Hippocampal-prefrontal orchestration supports higher-order learning for creative ideation

Area of Science:

• Neuroscience
• Cognitive Science
• Psychology

Background:

• Learning facilitates not only memory but also creative processes.
• The neurocognitive mechanisms linking higher-order learning to creativity are not well understood.

Purpose of the Study:

• To identify brain encoding patterns during creative exemplar-learning that predict subsequent creative output.
• To elucidate the neural basis of how learning supports creation.

Main Methods:

• Verified the facilitative effect of creative exemplar-learning on subsequent creation.
• Identified hippocampal and ventrolateral prefrontal cortex (vlPFC) encoding patterns during learning.
• Utilized representational dimensionality and connectivity analyses.
• Performed cross-phase decoding to link learning representations to creation outcomes.

Main Results:

• Higher subsequent creation (HSC) was associated with reduced hippocampal representational dimensionality and increased hippocampal-vlPFC connectivity.
• These effects were independent of memory performance and consistent across different material types (textual, pictorial).
• Low-dimensional hippocampal and high-dimensional vlPFC representations transferred more effectively in HSC trials.
• vlPFC decoding of HSC vs. LSC relied on low-dimensional hippocampal representations during learning.

Conclusions:

• Hippocampal-vlPFC orchestration abstracts and transfers exemplar information to support creativity.
• This reveals a neurocognitive mechanism for higher-order learning that is distinct from memory acquisition.
• The findings highlight the role of representational abstraction in bridging learning and creative cognition.