In-vehicle multi-sensory experiences can reduce mental stress

Area of Science:

• Psychology
• Neuroscience
• Human-Computer Interaction

Background:

• Daily stress negatively impacts mental and physical health.
• Existing stress-relief methods often lack accessibility due to time, training, or environmental needs.
• Personal vehicles represent an underutilized space for passive stress recovery.

Purpose of the Study:

• To evaluate a multi-sensory in-vehicle relaxation system for stress reduction.
• To assess the impact of scent as part of the multi-sensory experience.
• To determine the feasibility and participant acceptance of in-vehicle relaxation.

Main Methods:

• Forty-eight participants underwent a stress-inducing cognitive task.
• Three conditions were tested: control, multi-sensory relaxation without scent, and multi-sensory relaxation with scent.
• Physiological data (EEG, ECG) and subjective stress ratings were collected.

Main Results:

• Both multi-sensory relaxation conditions significantly reduced stress compared to the control.
• Physiological markers showed increased parasympathetic activity (increased RR, RMSSD, alpha/beta ratio).
• 98% preferred the relaxation experience, and 62% would use it regularly.

Conclusions:

• Multi-sensory relaxation, with or without scent, is effective in reducing acute stress.
• In-vehicle relaxation systems offer a practical and accessible stress management solution.
• Participant preference and willingness to use suggest strong potential for this technology.