{"id":"https://openalex.org/W2049747737","doi":"https://doi.org/10.1002/mrm.1910400206","title":"Amplitude response and stimulus presentation frequency response of human primary visual cortex using BOLD EPI at 4 T","display_name":"Amplitude response and stimulus presentation frequency response of human primary visual cortex using BOLD EPI at 4 T","publication_year":1998,"publication_date":"1998-08-01","ids":{"openalex":"https://openalex.org/W2049747737","doi":"https://doi.org/10.1002/mrm.1910400206","mag":"2049747737","pmid":"https://pubmed.ncbi.nlm.nih.gov/9702702"},"language":"en","primary_location":{"id":"doi:10.1002/mrm.1910400206","doi":"https://doi.org/10.1002/mrm.1910400206","is_oa":false,"landing_page_url":"https://doi.org/10.1002/mrm.1910400206","pdf_url":null,"source":{"id":"https://openalex.org/S111160002","display_name":"Magnetic Resonance in Medicine","issn_l":"0740-3194","issn":["0740-3194","1522-2594"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","doyens","jufo-1","ki-jl-2","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Magnetic Resonance in Medicine","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"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/A5050701052","display_name":"Christopher G. Thomas","orcid":"https://orcid.org/0000-0002-5209-8797","observed_orcids":["https://orcid.org/0000-0002-5209-8797"]},"institutions":[{"id":"https://openalex.org/I125749732","display_name":"Western University","ror":"https://ror.org/02grkyz14","country_code":"CA","type":"education","lineage":["https://openalex.org/I125749732"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Christopher G. Thomas","raw_affiliation_strings":["Department of Medical Biophysics, University of Western Ontario, London, Canada","Department of Medical Biophysics, University of Western Ontario, Ontario, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Medical Biophysics, University of Western Ontario, London, Canada","institution_ids":["https://openalex.org/I125749732"]},{"raw_affiliation_string":"Department of Medical Biophysics, University of Western Ontario, Ontario, Canada","institution_ids":["https://openalex.org/I125749732"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5012883431","display_name":"Ravi S. Menon","orcid":"https://orcid.org/0000-0002-7916-0263","observed_orcids":["https://orcid.org/0000-0002-7916-0263"]},"institutions":[{"id":"https://openalex.org/I125749732","display_name":"Western University","ror":"https://ror.org/02grkyz14","country_code":"CA","type":"education","lineage":["https://openalex.org/I125749732"]},{"id":"https://openalex.org/I4405252475","display_name":"Robarts Research Institute","ror":"https://ror.org/01psf3m26","country_code":"CA","type":"facility","lineage":["https://openalex.org/I125749732","https://openalex.org/I4405252475"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Ravi S. Menon","raw_affiliation_strings":["Department of Medical Biophysics, University of Western Ontario, Ontario, Canada","Department of Radiology, University of Western Ontario, Ontario, Canada","Laboratory for Functional Magnetic Resonance Research, John P. Robarts Research Institute, London, Ontario, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Medical Biophysics, University of Western Ontario, Ontario, Canada","institution_ids":["https://openalex.org/I125749732"]},{"raw_affiliation_string":"Department of Radiology, University of Western Ontario, Ontario, Canada","institution_ids":["https://openalex.org/I125749732"]},{"raw_affiliation_string":"Laboratory for Functional Magnetic Resonance Research, John P. Robarts Research Institute, London, Ontario, Canada","institution_ids":["https://openalex.org/I4405252475"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5012883431"],"corresponding_institution_ids":["https://openalex.org/I125749732","https://openalex.org/I4405252475"],"apc_list":{"value":3680,"currency":"USD","value_usd":3680},"apc_paid":null,"fwci":4.5188,"has_fulltext":false,"cited_by_count":77,"citation_normalized_percentile":{"value":0.9400764,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"40","issue":"2","first_page":"203","last_page":"209"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9951000213623047,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10378","display_name":"Advanced