Is it really right? When lateralization is misleading: two cases of unusual lateralization of physiological EEG patterns

Autor:	Rosario Cicero, Luigi Giuseppe Bongiovanni, Antonio Fiaschi, F. Rossini, Francesco Brigo
Rok vydání:	2012
Předmět:	medicine.medical_specialty Neurology medicine.diagnostic_test business.industry Sleep spindle General Medicine Audiology Electroencephalography EEG-fMRI Lateralization of brain function Rhythm medicine Neurology (clinical) Abnormality business Neuroradiology
Zdroj:	Acta Neurologica Belgica. 112:393-396
ISSN:	2240-2993 0300-9009
DOI:	10.1007/s13760-012-0071-8
Popis:	A correct lateralization of an EEG activity (i.e., the correlation of an EEG activity with one hemispheric side) is essential to perform a topographic diagnosis. A lateralized activity appears only or mostly on one side of the head. Normal patterns (such as sleep spindles, lambda waves, mu rhythm or vertex waves) may have a shifting lateralization, whereas their persistent lateralization or asymmetry is usually considered abnormal, suggesting a cerebral abnormality on the side where normal activity is absent. We report two patients in whom a persistent lateralized/ asymmetric distribution of physiological waves (mu rhythm and lambda waves) was expression of a cerebral dysfunction homolateral (and not contralateral, as one could expect on the basis of common EEG knowledge) to the side where normal activity was present or in which it showed a higher amplitude.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::055bdaebdc388c430f7448fe1579e719 https://doi.org/10.1007/s13760-012-0071-8 Zobrazit plný text záznamu Full text from SpringerLink