Auditory cueing facilitates temporospatial accuracy of sequential movements

Area of Science:

• Motor Control
• Human Movement Science
• Sensory Cueing

Background:

• Effective goal-directed actions depend on precise temporal and spatial accuracy.
• Auditory cues are known to improve upper-limb movement timing.
• Multisensory (audiovisual) cueing has also shown benefits for temporospatial motor control, creating uncertainty about the specific benefits of adding visual to auditory cues.

Purpose of the Study:

• To investigate the impact of auditory, visual, and audiovisual cueing on temporospatial errors in sequential upper-limb movements.
• To determine if combined audiovisual cueing offers superior benefits over unimodal cueing for motor control.
• To compare the effectiveness of auditory versus visual cueing in improving movement timing accuracy.

Main Methods:

• A sequential pointing task was employed with 18 participants.
• Movements involved short, intermediate, and large amplitudes towards five targets.
• Participants received isochronous auditory, visual, or audiovisual priming cues to guide movement duration, and delta movement time errors (ΔMTE) were calculated.

Main Results:

• Unimodal auditory cueing significantly reduced ΔMTE compared to visual cueing, particularly for intermediate movement amplitudes.
• Auditory cueing demonstrated a beneficial impact on visuomotor control.
• No significant improvements in temporospatial error were observed for the multisensory audiovisual cueing condition.

Conclusions:

• Unimodal auditory cueing is more effective than visual cueing for enhancing the temporal accuracy of sequential upper-limb movements.
• Adding visual information to auditory cues (audiovisual cueing) does not further improve temporospatial motor control in this task.
• These findings underscore the importance of auditory sensory information for precise visuomotor control.