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Evaluation of a VR system for Pain Management using binaural acoustic stimulation

机译：使用双耳声学刺激评估用于疼痛管理的VR系统

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The system proposed is oriented to evaluate the pain perceived by the user under a high controlled virtual reality environment (VR). AVR system is an implementation of a virtual world that the user perceives as the real one. The sensation of immersion affects the stimulus(visual, acoustic and haptic) perceived by the user and it is able to promote change in the brain waves power and produce an activation of Autonomic Nervous System (ANS). The Electro-Dermal Activity (EDA) allow measuring the electrical properties of the skin by the sweat activity. This work proposes a VR environment combined with binaural beats (binaural sounds) and visual stimulus to evaluate the perception that the user has and comparing their sensation with real physiological data. It is believed that the use of different binaural beats in a long period of time can help patients to induce a relaxation state (mood) and consequently modulate the perception to pain. In this study we show two experiments. The first one applies 8 types of acoustic stimulus (4 binaural and 4 monaural) in a standard simple VR scenario and we propose the end users to select the experimented feeling they felt in any case, in parallel using the Empatica wristband we contrast the subjective users answers with physiological values given by the device. In the second experiment, an immersive environment based on the whole VR application is proposed for control and real users to evaluate chronic pain. The users are immersed in three VR equal scenarios but with random sound stimulation. With the results obtained, we can conclude that binaural beats work better than non-binaural beats if we talk about relaxation and meditation.
机译：提出的系统旨在评估用户在高度受控的虚拟现实环境（VR）下感知到的痛苦。 AVR系统是虚拟世界的一种实现，用户将其视为真实世界。沉浸感会影响用户感知的刺激（视觉，听觉和触觉），并且能够促进脑波功率的变化并产生自主神经系统（ANS）的激活。电皮肤活性（EDA）可以通过汗液活性来测量皮肤的电学性质。这项工作提出了一种结合双耳节拍（双耳声音）和视觉刺激的VR环境，以评估用户的感知并将其感觉与真实的生理数据进行比较。可以相信，长时间使用不同的双耳节拍可以帮助患者诱发放松状态（情绪），从而调节对疼痛的知觉。在这项研究中，我们显示了两个实验。第一个在标准的简单VR场景中应用了8种类型的声音刺激（4个双耳和4个单耳），我们建议最终用户选择他们在任何情况下都能感觉到的实验感觉，同时使用Empatica腕带与主观用户进行对比用设备给出的生理值回答。在第二个实验中，提出了一个基于整个VR应用程序的沉浸式环境，用于控制和实际用户评估慢性疼痛。用户沉浸在三个VR相等的场景中，但具有随机的声音刺激。根据获得的结果，我们可以得出结论，如果我们谈论放松和冥想，双耳节拍比非双耳节拍效果更好。

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