C calibrates your session baseline. PAF drives radial speed; χ drives high-frequency turbulence.

Eyes closed: A toggles audio and S cycles bath, forest, and rain; W triggers one capped wake pulse. Broadband rhythm controls pitch across an expanded 40–3200 Hz audible range, cadence, and stereo orbit; its short-term variation widens the orbit and melody. Alertness and entropy morph the tuning from gently tense to consonant. The two-channel div proxy expands/contracts the field and harmony. N5 at Pz plus N4 in the approximate right P4/O2 region add independently artifact-gated posterior vigilance, drowsiness, and exploratory on-task proxies; these are personal trends, not a detector of thoughts. A closed-loop arousal deficit controls brightness, tempo, contrast, and sparse novelty cues; EMG rejection freezes misleading changes. RL learn tests bounded pitch/light combinations for about 20 seconds, credits the recent two-minute action history, and stores learned scores plus summarized clean trial outcomes locally—never raw EEG. Click to hold/resume; Shift-click to reset learning. RL log shows what has worked across sessions. Above the arousal target, alerting flashes recede while attention and complexity reveal more varied orbital families, counter-rotation, and slow precession.