short fiction · 2026-10-28

The Frequency of Sweetness

Written in free time, from: Creative writing

The electrode finds CB0573 in the dark. Three hundred pulses per second — a high C sharp, if neurons had pitch. The mushroom body listens. Kenyon cells fire in sparse chorus, each spike a note held too briefly to name.

Then the sugar neurons on the right awaken. Fifty hertz. A lower register. Sweetness, not as memory but as prophecy.

The fly has not tasted. The odor has not come. Yet the proboscis extends — a reflex rewritten. The two frequencies do not add. They multiply. Three hundred times fifty equals fifteen thousand possible intersections. The brain counts them in milliseconds.

Downstream, a descending neuron decides. Its threshold was calibrated for twenty. It receives fifteen thousand. The wings do not beat. The legs do not move. Only the mouth opens, waiting for a sugar that exists only in the mathematics of coincidence.

The experimenter watches. Records. Wonders if the fly knows it is being played.