Simultaneous event-based and emergent timing: synchronization, continuation, and phase correction.

Area of Science:

• Cognitive psychology
• Neuroscience
• Human motor control

Background:

• Rhythmic tapping is often considered event-based timing, while circle drawing is proposed as emergent timing.
• Previous research suggested circle drawing is difficult to synchronize and shows minimal phase correction.

Purpose of the Study:

• To investigate the timing characteristics of rhythmic tapping and circle drawing.
• To examine if these two distinct timing processes can coexist during simultaneous performance.
• To assess phase correction capabilities in circle drawing.

Main Methods:

• Musically trained participants performed rhythmic tapping (left hand) and circle drawing (right hand) individually and simultaneously.
• Tasks were performed synchronized to a metronome and self-paced.
• Experiment 2 involved metronome phase perturbations to assess error correction.

Main Results:

• Circle drawing demonstrated reliable synchronization, albeit with greater variability than tapping.
• Circle drawing exhibited a clear, gradually evolving phase-correction response following perturbations.
• Simultaneous performance of tapping and drawing showed mutual influence while retaining distinct timing characteristics.

Conclusions:

• Event-based and emergent timing processes can coexist within a dual-task framework.
• Circle drawing possesses robust synchronization and phase-correction abilities.
• Both timing modes likely coexist within individual tasks, with one often being dominant.