MRI Techniques and Applications","score":0.9951000213623047,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11304","display_name":"Advanced Neuroimaging Techniques and Applications","score":0.001500000013038516,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10427","display_name":"Visual perception and processing mechanisms","score":0.0007999999797903001,"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/primary-visual-cortex","display_name":"primary visual cortex","score":0.9610000252723694},{"id":"https://openalex.org/keywords/bold-signal","display_name":"BOLD signal","score":0.6399999856948853},{"id":"https://openalex.org/keywords/hemodynamic-response","display_name":"hemodynamic response","score":0.8970000147819519},{"id":"https://openalex.org/keywords/echo-time-dependence","display_name":"echo time dependence","score":0.8550000190734863}],"concepts":[{"id":"https://openalex.org/C26170363","wikidata":"https://www.wikidata.org/wiki/Q1981408","display_name":"Haemodynamic response","level":4,"score":0.7021893262863159},{"id":"https://openalex.org/C19743564","wikidata":"https://www.wikidata.org/wiki/Q25378119","display_name":"Flicker","level":2,"score":0.6831331849098206},{"id":"https://openalex.org/C2779918689","wikidata":"https://www.wikidata.org/wiki/Q3771842","display_name":"Stimulus (psychology)","level":2,"score":0.630183219909668},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.6070820689201355},{"id":"https://openalex.org/C2779345533","wikidata":"https://www.wikidata.org/wiki/Q75785","display_name":"Visual cortex","level":2,"score":0.6061809062957764},{"id":"https://openalex.org/C180205008","wikidata":"https://www.wikidata.org/wiki/Q159190","display_name":"Amplitude","level":2,"score":0.5676620602607727},{"id":"https://openalex.org/C46141821","wikidata":"https://www.wikidata.org/wiki/Q209402","display_name":"Nuclear magnetic resonance","level":1,"score":0.5615881681442261},{"id":"https://openalex.org/C168110828","wikidata":"https://www.wikidata.org/wiki/Q1331626","display_name":"Spectral density","level":2,"score":0.46125850081443787},{"id":"https://openalex.org/C2779226451","wikidata":"https://www.wikidata.org/wiki/Q903809","display_name":"Functional magnetic resonance imaging","level":2,"score":0.41195109486579895},{"id":"https://openalex.org/C522805319","wikidata":"https://www.wikidata.org/wiki/Q179965","display_name":"Electroencephalography","level":2,"score":0.4101671278476715},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.3936747908592224},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.2852194905281067},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.25126680731773376},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.16988074779510498},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.1367122232913971},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10211491584777832},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.08095261454582214},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C84393581","wikidata":"https://www.wikidata.org/wiki/Q82642","display_name":"Blood pressure","level":2,"score":0.0},{"id":"https://openalex.org/C2777953023","wikidata":"https://www.wikidata.org/wiki/Q1073121","display_name":"Heart rate","level":3,"score":0.0},{"id":"https://openalex.org/C542102704","wikidata":"https://www.wikidata.org/wiki/Q183257","display_name":"Psychotherapist","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005425","descriptor_name":"Flicker Fusion","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D005583","descriptor_name":"Fourier Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007091","descriptor_name":"Image Processing, Computer-Assisted","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":true},{"descriptor_ui":"D008279","descriptor_name":"Magnetic Resonance Imaging","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":true},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012684","descriptor_name":"Sensory Thresholds","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D014793","descriptor_name":"Visual