Nothing Special   »   [go: up one dir, main page]

See your mental state from your walk: Recognizing anxiety and depression through Kinect-recorded gait data

PLoS One. 2019 May 22;14(5):e0216591. doi: 10.1371/journal.pone.0216591. eCollection 2019.

Abstract

As the challenge of mental health problems such as anxiety and depression increasing today, more convenient, objective, real-time assessing techniques of mental state are in need. The Microsoft Kinect camera is a possible option for contactlessly capturing human gait, which could reflect the walkers' mental state. So we tried to propose a novel method for monitoring individual's anxiety and depression based on the Kinect-recorded gait pattern. In this study, after finishing the 7-item Generalized Anxiety Disorder Scale (GAD-7) and the 9-item Patient Health Questionnaire (PHQ-9), 179 participants were required to walked on the footpath naturally while shot by the Kinect cameras. Fast Fourier Transforms (FFT) were conducted to extract features from the Kinect-captured gait data after preprocessing, and different machine learning algorithms were used to train the regression models recognizing anxiety and depression levels, and the classification models detecting the cases with specific depressive symptoms. The predictive accuracies of the regression models achieved medium to large level: The correlation coefficient between predicted and questionnaire scores reached 0.51 on anxiety (by epsilon-Support Vector Regression, e-SVR) and 0.51 on depression (by Gaussian Processes, GP). The predictive accuracies could be even higher, 0.74 on anxiety (by GP) and 0.64 on depression (by GP), while training and testing the models on the female sample. The classification models also showed effectiveness on detecting the cases with some symptoms. These results demonstrate the possibility to recognize individual's questionnaire measured anxiety/depression levels and some depressive symptoms based on Kinect-recorded gait data through machine learning method. This approach shows the potential to develop non-intrusive, low-cost methods for monitoring individuals' mental health in real time.

MeSH terms

  • Adult
  • Algorithms
  • Anxiety Disorders / diagnosis*
  • Depressive Disorder / diagnosis*
  • Female
  • Gait / physiology*
  • Humans
  • Machine Learning*
  • Male
  • Mental Health
  • Models, Statistical*
  • Psychological Tests
  • Surveys and Questionnaires
  • Walking / physiology*
  • Young Adult

Grants and funding

This study is supported by National Key Research & Development Program of China (2016YFC1307200; URL of the funder: http://www.most.gov.cn/eng/) and National Natural Science Foundation of China (31700984; URL of the funder: http://www.nsfc.gov.cn/english/site_1/index.html). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.