Technology

GDCT: a closed-loop platform for the brain's clearance pathways

GDCT (Glymphatic Dynamics & Clearance Therapy) is a non-invasive, closed-loop stimulation platform built around Transcranial RF Pulse Modulation (tRFPM), combined with real-time bio-impedance feedback and our own algorithm, BAIS. Rather than directly clearing waste the way an antibody or drug would, it focuses on opening the brain's own clearance pathways — the glymphatic system, cerebrospinal fluid outflow, and the meningeal lymphatic vessels.

Glymphatic activation

The glymphatic system, the brain's waste-clearance pathway, is known to be most active during sleep. We're experimentally exploring whether this flow can also be induced while awake.

Phase-response stimulation (WIKC)

Rather than a single fixed frequency, we're studying phase-response patterns tuned to an individual's neurovascular rhythm, aiming to induce sleep-specific K-complex-like slow waves in real time while awake.

Real-time bio-impedance feedback

Scalp and tissue impedance is measured in real time and fed into a closed loop that automatically adjusts stimulation intensity, with exposure limits enforced at the hardware level.

BAIS algorithm

Our own algorithm integrates EEG, transcranial Doppler (TCD), and heart-rate variability (HRV) into a patient-level digital twin, used to titrate stimulation and interpret responses.

This platform builds on foundational research carried out at the Korea Institute of Quantum Brain & Neural Sciences (KIQBNS) by founder Kim Kwang-woo, who has studied the K-complex independently for 40 years. Stimulation intensity is limited at the hardware level to stay within ICNIRP/IEEE SAR guidelines by design. That said, current results represent an early feasibility study on a small number of subjects, and further clinical research is planned to confirm reproducibility and individual variation.
Future applications

Areas under future consideration

These are conditions in which impaired glymphatic and cerebrospinal fluid circulation is believed to play a role in pathophysiology. None of these are confirmed indications; we plan to evaluate applicability through future clinical research, one step at a time.

Traumatic brain injury (TBI) & PTSD

Stroke

Sleep disorders

Dementia