Cortex","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D017352","descriptor_name":"Echo-Planar Imaging","qualifier_ui":"Q000295","qualifier_name":"instrumentation","is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1002/mrm.1910400206","doi":"https://doi.org/10.1002/mrm.1910400206","is_oa":false,"landing_page_url":"https://doi.org/10.1002/mrm.1910400206","pdf_url":null,"source":{"id":"https://openalex.org/S111160002","display_name":"Magnetic Resonance in Medicine","issn_l":"0740-3194","issn":["0740-3194","1522-2594"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-c","doyens","jufo-1","ki-jl-2","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Magnetic Resonance in Medicine","raw_type":"journal-article"},{"id":"pmid:9702702","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/9702702","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Magnetic resonance in medicine","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6240000128746033,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W856337662","https://openalex.org/W1898723177","https://openalex.org/W1997232604","https://openalex.org/W1998394119","https://openalex.org/W1999352136","https://openalex.org/W2002660165","https://openalex.org/W2003329537","https://openalex.org/W2007831648","https://openalex.org/W2009494091","https://openalex.org/W2014875176","https://openalex.org/W2018162020","https://openalex.org/W2028343350","https://openalex.org/W2028575667","https://openalex.org/W2029683698","https://openalex.org/W2030382531","https://openalex.org/W2039351712","https://openalex.org/W2040486018","https://openalex.org/W2043298666","https://openalex.org/W2043561221","https://openalex.org/W2047046337","https://openalex.org/W2048879756","https://openalex.org/W2060605975","https://openalex.org/W2062888579","https://openalex.org/W2064879316","https://openalex.org/W2066313169","https://openalex.org/W2071714163","https://openalex.org/W2085523446","https://openalex.org/W2093366270","https://openalex.org/W2111609296","https://openalex.org/W2133631302","https://openalex.org/W2238856985","https://openalex.org/W2420669344","https://openalex.org/W4241977894"],"related_works":["https://openalex.org/W2312330178","https://openalex.org/W2042891213","https://openalex.org/W2067272695","https://openalex.org/W2125234658","https://openalex.org/W1994626667","https://openalex.org/W3018175164","https://openalex.org/W2119589407","https://openalex.org/W2046390003","https://openalex.org/W2159367198","https://openalex.org/W161607647"],"abstract_inverted_index":{"Detailed":[0],"measurement":[1],"of":[2,23,43,51,125],"the":[3,44,77,81,86,91,96,108,121,126,131,135,139],"neural":[4,66],"response":[5,46,58,79],"to":[6,47,62,80,116,144],"flicker":[7,21,52],"frequency":[8,22,84],"using":[9],"functional":[10],"MRI":[11],"(fMRI)":[12],"were":[13,142],"made.":[14],"The":[15,40,56,74,123],"fMRI":[16,38,110],"signal":[17],"peaks":[18],"at":[19,90],"a":[20],"8":[24],"Hz":[25],"in":[26,29,120],"human":[27],"V1,":[28],"agreement":[30],"with":[31],"previous":[32],"positron":[33],"emission":[34],"tomography":[35],"(PET)":[36],"and":[37,85,106,138],"experiments.":[39],"modulation":[41,67],"amplitude":[42],"hemodynamic":[45,57],"varying":[48],"continuous":[49],"periods":[50,69],"stimulation":[53],"was":[54,59],"measured.":[55],"not":[60],"observed":[61],"be":[63,101,145],"modulated":[64],"by":[65],"for":[68,103],"shorter":[70],"than":[71],"6.7":[72],"s.":[73],"resemblance":[75],"between":[76],"BOLD":[78],"stimulus":[82],"presentation":[83],"base-line":[87,109,117,128],"power":[88,111,129,133],"spectra":[89],"same":[92,97],"frequencies":[93],"suggests":[94],"that":[95,107],"underlying":[98],"mechanism":[99],"could":[100],"responsible":[102],"both":[104],"curves":[105],"spectrum":[112],"is":[113],"probably":[114],"due":[115],"electrical":[118],"activity":[119],"brain.":[122],"integrals":[124],"resting":[127],"spectrum,":[130,134],"background":[132],"respiration":[136],"component,":[137],"cardiac":[140],"component":[141],"found":[143],"linearly":[146],"dependent":[147],"on":[148],"TE.":[149]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":4},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":3}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}