Dynamics in the fine structure of schedule-controlled behavior.

The team watched pigeons peck a key under many schedules. They looked inside each gap between food drops. They asked, 'Do birds show tiny, hidden rhythms?'

Sessions ran for months. Computers counted every peck to the millisecond. A math model tested if a simple pulse could copy the birds' pattern.

No matter the schedule, birds kept firing short bursts. Each burst cycled near three pecks per second. The rhythm stayed glued in place for the whole study.

A plain pulser model made the same bumps. Tiny clocks inside the birds, not the outer schedule, built the beat.

Davison et al. (1968) showed that local odds of food, not overall rate, steer how fast birds peck. Palya (1992) zooms deeper and finds speed is chopped into steady ~3 Hz bursts.

Blough (1992) used chaos math to draw the whole FI scallop. Palya (1992) keeps the scallop but adds a hidden metronome inside it. The views pair like map and magnifier.

Kono (2017) moved the lens sideways: longer FIs make pecks drift across the key. Together the three papers say timing rules location, rate, and micro-rhythm alike.

If three-peck-per-second chunks live inside every schedule, your data may hide them too. Count responses in 0.3 s bins during fluency drills. See if bursts line up. When they do, reinforce the burst pause, not the burst top, to shape smoother, steadier work.