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Related Experiment Video

Updated: Sep 6, 2025

Reducing State Anxiety Using Working Memory Maintenance

Reducing State Anxiety Using Working Memory Maintenance

Published on: July 19, 2017

Controlled audio-visual stimulation for anxiety reduction.

Salvatore Saiu¹, Enrico Grosso²

¹Research Fellow in Computer Science, University of Sassari Computer Vision Laboratory, Sassari, Italy.

Computer Methods and Programs in Biomedicine

|July 3, 2022

Summary

This summary is machine-generated.

A new device combining audio-visual stimuli effectively reduces preoperative anxiety, blood pressure, and heart rate. This non-pharmacological approach offers a promising alternative for patients awaiting surgery.

Keywords:

Anxiety Audio-visual stimulation (AVS)Cross-modal associations Non-pharmacological therapies

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Area of Science:

Psychophysiology
Medical Devices
Non-pharmacological Interventions

Background:

Preoperative anxiety affects 75% of surgical patients, often inadequately managed by drugs.
Auditory and visual stimulation show psychophysiological effects in reducing anxiety.
Existing non-pharmacological anxiety reduction methods are often monomodal.

Purpose of the Study:

Develop a portable, computer-controlled device for simultaneous audio-visual (AV) stimuli administration.
Evaluate the device's efficacy in reducing preoperative anxiety.
Assess psychophysiological parameters related to anxiety reduction.

Main Methods:

An algorithmic approach for real-time sound and color association was implemented.
220 dental surgery patients were tested under four conditions: AV, auditory only, visual only, and control.
Psychophysiological parameters were collected and statistically analyzed.

Main Results:

Combined AV stimulation significantly reduced anxiety levels compared to monomodal stimuli.
Systolic blood pressure and heart rate were significantly lowered by combined AV stimuli.
Statistical analysis confirmed significant differences between experimental conditions.

Conclusions:

The developed AV device is effective in reducing preoperative anxiety.
This technology presents a viable non-pharmacological therapy option.
Further research into cross-modal stimulation models is recommended to maximize patient relaxation and arousal.