Analysis of EEG tracings in frequency and time domain in hepatic encephalopathy

Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessm...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Computer methods and programs in biomedicine Jg. 81; H. 3; S. 203 - 212
Hauptverfasser:	Pascoli, D., Guérit, J.M., Montagnese, S., de Tourtchaninoff, M., Minelli, T., Pellegrini, A., Del Piccolo, F., Gatta, A., Amodio, P.
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Ireland Elsevier Ireland Ltd 01.03.2006
Schlagworte:	Aged Cognitive alterations Digital EEG Electrodes Electroencephalography - methods Encephalopathy Female Fibrosis - pathology Frequency-domain analysis Hepatic Encephalopathy - diagnosis Hepatic Encephalopathy - pathology Humans Liver - pathology Liver failure Male Middle Aged Models, Statistical Neurophysiology Reproducibility of Results Signal Processing, Computer-Assisted Software Time Factors Time-domain analysis Digital EEG Liver failure Frequency-domain analysis Cognitive alterations Time-domain analysis Encephalopathy
ISSN:	0169-2607, 1872-7565
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Abstract	Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessment of HE. The EEG tracings of 73 cirrhotic patients with HE were analyzed. Artifact-free periods of about 1 min were selected. Equipment noise was measured by short-circuiting all the electrodes. The equipment noise was notable below 1.5 Hz; the best epoch length was 4 s and the statistical errors were minimal for the band with the highest relative power. Nineteen per cent of the tracings were unstable. The spectral values were found to be related to liver function and to the degree of HE, whereas the relationship with psychometric variables was poor. The indexes computed by time-domain analysis were found to be better related to psychometric findings. We have provided information on the optimisation of spectral EEG analysis and presented a time-domain analysis giving results related to psychometric tests and liver function.
AbstractList	Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessment of HE. The EEG tracings of 73 cirrhotic patients with HE were analyzed. Artifact-free periods of about 1 min were selected. Equipment noise was measured by short-circuiting all the electrodes. The equipment noise was notable below 1.5 Hz; the best epoch length was 4 s and the statistical errors were minimal for the band with the highest relative power. Nineteen per cent of the tracings were unstable. The spectral values were found to be related to liver function and to the degree of HE, whereas the relationship with psychometric variables was poor. The indexes computed by time-domain analysis were found to be better related to psychometric findings. We have provided information on the optimisation of spectral EEG analysis and presented a time-domain analysis giving results related to psychometric tests and liver function. Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessment of HE. The EEG tracings of 73 cirrhotic patients with HE were analyzed. Artifact-free periods of about 1 min were selected. Equipment noise was measured by short-circuiting all the electrodes. The equipment noise was notable below 1.5 Hz; the best epoch length was 4s and the statistical errors were minimal for the band with the highest relative power. Nineteen per cent of the tracings were unstable. The spectral values were found to be related to liver function and to the degree of HE, whereas the relationship with psychometric variables was poor. The indexes computed by time-domain analysis were found to be better related to psychometric findings. We have provided information on the optimisation of spectral EEG analysis and presented a time-domain analysis giving results related to psychometric tests and liver function.Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessment of HE. The EEG tracings of 73 cirrhotic patients with HE were analyzed. Artifact-free periods of about 1 min were selected. Equipment noise was measured by short-circuiting all the electrodes. The equipment noise was notable below 1.5 Hz; the best epoch length was 4s and the statistical errors were minimal for the band with the highest relative power. Nineteen per cent of the tracings were unstable. The spectral values were found to be related to liver function and to the degree of HE, whereas the relationship with psychometric variables was poor. The indexes computed by time-domain analysis were found to be better related to psychometric findings. We have provided information on the optimisation of spectral EEG analysis and presented a time-domain analysis giving results related to psychometric tests and liver function. Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessment of HE. The EEG tracings of 73 cirrhotic patients with HE were analyzed. Artifact-free periods of about 1 min were selected. Equipment noise was measured by short- circuiting all the electrodes. The equipment noise was notable below 1.5 Hz; the best epoch length was 4 s and the statistical errors were minimal for the band with the highest relative power. Nineteen per cent of the tracings were unstable. The spectral values were found to be related to liver function and to the degree of HE, whereas the relationship with psychometric variables was poor. The indexes computed by time-domain analysis were found to be better related to psychometric findings. We have provided information on the optimisation of spectral EEG analysis and presented a time-domain analysis giving results related to psychometric tests and liver function. Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A study on these items was carried out. In addition, spectral analysis and a new analysis, performed in time domain, were compared in the assessment of HE. The EEG tracings of 73 cirrhotic patients with HE were analyzed. Artifact-free periods of about 1 min were selected. Equipment noise was measured by short-circuiting all the electrodes. The equipment noise was notable below 1.5 Hz; the best epoch length was 4s and the statistical errors were minimal for the band with the highest relative power. Nineteen per cent of the tracings were unstable. The spectral values were found to be related to liver function and to the degree of HE, whereas the relationship with psychometric variables was poor. The indexes computed by time-domain analysis were found to be better related to psychometric findings. We have provided information on the optimisation of spectral EEG analysis and presented a time-domain analysis giving results related to psychometric tests and liver function.
Author	Pascoli, D. Amodio, P. Minelli, T. Gatta, A. Del Piccolo, F. Montagnese, S. de Tourtchaninoff, M. Guérit, J.M. Pellegrini, A.
