{"id":"https://openalex.org/W802706458","doi":null,"title":"Multichannel EEG Methods to Improve the Spatial Resolution of Cortical Potential Distribution and the Signal Quality of Deep Brain Sources","display_name":"Multichannel EEG Methods to Improve the Spatial Resolution of Cortical Potential Distribution and the Signal Quality of Deep Brain Sources","publication_year":2008,"publication_date":"2008-06-13","ids":{"openalex":"https://openalex.org/W802706458","mag":"802706458"},"language":"en","primary_location":{"id":"pmh:oai:trepo.tuni.fi:10024/115136","doi":null,"is_oa":false,"landing_page_url":"https://trepo.tuni.fi//handle/10024/115136","pdf_url":null,"source":{"id":"https://openalex.org/S4306401860","display_name":"Tampere University Institutional Repository (Tampere University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I150589677","host_organization_name":"Tampere University of Applied Sciences","host_organization_lineage":["https://openalex.org/I150589677"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"fi=Artikkeliv\u00e4it\u00f6skirja | en=Doctoral dissertation (article-based) |"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5002883821","display_name":"Outi V\u00e4is\u00e4nen","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Outi V\u00e4is\u00e4nen","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5002883821"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10429","display_name":"EEG and Brain-Computer Interfaces","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10429","display_name":"EEG and Brain-Computer Interfaces","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11601","display_name":"Neuroscience and Neural Engineering","score":0.000699999975040555,"subfield":{"id":"https://openalex.org/subfields/2804","display_name":"Cellular and Molecular Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10581","display_name":"Neural dynamics and brain function","score":0.00039999998989515007,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/multichannel-eeg","display_name":"multichannel EEG","score":0.9959999918937683},{"id":"https://openalex.org/keywords/spatial-resolution","display_name":"spatial resolution","score":0.8769999742507935},{"id":"https://openalex.org/keywords/inverse-problems","display_name":"inverse problems","score":0.6700000166893005},{"id":"https://openalex.org/keywords/measurement-noise","display_name":"measurement noise","score":0.8550000190734863},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"signal-to-noise ratio","score":0.9049999713897705},{"id":"https://openalex.org/keywords/reciprocity-theorem","display_name":"reciprocity theorem","score":0.7829999923706055},{"id":"https://openalex.org/keywords/lead-field","display_name":"lead field","score":0.7450000047683716},{"id":"https://openalex.org/keywords/auditory-brainstem-response","display_name":"auditory brainstem response","score":0.8989999890327454}],"concepts":[{"id":"https://openalex.org/C522805319","wikidata":"https://www.wikidata.org/wiki/Q179965","display_name":"Electroencephalography","level":2,"score":0.9088051915168762},{"id":"https://openalex.org/C21200559","wikidata":"https://www.wikidata.org/wiki/Q7451068","display_name":"Sensitivity (control systems)","level":2,"score":0.5905295014381409},{"id":"https://openalex.org/C135252773","wikidata":"https://www.wikidata.org/wiki/Q1567213","display_name":"Inverse problem","level":2,"score":0.49858736991882324},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.43623268604278564},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.42088502645492554},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.385320246219635},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.3649263083934784},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.30525243282318115},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.1855572760105133},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.15235549211502075},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.11933845281600952},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.08242788910865784},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.07875189185142517},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:trepo.tuni.fi:10024/115136","doi":null,"is_oa":false,"landing_page_url":"https://trepo.tuni.fi//handle/10024/115136","pdf_url":null,"source":{"id":"https://openalex.org/S4306401860","display_name":"Tampere University Institutional Repository (Tampere University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I150589677","host_organization_name":"Tampere University of Applied Sciences","host_organization_lineage":["https://openalex.org/I150589677"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"fi=Artikkeliv\u00e4it\u00f6skirja | en=Doctoral dissertation (article-based) |"},{"id":"mag:802706458","doi":null,"is_oa":false,"landing_page_url":"http://dspace.cc.tut.fi/dpub/handle/123456789/178","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":153,"referenced_works":["https://openalex.org/W9602500","https://openalex.org/W24656705","https://openalex.org/W105410447","https://openalex.org/W186738983","https://openalex.org/W188141512","https://openalex.org/W1485373823","https://openalex.org/W1542438509","https://openalex.org/W1586692934","https://openalex.org/W1883664232","https://openalex.org/W1964945061","https://openalex.org/W1966065237","https://openalex.org/W1966649650","https://openalex.org/W1967514785","https://openalex.org/W1969908041","https://openalex.org/W1970334084","https://openalex.org/W1972017450","https://openalex.org/W1973021517","https://openalex.org/W1973042443","https://openalex.org/W1975153169","https://openalex.org/W1979550071","https://openalex.org/W1979682485","https://openalex.org/W1980847843","https://openalex.org/W1981511716","https://openalex.org/W1985582058","https://openalex.org/W1985870495","https://openalex.org/W1985980444","https://openalex.org/W1986239646","https://openalex.org/W1988809583","https://openalex.org/W1990493255","https://openalex.org/W1993946228","https://openalex.org/W1994405693","https://openalex.org/W1995497399","https://openalex.org/W1996717576","https://openalex.org/W2000547023","https://openalex.org/W2001000543","https://openalex.org/W2001428189","https://openalex.org/W2003086444","https://openalex.org/W2005354252","https://openalex.org/W2005530192","https://openalex.org/W2006081856","https://openalex.org/W2006431055","https://openalex.org/W2007016537","https://openalex.org/W2008204492","https://openalex.org/W2008900935","https://openalex.org/W2010040374","https://openalex.org/W2010688471","https://openalex.org/W2010925570","https://openalex.org/W2011442719","https://openalex.org/W2011897157","https://openalex.org/W2017408522","https://openalex.org/W2017611530","https://openalex.org/W2018351439","https://openalex.org/W2018722298","https://openalex.org/W2019060398","https://openalex.org/W2020553670","https://openalex.org/W2020778078","https://openalex.org/W2022981781","https://openalex.org/W2023910133","https://openalex.org/W2027568813","https://openalex.org/W2034651386","https://openalex.org/W2035140091","https://openalex.org/W2036621880","https://openalex.org/W2037420423","https://openalex.org/W2037820911","https://openalex.org/W2042987495","https://openalex.org/W2043301888","https://openalex.org/W2046439808","https://openalex.org/W2046717323","https://openalex.org/W2050236517","https://openalex.org/W2056144146","https://openalex.org/W2056960157","https://openalex.org/W2058871194","https://openalex.org/W2059147492","https://openalex.org/W2059842459","https://openalex.org/W2060108923","https://openalex.org/W2060933076","https://openalex.org/W2062689759","https://openalex.org/W2062890119","https://openalex.org/W2063623344","https://openalex.org/W2063737034","https://openalex.org/W2068058980","https://openalex.org/W2068529368","https://openalex.org/W2076425146","https://openalex.org/W2079241687","https://openalex.org/W2080721047","https://openalex.org/W2081435823","https://openalex.org/W2085476956","https://openalex.org/W2085677001","https://openalex.org/W2091493015","https://openalex.org/W2091623371","https://openalex.org/W2093196811","https://openalex.org/W2093293159","https://openalex.org/W2093482175","https://openalex.org/W2097154524","https://openalex.org/W2100084292","https://openalex.org/W2100240292","https://openalex.org/W2101051970","https://openalex.org/W2105957367","https://openalex.org/W2107348639","https://openalex.org/W2108695203","https://openalex.org/W2108807060","https://openalex.org/W2109100179","https://openalex.org/W2109396074","https://openalex.org/W2111162783","https://openalex.org/W2111164568","https://openalex.org/W2113612206","https://openalex.org/W2113909411","https://openalex.org/W2117211770","https://openalex.org/W2117420048","https://openalex.org/W2120078534","https://openalex.org/W2121832332","https://openalex.org/W2122157128","https://openalex.org/W2125907691","https://openalex.org/W2126767504","https://openalex.org/W2128045702","https://openalex.org/W2128495200","https://openalex.org/W2129491824","https://openalex.org/W2130390610","https://openalex.org/W2131537855","https://openalex.org/W2133280862","https://openalex.org/W2135197719","https://openalex.org/W2140064412","https://openalex.org/W2141723543","https://openalex.org/W2141968979","https://openalex.org/W2144190073","https://openalex.org/W2149733709","https://openalex.org/W2150505551","https://openalex.org/W2150844196","https://openalex.org/W2151706602","https://openalex.org/W2151905575","https://openalex.org/W2153119670","https://openalex.org/W2153134014","https://openalex.org/W2153201406","https://openalex.org/W2153208799","https://openalex.org/W2153210305","https://openalex.org/W2153705731","https://openalex.org/W2159835457","https://openalex.org/W2159985196","https://openalex.org/W2160363272","https://openalex.org/W2160889553","https://openalex.org/W2164648874","https://openalex.org