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Solana Sánchez, Ana Beatriz, Hernández Tamames, J.A., Molina, Elena, Martínez, Kenia, Alcalá, Juan José, Toledano, Rafael, San Antonio-Arce, Victoria, Garcia Morales, Irene, Gil Nagel, Antonio, Maestu Unturbe, Ceferino ORCID: https://orcid.org/0000-0001-8380-1193, Alvarez Linera, Juan, Alfayate, E. and Pozo Guerrero, Francisco del
ORCID: https://orcid.org/0000-0001-9919-9125
(2012).
Brain rhythms alterations and their effect in functional networks: A simultaneous EEG/fMRI study in Fixation-off epilepsy.
In: "ISMRM 20th Annual Meeting & Exhibition - Proc. Intl. Soc. Mag. Reson. Med. 20", 05/05/2012 - 11/05/2012, Melbourne (Australia). p. 370.
Title: | Brain rhythms alterations and their effect in functional networks: A simultaneous EEG/fMRI study in Fixation-off epilepsy |
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Author/s: |
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Item Type: | Presentation at Congress or Conference (Poster) |
Event Title: | ISMRM 20th Annual Meeting & Exhibition - Proc. Intl. Soc. Mag. Reson. Med. 20 |
Event Dates: | 05/05/2012 - 11/05/2012 |
Event Location: | Melbourne (Australia) |
Title of Book: | ISMRM 20th Annual Meeting & Exhibition - Proc. Intl. Soc. Mag. Reson. Med. 20 |
Date: | 2012 |
Subjects: | |
Faculty: | Centro de Tecnología Biomédica (CTB) (UPM) |
Department: | Otro |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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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].
Item ID: | 19170 |
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DC Identifier: | https://oa.upm.es/19170/ |
OAI Identifier: | oai:oa.upm.es:19170 |
Official URL: | http://www.ismrm.org/12/ |
Deposited by: | Memoria Investigacion |
Deposited on: | 23 Sep 2013 15:36 |
Last Modified: | 22 Sep 2014 11:15 |