Hyoung F. Kim

This study identifies a rostral-caudal functional organization in the subthalamic nucleus (STN) that supports flexible value updating and habitual behavior, revealing distinct roles for STN subregions in decision-making.

This study shows that macaque monkeys develop habitual manual choices toward previously rewarded objects, driven by learned value and spatial preferences, with reaching habits persisting without reward and showing shorter latencies than value-deliberative tasks.

This paper introduces a modular cranial window for long-term optical imaging in awake macaques, enabling maintainable access and reducing tissue degradation.

The paper shows primate striatal subregions have dissociable, modality-specific roles in value-guided decisions, with neural geometry-behavior coupling determining behavioral control.

The paper shows that bimodal value-coding neurons in the primate putamen maintain both value and modality information in an efficient low-dimensional representation, supporting confident decision-making.

The paper identifies distinct roles of rostral and ventral striatal regions in cognitive flexibility and habitual stability during reversal learning.

The paper shows that primate putamen neurons combine tactile and visual value information, improving encoding efficiency while retaining modality details.

This study develops a MR-compatible tactile stimulus delivery system to investigate brain areas involved in tactile perception during natural finger touch.