Author_xml	– sequence: 1 givenname: D. surname: Pascoli fullname: Pascoli, D. organization: Department of Physics University of Padova, Italy – sequence: 2 givenname: J.M. surname: Guérit fullname: Guérit, J.M. organization: Unité pour la Recherche Neurophysiologique du Systeme Nerveux, Université de Louvain Bruxelles, Belgium – sequence: 3 givenname: S. surname: Montagnese fullname: Montagnese, S. organization: Department of Clinical and Experimental Medicine, Via Giustiniani, 2, 33128 Padova, Italy – sequence: 4 givenname: M. surname: de Tourtchaninoff fullname: de Tourtchaninoff, M. organization: Unité pour la Recherche Neurophysiologique du Systeme Nerveux, Université de Louvain Bruxelles, Belgium – sequence: 5 givenname: T. surname: Minelli fullname: Minelli, T. organization: Department of Physics University of Padova, Italy – sequence: 6 givenname: A. surname: Pellegrini fullname: Pellegrini, A. organization: Department of Clinical and Experimental Medicine, Via Giustiniani, 2, 33128 Padova, Italy – sequence: 7 givenname: F. surname: Del Piccolo fullname: Del Piccolo, F. organization: Department of Clinical and Experimental Medicine, Via Giustiniani, 2, 33128 Padova, Italy – sequence: 8 givenname: A. surname: Gatta fullname: Gatta, A. organization: Department of Clinical and Experimental Medicine, Via Giustiniani, 2, 33128 Padova, Italy – sequence: 9 givenname: P. surname: Amodio fullname: Amodio, P. email: piero.amodio@unipd.it organization: Department of Clinical and Experimental Medicine, Via Giustiniani, 2, 33128 Padova, Italy
BackLink	https://www.ncbi.nlm.nih.gov/pubmed/16478642$$D View this record in MEDLINE/PubMed
BookMark	eNqFkUFr3DAQhUVJaTZp_0APRafevBnJlmSVXkLYpoFALu1ZyLLU1daWXMkb8L-vzKY95JCAYNDM-4bhvQt0FmKwCH0ksCVA-NVha8ap21IAVhpbAPkGbUgraCUYZ2doU0SyohzEObrI-QAAlDH-Dp0T3oiWN3SDHq6DHpbsM44O73a3eE7a-PArYx-wS_bP0QazYB16PPvR4j6OukzK29tJz97gMrfTXg-xfPfLe_TW6SHbD0_1Ev38tvtx8726f7i9u7m-rwwDOleGWyYZEZJxR0hNqehZaztHO8qclCCk7kjteg2O1ZrWwLhpmRWSNl3XNlBfos-nvVOK5cY8q9FnY4dBBxuPWXEhKLRCvioksqESaFuEn56Ex260vZqSH3Va1D-viqA9CUyKOSfrlPFzsSCG4pkfFAG1xqIOao1FrbGsvRJLQekz9P_2l6CvJ8gWHx-9TSobv7rd-2TNrProX8a_PMPN4IM3evhtl9fgvwibuCY
CitedBy_id	crossref_primary_10_1080_1086508X_2008_11079678 crossref_primary_10_1016_j_physa_2019_123234 crossref_primary_10_1002_hep_28477 crossref_primary_10_1016_j_ergon_2012_02_004 crossref_primary_10_1111_j_1479_8425_2010_00484_x crossref_primary_10_1007_s11011_014_9589_1 crossref_primary_10_1007_s40998_018_0060_x crossref_primary_10_1007_s11011_017_0032_2 crossref_primary_10_1016_j_neures_2016_04_009 crossref_primary_10_3390_mi16080886
Cites_doi	10.7861/clinmedicine.1-1-54 10.1136/bmj.2.5710.633 10.1523/JNEUROSCI.18-18-07474.1998 10.1007/BF02029493 10.1002/hep.1840180508 10.1080/01616412.1998.11740490 10.1023/B:MEBR.0000043977.11113.2a 10.1002/hep.510240316 10.1016/0013-4694(84)90071-3 10.1016/S0168-8278(86)80149-0 10.1016/S1388-2457(99)00076-0 10.1016/0140-6736(91)92920-W 10.1016/S0016-5085(77)80135-2 10.1055/s-2008-1040782 10.1002/hep.510270608 10.1007/BF01072510 10.1002/hep.510280108 10.1016/0168-8278(92)90148-I 10.1023/A:1021982719654 10.1016/S0168-8278(01)00129-5 10.1023/B:MEBR.0000043975.01841.de 10.1111/j.1572-0241.2000.02265.x 10.1159/000171581 10.1002/hep.510290619 10.1002/bjs.1800600817 10.1016/S0140-6736(57)90005-3 10.1023/A:1021989230535 10.1023/A:1020684724992 10.1023/A:1020665431411
ContentType	Journal Article
Copyright	2006 Elsevier Ireland Ltd
Copyright_xml	– notice: 2006 Elsevier Ireland Ltd
DBID	AAYXX CITATION CGR CUY CVF ECM EIF NPM 7QO 8FD FR3 P64 7X8
DOI	10.1016/j.cmpb.2005.10.009
DatabaseName	CrossRef Medline MEDLINE MEDLINE (Ovid) MEDLINE MEDLINE PubMed Biotechnology Research Abstracts Technology Research Database Engineering Research Database Biotechnology and BioEngineering Abstracts MEDLINE - Academic
DatabaseTitle	CrossRef MEDLINE Medline Complete MEDLINE with Full Text PubMed MEDLINE (Ovid) Engineering Research Database Biotechnology Research Abstracts Technology Research Database Biotechnology and BioEngineering Abstracts MEDLINE - Academic
DatabaseTitleList	MEDLINE - Academic Engineering Research Database MEDLINE
Database_xml	– sequence: 1 dbid: NPM name: PubMed url: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed sourceTypes: Index Database – sequence: 2 dbid: 7X8 name: MEDLINE - Academic url: https://search.proquest.com/medline sourceTypes: Aggregation Database
