Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Brain rhythms alterations and their effect in functional networks: A simultaneous EEG/fMRI study in Fixation-off epilepsy
Year:2012
Research Areas
  • Physics - Medical physics,
  • Clinical medicine and epidemiology,
  • Electronic technology and of the communications
Information
Abstract
Fixation-off sensitivity (FOS) denotes the forms of EEG abnormalities, which are elicited by elimination of central vision or fixation. The phenomenon seems to depend on variables that modulate the alpha rhythm, however, the cerebral mechanisms underlying FOS remain unclear [1]. The scarce previous fMRI findings related to FOS have shown activation in extrastriate cortex [2] and also in frontal areas [3][4]. On the other hand, simultaneous EEG-fMRI technique has been used to assess the relationship between spontaneous power fluctuations of electrical rhythms and associated fMRI signal modulations. These studies have identified that lateral frontoparietal networks show a negative correlation with alpha band in healthy subjects. This neuroanatomical pattern is related to attentional processes and cognitive resources. Moreover, a sub-beta band (17-23 Hz) has been identified with posterior cingulate, temporoparietal junction and dorso-medial prefrontal cortex activations, which correspond to the DMN [5][6].
International
Si
Congress
International Society of Magnetic Resonance in Medicine
960
Place
Melbourne
Reviewers
Si
ISBN/ISSN
1545-4428
Start Date
05/05/2012
End Date
11/05/2012
From page
370
To page
370
Proc. Intl. Soc. Mag. Reson. Med. 20
Participants
  • Autor: Ana Beatriz Solana Sanchez (UPM)
  • Autor: Juan Antonio Hernández-Tamames (Universidad Rey Juan Carlos)
  • Autor: Elena Molina (Universidad Rey Juan Carlos)
  • Autor: Francisco del Pozo Guerrero (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
  • Departamento: Tecnología Fotónica y Bioingeniería
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)