/W2168760079","https://openalex.org/W2170738061","https://openalex.org/W2238560187","https://openalex.org/W2405030298","https://openalex.org/W2408302551","https://openalex.org/W2412560454","https://openalex.org/W2519699747","https://openalex.org/W2536390524","https://openalex.org/W2764413235","https://openalex.org/W2798909945","https://openalex.org/W3083977607","https://openalex.org/W4317523492"],"related_works":["https://openalex.org/W2123114114","https://openalex.org/W1981854529","https://openalex.org/W2099492500","https://openalex.org/W2101178561","https://openalex.org/W7098860367","https://openalex.org/W1985870495","https://openalex.org/W7096671053","https://openalex.org/W7097317314","https://openalex.org/W2101748004","https://openalex.org/W6902479441"],"abstract_inverted_index":{"Electroencephalography":[0],"(EEG)":[1],"is":[2,82,228,241,370],"a":[3,30,66,231,297,310,335,361,387],"convenient":[4],"technique":[5],"for":[6,206,260,341],"studying":[7,161,353],"the":[8,11,15,18,60,87,91,98,125,137,140,149,158,162,177,187,192,224,234,237,244,250,256,264,274,282,317,320,331,377,393,408],"function":[9],"of":[10,17,23,62,72,97,109,116,128,139,144,153,165,176,179,189,191,233,249,266,277,284,302,319,334,347,366,376,379,392],"brain":[12,44,99,239,343],"non-invasively":[13],"from":[14],"surface":[16,318],"scalp.":[19,321],"The":[20,46,114,133,209,247,345,390],"greatest":[21],"advantages":[22],"EEG":[24,57,64,111,145,289,292,299,363],"are":[25,79,100,112,306],"its":[26,34],"temporal":[27],"resolution":[28,127,164,276],"on":[29,186,316],"millisecond":[31],"scale":[32],"and":[33,55,77,122,182,323],"affordability":[35],"compared":[36],"to":[37,42,74,85,147,173,268,313,329,338,372,385],"other":[38,134],"non-invasive":[39],"techniques":[40],"employed":[41],"register":[43],"activity.":[45],"development":[47],"in":[48,215,220],"amplifier":[49],"technology,":[50],"computerized":[51],"signal":[52],"processing":[53],"methods":[54],"modern":[56],"caps":[58],"make":[59],"application":[61,135,265],"multichannel":[63,92,110],"systems":[65,71,93],"feasible":[67],"objective.":[68],"Nowadays":[69],"measurement":[70,141,180,210,217],"up":[73,267],"256":[75,271],"electrodes":[76,272,315],"over":[78],"available.":[80],"It":[81],"thus":[83],"important":[84],"evaluate":[86],"benefits":[88],"obtained":[89,402],"with":[90,119,202,255,360,382],"when":[94,223],"different":[95],"functions":[96],"being":[101],"studied.":[102],"\\n\\nIn":[103],"this":[104],"thesis":[105],"two":[106,303],"opposite":[107],"applications":[108],"investigated.":[113],"first":[115],"these":[117],"deals":[118],"superficial":[120],"sources":[121],"concerns":[123,136],"improving":[124],"spatial":[126,163,275],"inverse":[129,193,235],"cortical":[130,166,225,278],"potential":[131,167,226,279],"distribution.":[132],"modification":[138],"sensitivity":[142,332],"distributions":[143],"leads":[146,293,384],"improve":[148,281],"signal-to-noise":[150],"ratio":[151],"(SNR)":[152],"signals":[154,285],"generated":[155,286],"deep":[156,288,342],"within":[157],"brain.":[159],"\\n\\nWhen":[160],"distribution,":[168],"special":[169],"attention":[170],"was":[171,200],"given":[172],"an":[174],"examination":[175],"effect":[178],"noise":[181,211],"relative":[183,261],"skull":[184,207,262],"resistivity":[185],"estimation":[188],"accuracy":[190],"solution.":[194],"A":[195],"three-layer":[196],"spherical":[197],"head":[198],"model":[199],"applied":[201,328],"new":[203,257],"realistic":[204,216,258],"estimates":[205,259],"resistivity.":[208],"levels":[212],"were":[213,294,327],"estimated":[214],"environments,":[218],"bearing":[219],"mind":[221],"that":[222,254,359,397],"distribution":[227,333],"studied":[229],"as":[230,243,406],"solution":[232],"problem,":[236],"entire":[238],"activity":[240],"considered":[242],"desired":[245],"signal.":[246],"results":[248,346,391],"theoretical":[251,394],"evaluation":[252,350],"show":[253,358],"resistivity,":[263],"128":[269],"-":[270],"improves":[273],"distribution.\\n\\nTo":[280],"SNR":[283],"by":[287,352,403],"sources,":[290],"multielectrode":[291,298,336,362],"developed.":[295],"Theoretically":[296],"lead":[300,324,337,364],"consists":[301],"terminals,":[304],"which":[305],"both":[307],"connected":[308],"through":[309],"resistor":[311],"network":[312],"several":[314],"Reciprocity":[322],"field":[325],"theorems":[326],"modify":[330],"be":[339,401],"optimal":[340],"sources.":[344],"preliminary":[348],"experimental":[349],"conducted":[351],"brainstem":[354],"auditory":[355],"evoked":[356],"potentials":[357],"consisting":[365],"114":[367],"electrodes,":[368],"it":[369],"sufficient":[371],"average":[373],"45":[374],"%":[375],"number":[378],"epochs":[380],"needed":[381],"bipolar":[383],"obtain":[386],"similar":[388],"SNR.":[389],"study":[395],"demonstrate":[396],"further":[398],"improvements":[399],"can":[400],"such":[404],"steps":[405],"optimizing":[407],"electrode":[409],"positions.":[410]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}