DASPS database
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Anxiety affects human capabilities and behavior as much as it affects productivity and quality of life. It can be considered as the main cause of depression and suicide. Anxious states are easily detectable by humans due to their acquired cognition, humans interpret the interlocutor’s tone of speech, gesture, facial expressions and recognize their mental state. There is a need for non-invasive reliable techniques that perform the complex task of anxiety detection. DASPS database contains recorded Electroencephalogram (EEG) signals of 23 participants during anxiety elicitation by means of face-to-face psychological stimuli.DASPS mean to create a starting point for new researches in the field of anxiety detection.Neuro headset setup:The award winning EMOTIV EPOC+ is designed for scalable and contextual human brain research and provides access to professional grade brain data with a quick and easy to use design.Emotiv Epoc have 14 (+2 references) sensors placed at this locations: AF3, AF4, F3, F4, FC5, FC6, F7, F8, T7, T8, P7, P8, O1, O2 with a sampling rate of 128 SPS (2048 Hz internal) and a resolution of 14 bits 1 LSB = 0.51μV. Emotiv Epoc is a wireless device with 2.4GHz band.Stimulation Conditions:The recording is done during the annual workshop of Research Groups in Intelligent Machines Lab. In an isolated place, participants were asked to conduct the experiment individually in the presence of the psychotherapist.Participants were asked to minimize eyes blinks and body gestures in order to record signals with minimum artifacts as possible.Experimental Protocol:The participant is prepared to start the experiment, with closed eyes and minimizing gesture and speech. The psychotherapist starts by reciting the first situation and helps the subject imagining it. This phase is divided into two stages: recitation by the psychotherapist for the first 15 seconds and Recall by the subject for the last 15 seconds.When time is over, the subject is asked to rate how he felt during stimulation using the Self Assessment Manikin (SAM). It has two rows for rating: Valence and Arousal. This trial is repeated until the sixth situation. At the end of the experiment, some items from HAM-A are re-evaluated by the psychotherapist to adjust the participant’s anxiety level.Database contents:The database contains .edf files of the raw EEG data collected from the 23 participants. Raw data and preprocessed data stored on .mat format are also provided in this database.We provided a matlab script for the segmentation of each EEG signal into 6 segments corresponding to the 6 situations. All documents and papers that uses the Database for Anxious States based on a Psychological Stimulation (DASPS database) will acknowledge the use of the database by including an appropriate citation to the following:[1]: Asma Baghdadi, Yassine Aribi, Rahma Fourati, Najla Halouani, Patrick Siarry, and Adel M. Alimi. "DASPS: A Database for Anxious States based on a Psychological Stimulation." arXiv preprint arXiv:1901.02942 (2019).[2]: Asma Baghdadi, Yassine Aribi, Rahma Fourati, Najla Halouani, Patrick Siarry, and Adel Alimi. "Psychological stimulation for anxious states detection based on EEG-related features." Journal of Ambient Intelligence and Humanized Computing (2020): 1-15.
焦虑对人类能力与行为的影响，与其对生产力与生活质量的影响不相上下，且可被视为抑郁与自杀的主要诱因。由于人类具备后天习得的认知能力，可通过解读对话者的语调、肢体动作与面部表情识别其精神状态，因此焦虑状态易于被人类察觉。在此背景下，亟需开发非侵入式且可靠的技术，以完成焦虑检测这一复杂任务。 焦虑状态检测数据集（DASPS Database）收录了23名受试者在接受面对面心理刺激以诱发焦虑状态期间采集的脑电图（Electroencephalogram，EEG）信号，旨在为焦虑检测领域的新兴研究提供基础起点。 神经头戴设备设置： 本次实验采用获奖产品EMOTIV EPOC+头戴设备，其专为可扩展且适配场景的人类脑科学研究设计，凭借简洁易用的操作界面，可获取专业级别的脑电数据。EMOTIV EPOC+搭载14个（+2个参考电极）传感器，电极位置分别为：AF3、AF4、F3、F4、FC5、FC6、F7、F8、T7、T8、P7、P8、O1、O2；其采样率为128 SPS（内部采样率为2048 Hz），分辨率为14位，1 LSB = 0.51μV。该设备为2.4GHz频段的无线装置。 刺激实验条件： 本次数据采集于智能机器实验室研究团队年度研讨会期间完成。实验在独立封闭空间内开展，受试者需在心理治疗师在场的情况下单独完成实验流程。受试者需尽量减少眨眼与肢体动作，以尽可能降低信号伪影的干扰。 实验流程： 实验开始前，受试者需闭眼并尽量减少肢体动作与言语交流。心理治疗师首先朗读第一种情境描述，并引导受试者进行情境想象。该想象阶段分为两个子阶段：前15秒由心理治疗师朗读情境描述，后15秒由受试者进行情境回忆。计时结束后，受试者需通过自我评估量表（Self Assessment Manikin）对本次刺激过程中的自身感受进行评分。该量表包含两个评分维度：效价（Valence）与唤醒度（Arousal）。该实验流程重复进行，直至第六种情境完成。实验结束后，心理治疗师将重新评估汉密尔顿焦虑量表（HAM-A）中的部分条目，以校准受试者的焦虑水平。 数据集内容： 本数据集包含23名受试者的原始脑电数据的.edf格式文件，同时提供以.mat格式存储的原始数据与预处理后数据。本数据集附带一份Matlab脚本，可将每条脑电信号分割为与6种情境对应的6个片段。 所有使用基于心理刺激的焦虑状态检测数据集（DASPS Database）的研究成果与学术论文，需通过引用以下文献以表明对本数据集的使用： [1] Asma Baghdadi、Yassine Aribi、Rahma Fourati、Najla Halouani、Patrick Siarry及Adel M. Alimi, "DASPS: A Database for Anxious States based on a Psychological Stimulation", arXiv预印本arXiv:1901.02942（2019年） [2] Asma Baghdadi、Yassine Aribi、Rahma Fourati、Najla Halouani、Patrick Siarry及Adel Alimi, "Psychological stimulation for anxious states detection based on EEG-related features", 《环境智能与人性化计算杂志》（2020年）：1-15