DeliveryMethod	fulltext_linktorsrc
Discipline	Medicine
EISSN	1872-7565
EndPage	212
ExternalDocumentID	16478642 10_1016_j_cmpb_2005_10_009 S0169260706000034
Genre	Journal Article
GroupedDBID	--- --K --M -~X .1- .DC .FO .GJ .~1 0R~ 1B1 1P~ 1RT 1~. 1~5 29F 4.4 457 4G. 53G 5GY 5RE 5VS 7-5 71M 8P~ 9JN AAEDT AAEDW AAIKJ AAKOC AALRI AAOAW AAQFI AAQXK AATTM AAXKI AAXUO AAYFN AAYWO ABBOA ABFNM ABJNI ABMAC ABMZM ABWVN ABXDB ACDAQ ACGFS ACIEU ACIUM ACLOT ACNNM ACRLP ACRPL ACVFH ACZNC ADBBV ADCNI ADEZE ADJOM ADMUD ADNMO AEBSH AEIPS AEKER AENEX AEUPX AEVXI AFJKZ AFPUW AFRHN AFTJW AFXIZ AGHFR AGQPQ AGUBO AGYEJ AHHHB AHZHX AIALX AIEXJ AIGII AIIUN AIKHN AITUG AJRQY AJUYK AKBMS AKRWK AKYEP ALMA_UNASSIGNED_HOLDINGS AMRAJ ANKPU ANZVX AOUOD APXCP ASPBG AVWKF AXJTR AZFZN BKOJK BLXMC BNPGV CS3 DU5 EBS EFJIC EFKBS EFLBG EJD EO8 EO9 EP2 EP3 F5P FDB FEDTE FGOYB FIRID FNPLU FYGXN G-2 G-Q GBLVA GBOLZ HLZ HMK HMO HVGLF HZ~ IHE J1W KOM LG9 M29 M41 MO0 N9A O-L O9- OAUVE OZT P-8 P-9 P2P PC. Q38 R2- ROL RPZ SAE SBC SDF SDG SEL SES SEW SPC SPCBC SSH SSV SSZ T5K UHS WUQ XPP Z5R ZGI ZY4 ~G- ~HD AACTN AAIAV ABLVK ABTAH ABYKQ AFKWA AJBFU AJOXV AMFUW LCYCR RIG 9DU AAYXX CITATION AFCTW CGR CUY CVF ECM EIF NPM 7QO 8FD FR3 P64 7X8
ID	FETCH-LOGICAL-c502t-c6e59517956f113227d58ebf2b25f99079ab13fda0f53a23056c85e7924bb8403
ISICitedReferencesCount	9
ISICitedReferencesURI	http://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=Summon&SrcAuth=ProQuest&DestLinkType=CitingArticles&DestApp=WOS_CPL&KeyUT=000236463600003&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
ISSN	0169-2607
IngestDate	Thu Oct 02 11:13:50 EDT 2025 Mon Oct 06 17:58:20 EDT 2025 Wed Feb 19 01:43:48 EST 2025 Tue Nov 18 22:27:16 EST 2025 Sat Nov 29 03:57:15 EST 2025 Fri Feb 23 02:37:28 EST 2024 Tue Oct 14 19:30:35 EDT 2025
IsPeerReviewed	true
IsScholarly	true
Issue	3
Keywords	Digital EEG Liver failure Frequency-domain analysis Cognitive alterations Time-domain analysis Encephalopathy
Language	English
License	https://www.elsevier.com/tdm/userlicense/1.0
LinkModel	OpenURL
MergedId	FETCHMERGED-LOGICAL-c502t-c6e59517956f113227d58ebf2b25f99079ab13fda0f53a23056c85e7924bb8403
Notes	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
PMID	16478642
PQID	19429028
PQPubID	23462
PageCount	10
ParticipantIDs	proquest_miscellaneous_67720879 proquest_miscellaneous_19429028 pubmed_primary_16478642 crossref_citationtrail_10_1016_j_cmpb_2005_10_009 crossref_primary_10_1016_j_cmpb_2005_10_009 elsevier_sciencedirect_doi_10_1016_j_cmpb_2005_10_009 elsevier_clinicalkey_doi_10_1016_j_cmpb_2005_10_009
PublicationCentury	2000
PublicationDate	2006-03-01
PublicationDateYYYYMMDD	2006-03-01
PublicationDate_xml	– month: 03 year: 2006 text: 2006-03-01 day: 01
PublicationDecade	2000
PublicationPlace	Ireland
PublicationPlace_xml	– name: Ireland
PublicationTitle	Computer methods and programs in biomedicine
PublicationTitleAlternate	Comput Methods Programs Biomed
PublicationYear	2006
Publisher	Elsevier Ireland Ltd
Publisher_xml	– name: Elsevier Ireland Ltd
References	Groeneweg, Quero, De, Hartmann, Essink-bot, Hop, Schalm (bib20) 1998; 28 Burra, Pizzolato, Orlando, Rossato, Chierichetti, Tedeschi, Rossaro, Salvagnini, Ermani, Dam (bib10) 1994; 26 Amodio, Pellegrini, Amista, Luise, Del Piccolo, Mapelli, Montagnese, Musto, Valenti, Gatta (bib35) 2003; 18 Amodio, Del Piccolo, Marchetti, Angeli, Iemmolo, Caregaro, Merkel, Gerunda, Gatta (bib1) 1999; 29 Conn, Leevy, Vlahcevic, Rodgers, Maddrey, Seeff, Levy (bib24) 1977; 72 Feder (bib31) 1988 Ross, Danielsen, Bluml (bib14) 1996; 14 Amodio, Montagnese, Gatta, Morgan (bib15) 2004; 19 Montagnese, Amodio, Morgan (bib16) 2004; 19 Lockwood (bib12) 1998; 13 Lezak (bib26) 1995 Pappas, Jones (bib6) 1983; 3 Gitlin, Lewis, Hinkley (bib27) 1986; 3 Van der Rijt, Schalm (bib5) 1992; 14 G.H. Klem, H.O. Lüders, H.H. Jasper, C. Elger, in: G. Deuschal, A. Eisen (Eds.), Elsevier, Amsterdam, 1999, pp. 3–6. Beers (bib30) 1962 Amodio, Marchetti, Del Piccolo, Rizzo, Iemmolo, Caregaro, Gerunda, Gatta (bib19) 1998; 13 Van der Rijt, Schalm, De, De (bib17) 1984; 57 Amodio, Marchetti, Del Piccolo, Campo, Rizzo, Iemmolo, Gerunda, Caregaro, Merkel, Gatta (bib18) 1998; 27 Ehlers, Havstad, Prichard, Theiler (bib32) 1998; 18 Quero, Hartmann, Meulstee, Hop, Schalm (bib4) 1996; 24 Amodio, Marchetti, Del