Effect of Annoying Sounds on Postural Control

Area of Science:

• Biomechanics
• Human Sensory Systems
• Neuroscience

Background:

• Postural control is crucial for stability and relies on sensory integration.
• Auditory stimuli, particularly irritating sounds, can influence cognitive processes and motor control.
• Understanding the interplay between auditory distractions and balance is vital for various populations.

Purpose of the Study:

• To investigate the effects of irritating sounds on postural control in healthy adults.
• To analyze linear and nonlinear balance parameters under different sensory conditions.
• To explore potential gender differences in response to auditory stimuli and their impact on balance.

Main Methods:

• Thirty-four healthy adults (17 males, 17 females) performed bipedal standing balance tests.
• Tests included eyes-open (EO), eyes-closed (EC), and eyes-closed with irritating sounds (ECS) conditions.
• Balance data were analyzed using linear and nonlinear parameters; sound sensitivity was assessed via questionnaire.

Main Results:

• Women reported significantly higher sensitivity to irritating sounds compared to men.
• No significant gender differences in overall postural control were found, except for increased anterior-posterior irregularity in females during ECS.
• A moderate correlation existed between balance irregularity (SampEn) and sound sensitivity scores.

Conclusions:

• Irritating sounds can increase postural control irregularity, particularly when visual input is absent.
• Sensory stimuli, attention, and balance maintenance are intricately linked.
• Findings suggest that auditory distractions may pose a greater challenge to balance in sensitive individuals, especially women.