Portraying Human Motor Imagery: A MEG Study

Chholak, Parth (2018). Portraying Human Motor Imagery: A MEG Study. Thesis (Master thesis), E.T.S.I. Telecomunicación (UPM).

Description

Title: Portraying Human Motor Imagery: A MEG Study
Author/s:
  • Chholak, Parth
Contributor/s:
  • Pisarchik, Alexander N.
Item Type: Thesis (Master thesis)
Masters title: Ingeniería Biomédica
Date: 18 July 2018
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Biotecnologia [hasta 2014]
Creative Commons Licenses: None

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Abstract

The understanding of the neurophysiological mechanisms responsible for performing motor imagery (MI) is essential for the development of Brain-Computer Interfaces (BCI) and neurorehabilitation. Our magnetoencephalographic (MEG) experiments with eight voluntary participants confirm the existence of two types of motor imagery: kinesthetic imagery (KI) and visual imagery (VI). These two types of motor imagery are distinguished by the activation or inhibition of different brain areas in Mu (Alpha and Beta) frequency regions. In particular, event-related synchronization analysis shows that VI activates Mu waves in the Occipital and Precuneus region, whereas KI inhibits Mu activity in motor-associated structures and the inferior parietal lobule. A model for neural communication and motor inhibition is proposed, claiming Mu wave as a carrier for MI content. Validation of this model using coherence of brain signals and machine learning is presented along with the identification of a unique 45 Hz signal that is being utilized to carry MI content inside the brain.

More information

Item ID: 56178
DC Identifier: http://oa.upm.es/56178/
OAI Identifier: oai:oa.upm.es:56178
Deposited by: Mr Parth Chholak
Deposited on: 02 Sep 2019 11:20
Last Modified: 02 Sep 2019 11:20
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