Classifying schizotypy using an audiovisual emotion perception test and scalp electroencephalography

Ji Woon Jeong, Tariku W. Wendimagegn, Eunhee Chang, Yeseul Chun, Joon Hyuk Park, Hyong Joong Kim, Hyun Taek Kim

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Schizotypy refers to the personality trait of experiencing “psychotic” symptoms and can be regarded as a predisposition of schizophrenia-spectrum psychopathology (Raine, 1991). Cumulative evidence has revealed that individuals with schizotypy, as well as schizophrenia patients, have emotional processing deficits. In the present study, we investigated multimodal emotion perception in schizotypy and implemented the machine learning technique to find out whether a schizotypy group (ST) is distinguishable from a control group (NC), using electroencephalogram (EEG) signals. Forty-five subjects (30 ST and 15 NC) were divided into two groups based on their scores on a Schizotypal Personality Questionnaire. All participants performed an audiovisual emotion perception test while EEG was recorded. After the preprocessing stage, the discriminatory features were extracted using a mean subsampling technique. For an accurate estimation of covariance matrices, the shrinkage linear discriminant algorithm was used. The classification attained over 98% accuracy and zero rate of false-positive results. This method may have important clinical implications in discriminating those among the general population who have a subtle risk for schizotypy, requiring intervention in advance.

Original languageEnglish
Article number450
JournalFrontiers in Human Neuroscience
Volume11
DOIs
Publication statusPublished - 2017 Sep 12

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Scalp
Personality
Electroencephalography
Schizophrenia
Emotions
Psychopathology
Control Groups
Population
Surveys and Questionnaires
Machine Learning

Keywords

  • Classification
  • EEG
  • Multimodal emotion perception
  • Schizotypy
  • Shrinkage linear discriminant analysis

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Neurology
  • Psychiatry and Mental health
  • Biological Psychiatry
  • Behavioral Neuroscience

Cite this

Classifying schizotypy using an audiovisual emotion perception test and scalp electroencephalography. / Jeong, Ji Woon; Wendimagegn, Tariku W.; Chang, Eunhee; Chun, Yeseul; Park, Joon Hyuk; Kim, Hyong Joong; Kim, Hyun Taek.

In: Frontiers in Human Neuroscience, Vol. 11, 450, 12.09.2017.

Research output: Contribution to journalArticle

Jeong, Ji Woon ; Wendimagegn, Tariku W. ; Chang, Eunhee ; Chun, Yeseul ; Park, Joon Hyuk ; Kim, Hyong Joong ; Kim, Hyun Taek. / Classifying schizotypy using an audiovisual emotion perception test and scalp electroencephalography. In: Frontiers in Human Neuroscience. 2017 ; Vol. 11.
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