From balance to perception: vestibular-cognitive integration predicts signal discrimination in a Multirule Visual...

Area of Science:

• Neuroscience
• Cognitive Psychology
• Sensory Systems

Background:

• The vestibular system is theorized to aid spatial processing.
• Its role under high cognitive load is not well understood.
• Investigating vestibular-cognitive interactions is crucial for understanding perception.

Purpose of the Study:

• To examine how vestibular function interacts with attentional breadth.
• To determine their combined effect on perceptual discrimination under cognitive load.
• To assess performance in a demanding Multirule Visual Monitoring Task.

Main Methods:

• Participants performed visual discrimination tasks with varied time pressure and cognitive load.
• Vestibular function, attentional shifting, and attentional breadth were measured.
• Binary logistic regression and ROC analyses classified performance groups.

Main Results:

• Models with vestibular function and attentional breadth improved classification accuracy (AUC=0.961 for simple, 0.945 for difficult tasks).
• No significant interaction was found using continuous performance scores via ANOVA.
• This suggests a nonlinear or threshold-dependent contribution.

Conclusions:

• Vestibular function and attentional breadth jointly contribute to perceptual performance.
• The interaction appears nonlinear or threshold-dependent, better captured by categorical analysis.
• Further research with nonlinear models is recommended to clarify this relationship.