Spreading depression: Evidence of five electroencephalogram phases.

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Fältnamn	Indikatorer	Metadata
000		03486naa a2200421 4500
001		oai:research.chalmers.se:8dece373-1cff-48e0-9166-505d7848d011
003		SwePub
008		171008s2014 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://research.chalmers.se/publication/1989662 URI
024	7	a https://doi.org/10.1002/jnr.234122 DOI
040		a (SwePub)cth
041		a engb eng
042		9 SwePub
072	7	a art2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Broberg, Marita,d 1973u Flinders University of South Australia4 aut
245	1 0	a Spreading depression: Evidence of five electroencephalogram phases.
264		c 2014-05-20
264	1	b Wiley,c 2014
520		a Spreading depression (SD), a self-propagating wave of astroglial and neuronal depolarization, is an accompaniment of several neurological disorders including epilepsy. Its well-described features are initial depolarization, followed by EEG flattening. In this in vivo study in awake animals, the relationship of SDs to epileptiform activity was re-examined. We assessed SDs generated by mechanical stimulation and by metabolic inhibition with fluorocitrate. In addition to identifying prolonged EEG depression, we identified two periods, one prior to and another during depression, characterized by increases in power of specific frequencies that were sometimes associated with epileptiform discharges. The first period was characterized by ripple activity close to the induction site (88% of SDs with intracortical electrodes). The second period was characterized by localized low-frequency spikes (100% with dural screw electrodes, 65% with intracortical electrodes). By using fluorocitrate to induce SDs, the initial period was also characterized by runs of spikes (52%). Finally, with SDs induced by both methods, there was a period at the end of depression when additional, unprovoked SDs occurred (20%). Five stages of SD were defined by these phenomena, in the order: excitation, depression, excitation, depression, SD, with metabolic inhibition enhancing the expression of epileptiform spiking.
650	7	a TEKNIK OCH TEKNOLOGIERx Medicinteknikx Medicinsk laboratorie- och mätteknik0 (SwePub)206012 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Medical Engineeringx Medical Laboratory and Measurements Technologies0 (SwePub)206012 hsv//eng
650	7	a MEDICIN OCH HÄLSOVETENSKAPx Medicinska och farmaceutiska grundvetenskaperx Neurovetenskaper0 (SwePub)301052 hsv//swe
650	7	a MEDICAL AND HEALTH SCIENCESx Basic Medicinex Neurosciences0 (SwePub)301052 hsv//eng
653		a high-frequency activity
653		a impedance
653		a fluorocitrate
653		a ripples
653		a epileptiform discharges
700	1	a Pope, Kennethu Flinders University of South Australia4 aut
700	1	a Olsson, Torsten,d 1937u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)torsten
700	1	a William Shuttleworth, Cu University of New Mexico4 aut
700	1	a Willoughby, Johnu Flinders University of South Australia4 aut
710	2	a Flinders University of South Australiab Chalmers tekniska högskola4 org
773	0	t Journal of Neuroscience Researchd : Wileyg 92:10, s. 1384-1394q 92:10<1384-1394x 0360-4012x 1097-4547
856	4	u http://dx.doi.org/10.1002/jnr.23412y FULLTEXT
856	4 8	u https://research.chalmers.se/publication/198966
856	4 8	u https://doi.org/10.1002/jnr.23412

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Av författaren/redakt...: Broberg, Marita, ...; Pope, Kenneth; Olsson, Torsten, ...; William Shuttlew ...; Willoughby, John

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Medicinteknik; och Medicinsk labora ...

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