Piccolo, de Tourtchaninoff, Varghese, Zuliani, Campo, Gatta, Guerit (bib3) 1999; 110 Parsons-Smith, Summerskill, Dawson, Sherlock (bib8) 1957; 2 Butterworth (bib23) 2002; 17 Amodio, Quero, Del Piccolo, Gatta, Schalm (bib2) 1996; 11 O’Carroll, Hayes, Ebmeier, Dougall, Murray, Best, Bouchier, Goodwin (bib9) 1991; 337 Taylor-Robinson (bib13) 2001; 1 Pugh, Murray-Lyon, Dawson, Pietroni, Williams (bib22) 1973; 60 Amodio, Del Piccolo, Petteno, Mapelli, Angeli, Iemmolo, Muraca, Musto, Gerunda, Rizzo, Merkel, Gatta (bib21) 2001; 35 Lockwood, Murphy, Donnelly, Mahl, Perini (bib11) 1993; 18 Zeegen, Drinkwater, Dawson (bib7) 1970; 2 Bendat, Piersol (bib29) 2000 Conn (bib25) 1977; 22 Hartmann, Groeneweg, Quero, Beijeman, de Man, Hop, Schalm (bib34) 2000; 95 Straver, Keunen, Stam, Tavy, de Ruiter, Smith, Thijs, Schellens, Gielen (bib33) 1998; 20 Montagnese (10.1016/j.cmpb.2005.10.009_bib16) 2004; 19 Pappas (10.1016/j.cmpb.2005.10.009_bib6) 1983; 3 Amodio (10.1016/j.cmpb.2005.10.009_bib35) 2003; 18 Lockwood (10.1016/j.cmpb.2005.10.009_bib11) 1993; 18 Amodio (10.1016/j.cmpb.2005.10.009_bib18) 1998; 27 Ehlers (10.1016/j.cmpb.2005.10.009_bib32) 1998; 18 O’Carroll (10.1016/j.cmpb.2005.10.009_bib9) 1991; 337 Gitlin (10.1016/j.cmpb.2005.10.009_bib27) 1986; 3 Amodio (10.1016/j.cmpb.2005.10.009_bib3) 1999; 110 Taylor-Robinson (10.1016/j.cmpb.2005.10.009_bib13) 2001; 1 Van der Rijt (10.1016/j.cmpb.2005.10.009_bib5) 1992; 14 Ross (10.1016/j.cmpb.2005.10.009_bib14) 1996; 14 Amodio (10.1016/j.cmpb.2005.10.009_bib15) 2004; 19 Butterworth (10.1016/j.cmpb.2005.10.009_bib23) 2002; 17 Beers (10.1016/j.cmpb.2005.10.009_bib30) 1962 Amodio (10.1016/j.cmpb.2005.10.009_bib21) 2001; 35 Van der Rijt (10.1016/j.cmpb.2005.10.009_bib17) 1984; 57 Amodio (10.1016/j.cmpb.2005.10.009_bib1) 1999; 29 Lezak (10.1016/j.cmpb.2005.10.009_bib26) 1995 Straver (10.1016/j.cmpb.2005.10.009_bib33) 1998; 20 Zeegen (10.1016/j.cmpb.2005.10.009_bib7) 1970; 2 Quero (10.1016/j.cmpb.2005.10.009_bib4) 1996; 24 Conn (10.1016/j.cmpb.2005.10.009_bib25) 1977; 22 Lockwood (10.1016/j.cmpb.2005.10.009_bib12) 1998; 13 Conn (10.1016/j.cmpb.2005.10.009_bib24) 1977; 72 Amodio (10.1016/j.cmpb.2005.10.009_bib2) 1996; 11 Parsons-Smith (10.1016/j.cmpb.2005.10.009_bib8) 1957; 2 Pugh (10.1016/j.cmpb.2005.10.009_bib22) 1973; 60 Burra (10.1016/j.cmpb.2005.10.009_bib10) 1994; 26 Groeneweg (10.1016/j.cmpb.2005.10.009_bib20) 1998; 28 Feder (10.1016/j.cmpb.2005.10.009_bib31) 1988 Bendat (10.1016/j.cmpb.2005.10.009_bib29) 2000 Hartmann (10.1016/j.cmpb.2005.10.009_bib34) 2000; 95 Amodio (10.1016/j.cmpb.2005.10.009_bib19) 1998; 13 10.1016/j.cmpb.2005.10.009_bib28
References_xml	– volume: 337 start-page: 1250 year: 1991 end-page: 1253 ident: bib9 article-title: Regional cerebral blood flow and cognitive function in patients with chronic liver disease publication-title: Lancet – volume: 13 start-page: 159 year: 1998 end-page: 172 ident: bib19 article-title: Study on the Sternberg paradigm in cirrhotic patients without overt hepatic encephalopathy publication-title: Metab. Brain Dis. – volume: 17 start-page: 221 year: 2002 end-page: 227 ident: bib23 article-title: Pathophysiology of hepatic encephalopathy: a new look at ammonia publication-title: Metab. Brain Dis. – volume: 18 start-page: 7474 year: 1998 end-page: 7486 ident: bib32 article-title: Low doses of ethanol reduce evidence for nonlinear structure in brain activity publication-title: J. Neurosci. – volume: 28 start-page: 45 year: 1998 end-page: 49 ident: bib20 article-title: Subclinical hepatic encephalopathy impairs daily functioning publication-title: Hepatology – volume: 24 start-page: 556 year: 1996 end-page: 560 ident: bib4 article-title: The diagnosis of subclinical hepatic encephalopathy in patients with cirrhosis using neuropsychological tests and automated electroencephalogram analysis publication-title: Hepatology – volume: 14 start-page: 141 year: 1992 end-page: 142 ident: bib5 article-title: Quantitative EEG analysis and evoked potentials to measure (latent) hepatic encephalopathy publication-title: J. Hepatol. – volume: 27 start-page: 1517 year: 1998 end-page: 1523 ident: bib18 article-title: Visual attention in cirrhotic patients: a study on covert visual attention orienting publication-title: Hepatology – volume: 14 start-page: 30 year: 1996 end-page: 39 ident: bib14 article-title: Proton