed to exhibit this additional budget effect.
• ACC-lesioned rats did not maximize utility, indicating deficits in strategic adaptation.

Conclusions:

• ACC integrity is essential for considering purchasing power in cost-benefit computations.
• The ACC plays a novel role in economic decision-making by integrating budget constraints.
• These findings highlight ACC's importance in effort-based decision-making and adaptive choice strategies.