Frequency domain characterization of the somatosensory steady state response in electroencephalography

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Abstract

A continuous somatosensory stimulation evokes a steady state response in the cortex, which can be measured using electroencephalography. We applied mechanical multisine stimulation of the wrist to investigate the properties of the steady state response in the frequency domain. Our results show a response in the contralateral sensorimotor cortex at the stimulated frequencies yet with more power at their even harmonics, indicating substantial nonlinear behavior. The observed cortical response to a mechanical somatosensory stimulation is time invariant and nonlinear, however shows no subharmonics, allowing for the application of a broad range of (non)linear system identification tools.

Original languageEnglish
Title of host publicationIFAC-PapersOnline
EditorsY Zhao
PublisherElsevier
Pages1391-1396
Volume48 - 28
DOIs
Publication statusPublished - 2015
Event17th IFAC Symposium on System Identification - Beijing, China
Duration: 19 Oct 201521 Oct 2015

Conference

Conference17th IFAC Symposium on System Identification
Abbreviated titleSYSID 2015
CountryChina
CityBeijing
Period19/10/1521/10/15

Keywords

  • electroencephalography
  • multisine signal
  • robotic manipulator
  • somatosensory
  • steady state response

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