magnetic resonance spectroscopy: the new gold standard for diagnosis of clinical and subclinical hepatic encephalopathy? publication-title: Dig. Dis. – volume: 2 start-page: 867 year: 1957 end-page: 871 ident: bib8 article-title: The electroencephalograph in liver disease publication-title: Lancet – volume: 35 start-page: 37 year: 2001 end-page: 45 ident: bib21 article-title: Prevalence and prognostic value of quantified electroencephalogram (EEG) alterations in cirrhotic patients publication-title: J. Hepatol. – volume: 13 start-page: 303 year: 1998 end-page: 309 ident: bib12 article-title: Positron emission tomography in the study of hepatic encephalopathy publication-title: Metab. Brain Dis. – volume: 110 start-page: 1334 year: 1999 end-page: 1344 ident: bib3 article-title: Spectral versus visual EEG analysis in mild hepatic encephalopathy publication-title: Clin. Neurophysiol. – year: 1988 ident: bib31 article-title: Fractals – year: 1962 ident: bib30 article-title: Introduction to the Theory of Error – volume: 3 start-page: 75 year: 1986 end-page: 82 ident: bib27 article-title: The diagnosis and prevalence of subclinical hepatic encephalopathy in apparently healthy, ambulant, non-shunted patients with cirrhosis publication-title: J. Hepatol. – volume: 18 start-page: 1061 year: 1993 end-page: 1068 ident: bib11 article-title: Positron-emission tomographic localization of abnormalities of brain metabolism in patients with minimal hepatic encephalopathy publication-title: Hepatology – volume: 26 start-page: 3677 year: 1994 end-page: 3678 ident: bib10 article-title: Single-photon emission computed tomography with 99mTC- hexamethylpropyleneamineoxide in cirrhotic patients before and after liver transplantation publication-title: Transplant. Proc. – volume: 60 start-page: 646 year: 1973 end-page: 649 ident: bib22 article-title: Transection of the oesophagus for bleeding oesophageal varices publication-title: Br. J Surg. – volume: 1 start-page: 54 year: 2001 end-page: 60 ident: bib13 article-title: Applications of magnetic resonance spectroscopy to chronic liver disease publication-title: Clin. Med. – volume: 72 start-page: 573 year: 1977 end-page: 583 ident: bib24 article-title: Comparison of lactulose and neomycin in the treatment of chronic portal-systemic encephalopathy. A double blind controlled trial publication-title: Gastroenterology – reference: G.H. Klem, H.O. Lüders, H.H. Jasper, C. Elger, in: G. Deuschal, A. Eisen (Eds.), Elsevier, Amsterdam, 1999, pp. 3–6. – volume: 95 start-page: 2029 year: 2000 end-page: 2034 ident: bib34 article-title: The prognostic significance of subclinical hepatic encephalopathy publication-title: Am. J. Gastroenterol. – volume: 29 start-page: 1662 year: 1999 end-page: 1667 ident: bib1 article-title: Clinical features and survival of cirrhotic patients with subclinical cognitive alterations detected by the number connection test and computerized psychometric tests publication-title: Hepatology – volume: 19 start-page: 281 year: 2004 end-page: 312 ident: bib16 article-title: Methods for diagnosing hepatic encephalopathy in patients with cirrhosis: a multidimensional approach publication-title: Metab. Brain Dis. – volume: 11 start-page: 315 year: 1996 end-page: 327 ident: bib2 article-title: Diagnostic tools for the detection of subclinical hepatic encephalopathy: comparison of standard and computerized psychometric tests with spectral-EEG publication-title: Metab. Brain Dis. – volume: 57 start-page: 423 year: 1984 end-page: 426 ident: bib17 article-title: Objective measurement of hepatic encephalopathy by means of automated EEG analysis publication-title: Electroencephalogr. Clin. Neurophysiol. – volume: 2 start-page: 633 year: 1970 end-page: 636 ident: bib7 article-title: Method for measuring cerebral dysfunction in patients with liver disease publication-title: Br. Med. J. – year: 2000 ident: bib29 article-title: Random data publication-title: Analysis and Measurement Procedures – volume: 3 start-page: 298 year: 1983 end-page: 307 ident: bib6 article-title: Methods for assessing hepatic encephalopathy publication-title: Semin. Liver Dis. – volume: 19 start-page: 253 year: 2004 end-page: 267 ident: bib15 article-title: Characteristics of minimal hepatic encephalopathy publication-title: Metab. Brain Dis. – volume: 22 start-page: 541 year: 