Does the pupil show a visible, involuntary response when a tone plays — as an objective cross-check alongside a subjective "I heard it" button press? This prototype doesn't try to answer that yet. It just plays a tone on Device A, marks that exact moment on Device B's live eye-tracking graph, and lets us LOOK at whether anything real shows up. Nothing about this is validated or diagnostic — this is a first data-collection pass.
Connection
Not connected.
Which device is this?
Device A plays the tone. Device B watches the eye.
🔗 Test connection first
Before anything about tone, camera, or mic — just check that the two devices can actually talk to each other over the relay.
No ping sent or received yet.
Device A — Tone
Ready.
Device B — Eye Tracking
Quick check first
Test each piece on its own before starting the full tracking session — much easier to spot exactly what's wrong, if anything.
Gold vertical lines = a tone played (Device A's software timestamp). Yellow line = REAL audio level captured by Device B's own microphone — the actual verified acoustic arrival, not just a software timestamp. Faint blue = raw pupil/blink signal. Dashed white = smoothed steady-state baseline. Red dots = a statistically significant deviation, but NOT within the real 21-350ms research window for a genuine startle response. Green dots = a deviation that also falls within that precise window — a real candidate for a genuine sound-triggered reflex, not coincidence.