Preliminary findings suggest that learning is accompanied by frequency-specific changes in brain communication and provide new insights into the neural basis of adaptive decision-making in birds.
Abstract
Simple Summary Animals adapt their decisions by combining current information with previous experience. During learning, they may shift from flexible strategies based on environmental structure toward more stable choices guided by learned values. In this study, pigeons performed a sequential decision-making task while neural activity was recorded from the hippocampus and striatum. Behavioral modeling showed a gradual shift toward value-guided choice, accompanied by changes in communication between these brain regions. In particular, gamma-band information flow from the hippocampus to the striatum decreased as task performance became more stable. These preliminary findings suggest that learning is accompanied by frequency-specific changes in brain communication and provide new insights into the neural basis of adaptive decision-making in birds.
How neural representations carrying similar information across brain regions are translated into behavioral control remains a fundamental question in neuroscience. In the primate striatum, whether subregions make overlapping or dissociable computational and causal contributions to value-guided decisions is unresolved....
Ji-Woo Lee, Min-Seo Kim, S. Hwang et al.· bioRxiv· 0 citations
Flexible behavior depends on neural mechanisms that integrate memory with ongoing motivational demands. Studies have revealed dopamine (DA) to have an essential role in mediating memory, behavioral flexibility, and decision-making, yet the dopaminergic contributions within prefrontal-hippocampal circuits remain poorly...
Albit Caban-Murillo, Michelle Surets, Celine Chien et al.· Current Biology· 0 citations
It is proposed that PFC beta oscillations and hippocampal SWRs are complementary markers of experience-dependent change in hippocampal–neocortical networks during learning, and develop gradually as learning occurs.
Sameera Shridhar, Zachary M. Leveroni, Nan Zhou et al.· eNeuro· 0 citations
It is indicated that LC inputs to the hippocampus preferentially facilitate spatial memory updating rather than uniformly enhancing spatial learning, and a complementary framework for quantifying the organization of radial-maze trajectories is introduced.
It is suggested that medial prefrontal cortical (mPFC) implements a default strategy based on prior knowledge, which actively hinders the expression of more efficient strategies, and a decentralized multiexpert competition model best predicts behavior and causal perturbations.
Kai Lu, K. Wong, Cheng Yang et al.· Science Advances· 1 citation
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