1977 end-page: 550 ident: bib25 article-title: Trailmaking and number-connection tests in the assessment of mental state in portal systemic encephalopathy publication-title: Am. J. Dig. Dis. – year: 1995 ident: bib26 article-title: Neuropsychological Assessment – volume: 20 start-page: 100 year: 1998 end-page: 106 ident: bib33 article-title: Nonlinear analysis of EEG in septic encephalopathy publication-title: Neurol. Res. – volume: 18 start-page: 63 year: 2003 end-page: 78 ident: bib35 article-title: Neuropsychological-neurophysiological alterations and brain atrophy in cirrhotic patients publication-title: Metab. Brain Dis. – year: 1995 ident: 10.1016/j.cmpb.2005.10.009_bib26 – ident: 10.1016/j.cmpb.2005.10.009_bib28 – volume: 26 start-page: 3677 year: 1994 ident: 10.1016/j.cmpb.2005.10.009_bib10 article-title: Single-photon emission computed tomography with 99mTC- hexamethylpropyleneamineoxide in cirrhotic patients before and after liver transplantation publication-title: Transplant. Proc. – volume: 1 start-page: 54 year: 2001 ident: 10.1016/j.cmpb.2005.10.009_bib13 article-title: Applications of magnetic resonance spectroscopy to chronic liver disease publication-title: Clin. Med. doi: 10.7861/clinmedicine.1-1-54 – volume: 2 start-page: 633 year: 1970 ident: 10.1016/j.cmpb.2005.10.009_bib7 article-title: Method for measuring cerebral dysfunction in patients with liver disease publication-title: Br. Med. J. doi: 10.1136/bmj.2.5710.633 – volume: 18 start-page: 7474 year: 1998 ident: 10.1016/j.cmpb.2005.10.009_bib32 article-title: Low doses of ethanol reduce evidence for nonlinear structure in brain activity publication-title: J. Neurosci. doi: 10.1523/JNEUROSCI.18-18-07474.1998 – volume: 11 start-page: 315 year: 1996 ident: 10.1016/j.cmpb.2005.10.009_bib2 article-title: Diagnostic tools for the detection of subclinical hepatic encephalopathy: comparison of standard and computerized psychometric tests with spectral-EEG publication-title: Metab. Brain Dis. doi: 10.1007/BF02029493 – volume: 18 start-page: 1061 year: 1993 ident: 10.1016/j.cmpb.2005.10.009_bib11 article-title: Positron-emission tomographic localization of abnormalities of brain metabolism in patients with minimal hepatic encephalopathy publication-title: Hepatology doi: 10.1002/hep.1840180508 – volume: 20 start-page: 100 year: 1998 ident: 10.1016/j.cmpb.2005.10.009_bib33 article-title: Nonlinear analysis of EEG in septic encephalopathy publication-title: Neurol. Res. doi: 10.1080/01616412.1998.11740490 – year: 2000 ident: 10.1016/j.cmpb.2005.10.009_bib29 article-title: Random data – year: 1962 ident: 10.1016/j.cmpb.2005.10.009_bib30 – volume: 19 start-page: 281 year: 2004 ident: 10.1016/j.cmpb.2005.10.009_bib16 article-title: Methods for diagnosing hepatic encephalopathy in patients with cirrhosis: a multidimensional approach publication-title: Metab. Brain Dis. doi: 10.1023/B:MEBR.0000043977.11113.2a – volume: 24 start-page: 556 year: 1996 ident: 10.1016/j.cmpb.2005.10.009_bib4 article-title: The diagnosis of subclinical hepatic encephalopathy in patients with cirrhosis using neuropsychological tests and automated electroencephalogram analysis publication-title: Hepatology doi: 10.1002/hep.510240316 – volume: 57 start-page: 423 year: 1984 ident: 10.1016/j.cmpb.2005.10.009_bib17 article-title: Objective measurement of hepatic encephalopathy by means of automated EEG analysis publication-title: Electroencephalogr. Clin. Neurophysiol. doi: 10.1016/0013-4694(84)90071-3 – volume: 3 start-page: 75 year: 1986 ident: 10.1016/j.cmpb.2005.10.009_bib27 article-title: The diagnosis and prevalence of subclinical hepatic encephalopathy in apparently healthy, ambulant, non-shunted patients with cirrhosis publication-title: J. Hepatol. doi: 10.1016/S0168-8278(86)80149-0 – volume: 110 start-page: 1334 year: 1999 ident: 10.1016/j.cmpb.2005.10.009_bib3 article-title: Spectral versus visual EEG analysis in mild hepatic encephalopathy publication-title: Clin. Neurophysiol. doi: 10.1016/S1388-2457(99)00076-0 – volume: 337 start-page: 1250 year: 1991 ident: 10.1016/j.cmpb.2005.10.009_bib9 article-title: Regional cerebral blood flow and cognitive function in patients with chronic liver disease publication-title: Lancet doi: 10.1016/0140-6736(91)92920-W – volume: 72 start-page: 573 year: 1977 ident: 10.1016/j.cmpb.2005.10.009_bib24 