Functional connectivity between anterior cingulate cortex and orbitofrontal cortex during value-based decision
Zahra Fatahi1, Abbas Haghparast1, Abbas Khani2
1Neuroscience Research Centre, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Neural synchronization between the anterior cingulate cortex (ACC) and orbitofrontal cortex (OFC) in low frequencies is crucial for value-based decision making. This brain communication is vital when choosing higher rewards.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Decision Making Research
Background:
- The anterior cingulate cortex (ACC) and orbitofrontal cortex (OFC) play critical roles in reinforcement-guided decision making.
- Understanding the functional connectivity between these regions is key to deciphering value-based choices.
Purpose of the Study:
- To investigate if neural synchronization between the ACC and OFC is a necessary mechanism for value-based decision making.
- To examine the role of functional connectivity, specifically coherence, in mediating choices involving differential rewards and costs.
Main Methods:
- Simultaneous local field potential (LFP) recordings from the ACC and OFC in rats.
- Utilized a T-maze task with varying reward magnitudes (large vs. small) and waiting times (long vs. short).
- Analyzed neural synchronization in theta/low beta (4-20 Hz) and high-gamma (80-100 Hz) frequency bands.
Main Results:
- Task-dependent neural synchronization in the theta/low beta frequency bands was observed between the ACC and OFC when rats selected higher rewards.
- This low-frequency synchronization was significantly reduced when rats chose lower rewards or performed the task passively.
- High-gamma synchrony was present but not modulated by the animals' decision-making process.
Conclusions:
- Neural synchronization in the low-frequency range (theta/low beta) between the ACC and OFC is a necessary neural mechanism for value-based decision making.
- This synchronization specifically supports choices favoring higher rewards over lower ones.
- The findings highlight the importance of ACC-OFC communication for adaptive decision-making strategies.
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