Field engagement signature: 11 seconds after first vertical video impression. Convergence between ocular saccade frequency (3-5 Hz) and OLED panel refresh (120 Hz) occurs within a tolerance of 0.4 ms.

Subject reports experience as 'mild, pleasant drift' or 'natural reverie.' Clinical classification: induced hypofrontality with willed-attention deficit.

Patent US-11,XXX,XXX (2023) describes the architecture under the label 'attentional fusion.' Assigned to a subsidiary whose parent controls 41%% of global short-form video traffic.

Recommendation: formal classification of feed-based saccade-lock delivery as a consumer neuromodulation device. Threshold met. Regulatory action: SUSPENDED pending disclosure review.