article-title: Comparison of lactulose and neomycin in the treatment of chronic portal-systemic encephalopathy. A double blind controlled trial publication-title: Gastroenterology doi: 10.1016/S0016-5085(77)80135-2 – volume: 3 start-page: 298 year: 1983 ident: 10.1016/j.cmpb.2005.10.009_bib6 article-title: Methods for assessing hepatic encephalopathy publication-title: Semin. Liver Dis. doi: 10.1055/s-2008-1040782 – volume: 27 start-page: 1517 year: 1998 ident: 10.1016/j.cmpb.2005.10.009_bib18 article-title: Visual attention in cirrhotic patients: a study on covert visual attention orienting publication-title: Hepatology doi: 10.1002/hep.510270608 – volume: 22 start-page: 541 year: 1977 ident: 10.1016/j.cmpb.2005.10.009_bib25 article-title: Trailmaking and number-connection tests in the assessment of mental state in portal systemic encephalopathy publication-title: Am. J. Dig. Dis. doi: 10.1007/BF01072510 – volume: 28 start-page: 45 year: 1998 ident: 10.1016/j.cmpb.2005.10.009_bib20 article-title: Subclinical hepatic encephalopathy impairs daily functioning publication-title: Hepatology doi: 10.1002/hep.510280108 – volume: 14 start-page: 141 year: 1992 ident: 10.1016/j.cmpb.2005.10.009_bib5 article-title: Quantitative EEG analysis and evoked potentials to measure (latent) hepatic encephalopathy publication-title: J. Hepatol. doi: 10.1016/0168-8278(92)90148-I – volume: 18 start-page: 63 year: 2003 ident: 10.1016/j.cmpb.2005.10.009_bib35 article-title: Neuropsychological-neurophysiological alterations and brain atrophy in cirrhotic patients publication-title: Metab. Brain Dis. doi: 10.1023/A:1021982719654 – volume: 35 start-page: 37 year: 2001 ident: 10.1016/j.cmpb.2005.10.009_bib21 article-title: Prevalence and prognostic value of quantified electroencephalogram (EEG) alterations in cirrhotic patients publication-title: J. Hepatol. doi: 10.1016/S0168-8278(01)00129-5 – volume: 19 start-page: 253 year: 2004 ident: 10.1016/j.cmpb.2005.10.009_bib15 article-title: Characteristics of minimal hepatic encephalopathy publication-title: Metab. Brain Dis. doi: 10.1023/B:MEBR.0000043975.01841.de – volume: 95 start-page: 2029 year: 2000 ident: 10.1016/j.cmpb.2005.10.009_bib34 article-title: The prognostic significance of subclinical hepatic encephalopathy publication-title: Am. J. Gastroenterol. doi: 10.1111/j.1572-0241.2000.02265.x – volume: 14 start-page: 30 issue: Suppl 1 year: 1996 ident: 10.1016/j.cmpb.2005.10.009_bib14 article-title: Proton magnetic resonance spectroscopy: the new gold standard for diagnosis of clinical and subclinical hepatic encephalopathy? publication-title: Dig. Dis. doi: 10.1159/000171581 – volume: 29 start-page: 1662 year: 1999 ident: 10.1016/j.cmpb.2005.10.009_bib1 article-title: Clinical features and survival of cirrhotic patients with subclinical cognitive alterations detected by the number connection test and computerized psychometric tests publication-title: Hepatology doi: 10.1002/hep.510290619 – year: 1988 ident: 10.1016/j.cmpb.2005.10.009_bib31 – volume: 60 start-page: 646 year: 1973 ident: 10.1016/j.cmpb.2005.10.009_bib22 article-title: Transection of the oesophagus for bleeding oesophageal varices publication-title: Br. J Surg. doi: 10.1002/bjs.1800600817 – volume: 2 start-page: 867 year: 1957 ident: 10.1016/j.cmpb.2005.10.009_bib8 article-title: The electroencephalograph in liver disease publication-title: Lancet doi: 10.1016/S0140-6736(57)90005-3 – volume: 17 start-page: 221 year: 2002 ident: 10.1016/j.cmpb.2005.10.009_bib23 article-title: Pathophysiology of hepatic encephalopathy: a new look at ammonia publication-title: Metab. Brain Dis. doi: 10.1023/A:1021989230535 – volume: 13 start-page: 303 year: 1998 ident: 10.1016/j.cmpb.2005.10.009_bib12 article-title: Positron emission tomography in the study of hepatic encephalopathy publication-title: Metab. Brain Dis. doi: 10.1023/A:1020684724992 – volume: 13 start-page: 159 year: 1998 ident: 10.1016/j.cmpb.2005.10.009_bib19 article-title: Study on the Sternberg paradigm in cirrhotic patients without overt hepatic encephalopathy publication-title: Metab. Brain Dis. doi: 10.1023/A:1020665431411
SSID	ssj0002556
Score	1.7918955
Snippet	Spectral EEG analysis in hepatic encephalopathy (HE) is usually performed disregarding the effect of epoch length, statistical errors and equipment noise. A...
