| fullrecord |
[{"key": "dc.contributor.author", "value": "Kulmala, Tanja", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2012-03-09T12:07:57Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2012-03-09T12:07:57Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2012", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1195609", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/37520", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4m\u00e4n pro gradu -tutkielman tarkoituksena oli selvitt\u00e4\u00e4 aivojen automaattisen muutoksen havaitsemisj\u00e4rjestelm\u00e4n toimintaa visuaalisessa j\u00e4rjestelm\u00e4ss\u00e4 tapahtumasidonnaisten her\u00e4tevasteiden (ERP) avulla. Lis\u00e4ksi tutkielmassa haluttiin selvitt\u00e4\u00e4 ik\u00e4\u00e4ntymisen mahdollisia vaikutuksia t\u00e4m\u00e4n j\u00e4rjestelm\u00e4n toimintaan vertailemalla toisiinsa terveiden nuorten aikuisten (n=19, 22-27 vuotta) ja ik\u00e4\u00e4ntyneiden (n=10, 69-95 vuotta) visuaalisia her\u00e4tevasteita N2- ja P3 -komponenteissa. Visuaalinen her\u00e4tevaste, jota tutkielmassa tarkasteltiin, oli poikkeavuusnegatiivisuus (mismatch negativity, MMN).\nTutkielmassa ERP:t rekister\u00f6itiin elektroenkefalografialla (EEG) ja passiivisen oddball -paradigman avulla. Tutkittaville n\u00e4ytettiin satunnaisesti suuntaa muuttavaa mustaa palkki\u00e4rsykett\u00e4 valkoisella taustalla. Samanaikaisesti heit\u00e4 pyydettiin keskittym\u00e4\u00e4n kuunnelman kuuntelemiseen. Her\u00e4tevastek\u00e4yrist\u00e4 analysoitiin erityisesti N2- (aikaikkuna 140-220 ms) ja P3 (280-380 ms) -komponentit. Komponenttien latenssit olivat ik\u00e4\u00e4ntyneill\u00e4 merkitsev\u00e4sti nuoria pidempi\u00e4. Amplitudierotusten perusteella N2 -komponentin ajanjaksolla nuorilla tuli esiin selke\u00e4 visuaalinen negatiivinen MMN -vaste okkipitaalikorteksilla (Oz, O2) sek\u00e4 positiivinen MMN -osakomponentti (mismatch response, MMR) sentraalisesti (Cz). Ik\u00e4\u00e4ntyneill\u00e4 N2 -komponentissa havaittiin positiiviinen MMN -osakomponentti frontaalisesti (Fc5). Negatiivinen MMN -vasteen osakomponentti oli ik\u00e4\u00e4ntyneill\u00e4 havaittavissa P3 -komponentissa frontaalisesti (Fz). Hypoteesin mukaisesti aivojen ik\u00e4\u00e4ntymismuutokset n\u00e4kyiv\u00e4t ik\u00e4\u00e4ntyneiden visuaalisessa prosessoinnissa impulssin kulku- ja k\u00e4sittelynopeuden hidastumisena sek\u00e4 aivojen esitietoisessa automaattisessa muutoksenhavaitsemisprosessissa. Lyhytkestoisen sensorisen muistin toiminta oli hidastunut ja visuaalinen prosessointi tapahtui suurelta osin frontaalikorteksilla visuaaliselle \u00e4rsykkeelle sensitiivisen okkipitaalikorteksin sijaan.", "language": null, "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Tanja Kulmala (tatukulm) on 2012-03-09 12:07:56.822901. Form: Pro gradu -lomake (1 tekij\u00e4) (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake-1-tekijae). JyX data:", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2012-03-09T12:07:57Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201203091393.pdf: 1343101 bytes, checksum: 64b10a4bdfaecfc94f195c19be8221e7 (MD5)\nlicense.html: 4985 bytes, checksum: 031772d52a0a76ea291b22e50c2470de (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2012-03-09T12:07:57Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201203091393.pdf: 1343101 bytes, checksum: 64b10a4bdfaecfc94f195c19be8221e7 (MD5)\nlicense.html: 4985 bytes, checksum: 031772d52a0a76ea291b22e50c2470de (MD5)\n Previous issue date: 2012", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "51 sivua", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "tapahtumasidonnainen her\u00e4tevaste (ERP)", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "visuaalinen mismatch negatiivisuus (vMMN)", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Ik\u00e4\u00e4ntymisen vaikutus visuaaliseen prosessointiin", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201203091393", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.dcmitype", "value": "Text", "language": "en", "element": "type", "qualifier": "dcmitype", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Liikuntatieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sport and Health Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Terveystieteiden laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Health Sciences", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Liikuntal\u00e4\u00e4ketiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Sport Medicine", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2012-03-09T12:07:57Z", "language": null, "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "5042", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ik\u00e4\u00e4ntyminen", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "prosessointi", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "aivot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
|