Housefly compound eyes achieve ultrafast, hyperacute vision during high-speed saccadic behaviors through a morphodynamic neural superposition system in which photoreceptor microsaccades dynamically reshape receptive fields and photoreceptor-LMC synapses exhibit synaptic high-frequency jumping—a novel mechanism that shifts neural transmission toward higher frequencies (up to ~1,000 Hz), eliminates synaptic delays, enables information transfer rates exceeding 4,100 bits/s, resolves moving objects below the diffraction limit, and supports voluntary visually-guided behaviors within 13-20 ms by transforming self-generated motion into temporally-precise predictive encoding.

During high-speed behaviour, animals must synchronise perception and action despite rapid environmental and self-generated motion. How neural systems achieve such precision remains unclear. Here we show how the housefly (Musca domestica) maintains visual accuracy during fast motion. Using intracellular and photomechanical recordings during saccade-like stimulation, we traced information flow from photoreceptors to large monopolar cells (LMCs). Visual neurons achieved record-high information sampling (∼2,500 bits·s-1) and synaptic transmission (∼4,100 bits·s-1), far exceeding previous estimates. We identify a previously unknown mechanism - synaptic high-frequency jumping - in which photoreceptor-LMC synapses dynamically shift transmission toward higher frequencies during saccades, extending visual bandwidth to ∼1,000 Hz, effectively eliminating synaptic delays, and quadrupling classical flicker-fusion limits (∼230 Hz). Behavioural experiments show flies respond synchronously within ∼13-20 ms, even before photoreceptor responses peak. A biophysically realistic model reveals how photomechanical-stochastic-refractory quantal sampling co-adapts with saccadic behaviour: through self-motion, flies efficiently translate image motion into temporally-precise, predictive high-speed vision.