Seong-Hwan Hwang

Computational and causal dissociation in primate striatum during value-guided decision-making

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

Neural geometry efficiently representing abstract form of value and modality in the primate basal ganglia

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.

Distinct representation of cognitive flexibility and habitual stability in the primate putamen, caudate, and ventral striatum

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

Efficient value encoding through convergence of tactile and visual value information in the primate putamen

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

Identifying brain areas for tactile perception through natural finger touch with MR-compatible tactile stimulus delivery system

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