Neurons Guide Decisions by Suppressing Alternatives
Summary: A new study reveals how neurons communicate during decision-making, showing that choices activate neuron groups that suppress the neural pathways of other options. This research combines structural, functional, and behavioral analyses to explore the neural circuitry in decision-making, particularly focusing on the posterior parietal cortex’s role as an integrative hub.
The findings highlight that certain excitatory neurons fire based on the decision to turn in a specific direction, activating inhibitory neurons that dampen the activity of neurons associated with the opposite choice. This neural mechanism may help stabilize decisions and prevent second-guessing, offering insights into the brain’s complex decision-making process and potential applications for understanding mental disorders.
Key Facts:
Neural Communication in Decision-Making: The study shows how groups of neurons involved in decision-making work to suppress the pathways of unchosen options, aiding in decision stabilization.
Posterior Parietal Cortex as Decision Hub: Research focused on this brain area demonstrates its crucial role in integrating sensory information to support navigational decisions.
Future Research Directions: The team plans to explore neuronal connections in decision-making across different brain regions, aiming to uncover more connectivity rules that underlie the brain’s decision-making computations.
Source: Harvard
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