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Frontal white matter volume and delta EEG sources negatively correlate in awake subjects with mild cognitive impairment and Alzheimer's disease.
Clin Neurophysiol. 2006 May; 117(5):1113-29.CN

Abstract

OBJECTIVE

A relationship between brain atrophy and delta rhythmicity (1.5-4 Hz) has been previously explored in Alzheimer's disease (AD) subjects [Fernandez A, Arrazola J, Maestu F, Amo C, Gil-Gregorio P, Wienbruch C, Ortiz T. Correlations of hippocampal atrophy and focal low-frequency magnetic activity in Alzheimer disease: volumetric MR imaging-magnetoencephalographic study. Am J Neuroradiol. 2003 24(3):481-487]. In this study, we tested the hypothesis that such a relationship does exist not only in AD patients but also across the continuum of subjects with mild cognitive impairment (MCI) and AD.

METHODS

Resting, eyes-closed EEG data were recorded in 34 MCI and 65 AD subjects. EEG rhythms of interest were delta (2-4 Hz), theta (4-8 Hz), alpha 1 (8-10.5 Hz), alpha 2 (10.5-13 Hz), beta 1 (13-20 Hz), and beta 2 (20-30 Hz). EEG cortical sources were estimated by LORETA. Cortical EEG sources were correlated with MR-based measurements of lobar brain volume (white and gray matter).

RESULTS

A negative correlation was observed between the frontal white matter and the amplitude of frontal delta sources (2-4 Hz) across MCI and AD subjects.

CONCLUSIONS

These results confirmed for the first time the hypothesis that the sources of resting delta rhythms (2-4 Hz) are correlated with lobar brain volume across MCI and AD subjects.

SIGNIFICANCE

The present findings support, at least at group level, the 'transition hypothesis' of brain structural and functional continuity between MCI and AD.

Authors+Show Affiliations

Dipartimento di Fisiologia Umana e Farmacologia, University La Sapienza, Rome, Italy. claudio.babiloni@uniroma1.itNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16564740

Citation

Babiloni, Claudio, et al. "Frontal White Matter Volume and Delta EEG Sources Negatively Correlate in Awake Subjects With Mild Cognitive Impairment and Alzheimer's Disease." Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, vol. 117, no. 5, 2006, pp. 1113-29.
Babiloni C, Frisoni G, Steriade M, et al. Frontal white matter volume and delta EEG sources negatively correlate in awake subjects with mild cognitive impairment and Alzheimer's disease. Clin Neurophysiol. 2006;117(5):1113-29.
Babiloni, C., Frisoni, G., Steriade, M., Bresciani, L., Binetti, G., Del Percio, C., Geroldi, C., Miniussi, C., Nobili, F., Rodriguez, G., Zappasodi, F., Carfagna, T., & Rossini, P. M. (2006). Frontal white matter volume and delta EEG sources negatively correlate in awake subjects with mild cognitive impairment and Alzheimer's disease. Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, 117(5), 1113-29.
Babiloni C, et al. Frontal White Matter Volume and Delta EEG Sources Negatively Correlate in Awake Subjects With Mild Cognitive Impairment and Alzheimer's Disease. Clin Neurophysiol. 2006;117(5):1113-29. PubMed PMID: 16564740.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Frontal white matter volume and delta EEG sources negatively correlate in awake subjects with mild cognitive impairment and Alzheimer's disease. AU - Babiloni,Claudio, AU - Frisoni,Giovanni, AU - Steriade,Mircea, AU - Bresciani,Lorena, AU - Binetti,Giuliano, AU - Del Percio,Claudio, AU - Geroldi,Cristina, AU - Miniussi,Carlo, AU - Nobili,Flavio, AU - Rodriguez,Guido, AU - Zappasodi,Filippo, AU - Carfagna,Tania, AU - Rossini,Paolo M, Y1 - 2006/03/27/ PY - 2005/10/20/received PY - 2006/01/23/revised PY - 2006/01/28/accepted PY - 2006/3/28/pubmed PY - 2006/7/14/medline PY - 2006/3/28/entrez SP - 1113 EP - 29 JF - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology JO - Clin Neurophysiol VL - 117 IS - 5 N2 - OBJECTIVE: A relationship between brain atrophy and delta rhythmicity (1.5-4 Hz) has been previously explored in Alzheimer's disease (AD) subjects [Fernandez A, Arrazola J, Maestu F, Amo C, Gil-Gregorio P, Wienbruch C, Ortiz T. Correlations of hippocampal atrophy and focal low-frequency magnetic activity in Alzheimer disease: volumetric MR imaging-magnetoencephalographic study. Am J Neuroradiol. 2003 24(3):481-487]. In this study, we tested the hypothesis that such a relationship does exist not only in AD patients but also across the continuum of subjects with mild cognitive impairment (MCI) and AD. METHODS: Resting, eyes-closed EEG data were recorded in 34 MCI and 65 AD subjects. EEG rhythms of interest were delta (2-4 Hz), theta (4-8 Hz), alpha 1 (8-10.5 Hz), alpha 2 (10.5-13 Hz), beta 1 (13-20 Hz), and beta 2 (20-30 Hz). EEG cortical sources were estimated by LORETA. Cortical EEG sources were correlated with MR-based measurements of lobar brain volume (white and gray matter). RESULTS: A negative correlation was observed between the frontal white matter and the amplitude of frontal delta sources (2-4 Hz) across MCI and AD subjects. CONCLUSIONS: These results confirmed for the first time the hypothesis that the sources of resting delta rhythms (2-4 Hz) are correlated with lobar brain volume across MCI and AD subjects. SIGNIFICANCE: The present findings support, at least at group level, the 'transition hypothesis' of brain structural and functional continuity between MCI and AD. SN - 1388-2457 UR - https://www.unboundmedicine.com/medline/citation/16564740/Frontal_white_matter_volume_and_delta_EEG_sources_negatively_correlate_in_awake_subjects_with_mild_cognitive_impairment_and_Alzheimer's_disease_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1388-2457(06)00052-6 DB - PRIME DP - Unbound Medicine ER -