Gen 4 moves induction off the forehead entirely. Cortical resonance mapping eliminates the electrode placement problem. The device learns your signal in three nights. By night seven, it knows where you are before you do.
Passive daywear builds a personal cortical resonance profile over the first 72 hours. No calibration session. No electrode gel. Signal quality improves each night.
Gen 4 receives feedback from the resonance map in real time. The cue adapts mid-session rather than relying on a static threshold. The algorithm finds the window, not just the night.
The headband form factor is gone. Gen 4 sits behind the ear, held by cartilage contact. Designed to be worn all day — the device has context before you sleep.
During waking hours, the device monitors baseline physiological signals. By sleep onset, it already knows your stress level, HRV state, and likely REM architecture for the night.
Gen 4 builds a personal integration map — which dream narrative elements your brain uses to absorb the cue. Over weeks, it exploits the gaps rather than targeting the average.
The raw signal stream will be available via BLE for third-party research and community extensions. Documented API. No paywalled features.