Chaos Analysis of Speech Imagery of IPA Vowels

  • Debdeep Sikdar
  • Rinku Roy
  • Manjunatha Mahadevappa
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11278)


In Brain Computer Interfacing (BCI), speech imagery is still at nascent stage of development. There are few studies reported considering mostly vowels or monosyllabic words. However, language specific vowels or words made it harder to standardise the whole analysis of electroencephalography (EEG) while distinguishing between them. Through this study, we have explored significance of chaos parameters for different imagined vowels chosen from International Phonetic Alphabets (IPA). The vowels were categorised into two categories, namely, soft vowels and diphthongs. Chaos analysis at EEG subband levels were evaluated. We have also reported significant contrasts between spatiotemporal distributions with chaos analysis for activation of different brain regions in imagining vowels.


Speech imagery Vowel imagery Chaos analysis 


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© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.School of Medical Science and TechnologyIndian Institute of Technology KharagpurKharagpurIndia
  2. 2.Advanced Technology Development CentreIndian Institute of Technology KharagpurKharagpurIndia

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