SourceID	proquest pubmed crossref elsevier
SourceType	Aggregation Database Index Database Enrichment Source Publisher
StartPage	203
SubjectTerms	Aged Cognitive alterations Digital EEG Electrodes Electroencephalography - methods Encephalopathy Female Fibrosis - pathology Frequency-domain analysis Hepatic Encephalopathy - diagnosis Hepatic Encephalopathy - pathology Humans Liver - pathology Liver failure Male Middle Aged Models, Statistical Neurophysiology Reproducibility of Results Signal Processing, Computer-Assisted Software Time Factors Time-domain analysis
Title	Analysis of EEG tracings in frequency and time domain in hepatic encephalopathy
URI	https://www.clinicalkey.com/#!/content/1-s2.0-S0169260706000034 https://dx.doi.org/10.1016/j.cmpb.2005.10.009 https://www.ncbi.nlm.nih.gov/pubmed/16478642 https://www.proquest.com/docview/19429028 https://www.proquest.com/docview/67720879
Volume	81
WOSCitedRecordID	wos000236463600003&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D
hasFullText	1
inHoldings	1
isFullTextHit
isPrint
journalDatabaseRights	– providerCode: PRVESC databaseName: Elsevier SD Freedom Collection Journals 2021 customDbUrl: eissn: 1872-7565 dateEnd: 99991231 omitProxy: false ssIdentifier: ssj0002556 issn: 0169-2607 databaseCode: AIEXJ dateStart: 19950101 isFulltext: true titleUrlDefault: https://www.sciencedirect.com providerName: Elsevier
link	http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwtV1bb9MwFLa6DiFeJu5swPADb1Wq3BwnjxMqMMTGJIbUt8iJ7S1Tl1S9TPtb_EPOsZ20BXVcJF7SyokTx-eLz8XnQshbqXUcSME8KQvpxcBwPRGIxCviWGZc8TQSJrv-Z356mo7H2Vmv972NhbmZ8LpOb2-z6X8lNbQBsTF09i_I3d0UGuA_EB2OQHY4_hHh19OMjEYfsAhEaWpzVvVAz6zntE26hHXlB7K5FpVxd7xUU5O-Fb_16aWYNFiteGPXty0B4epOz12WAePhZe5vg_k3NuvPxBywZsPZh523z9Ju0M8quxUyPOlOwSKzEBdYF9MYZrt2qQaY8XCBkcpV3dhkkq7bmtUiWrdadOE0xxiyA2Nd-TAZK2eSeaBoWU6s7MqcclAFmC0s0S7dttqLg2i0vg770RpLD62n9i_cwhourobl9bSw5jXj6JeteGPnsfgVx4RD8hPfJPXZIbshZ1naJ7tHx6Pxp479Y043m1DevoOL1LJOhT8_aZs0tE3bMVLP-UOy59QVemRh9oj0VP2Y3D9xNH5CvrRoo42mgDbaoo1WNe3QRmHuKaKNWrThSYc2uom2p-Tb-9H5u4-eq9HhlcwPF16ZKJZhmjeW6AAtG1yyVBU6LEKmQdLhmSiCSEvhaxaJEBXWMmWKg9pfFGnsR89Iv25q9YLQIiuSMtMaZFIdswh-QXtQPJBSpkHJ_X0StHOVly6BPdZRmeStp-JVjvOLlVUZtsH87pNB12dq07fceXXUkiBvA5OBleaAlzt7sa6XE1utOPrbfm9aKuewpuNGnahVs5znQQZSIgj-269IQCn2Uw73eG7hsXo7DB5P4vDgH0f1kjxYfa-vSH8xW6rX5F55s6jms0Oyw8fpoYP8D2Zx2uA
linkProvider	Elsevier
openUrl	ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Analysis+of+EEG+tracings+in+frequency+and+time+domain+in+hepatic+encephalopathy&rft.jtitle=Computer+methods+and+programs+in+biomedicine&rft.au=Pascoli%2C+D.&rft.au=Gu%C3%A9rit%2C+J.M.&rft.au=Montagnese%2C+S.&rft.au=de+Tourtchaninoff%2C+M.&rft.date=2006-03-01&rft.pub=Elsevier+Ireland+Ltd&rft.issn=0169-2607&rft.eissn=1872-7565&rft.volume=81&rft.issue=3&rft.spage=203&rft.epage=212&rft_id=info:doi/10.1016%2Fj.cmpb.2005.10.009&rft.externalDocID=S0169260706000034
thumbnail_l	http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=0169-2607&client=summon
thumbnail_m	http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=0169-2607&client=summon
thumbnail_s	http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=0169-2607&client=summon