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[{"key": "dc.contributor.advisor", "value": "H\u00e4m\u00e4l\u00e4inen, Jarmo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Hakkarainen, Samuli", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2019-06-27T11:25:12Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2019-06-27T11:25:12Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2019", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/64882", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "T\u00e4ss\u00e4 tutkimuksessa tutkittiin aivojen lepotila-aktiivisuuden ja ty\u00f6muistin yhteytt\u00e4. Pyrkimyksen\u00e4 oli selvitt\u00e4\u00e4, korreloiko lepotila-aktiivisuuden aikana havaittava alfav\u00e4r\u00e4htely ty\u00f6muistin kapasiteetin kanssa. Tutkimuksen aineisto on l\u00e4ht\u00f6isin ReadTwin-tutkimuksesta, joka perustui Finntwin12- sek\u00e4 Finntwin16-projekteihin. ReadTwin-tutkimukseen osallistuneista valikoitiin 34 tutkittavaa t\u00e4h\u00e4n tutkielmaan (24 naista ja 10 miest\u00e4). Aineisto ker\u00e4ttiin vuosina 2015 ja 2016. Aineistonkeruuhetkell\u00e4 koehenkil\u00f6t olivat 28\u201329- ja 40\u201341-vuotiaita.\nTutkittavaa ilmi\u00f6t\u00e4 l\u00e4hestyttiin tarkastelemalla MEG-mittausmenetelm\u00e4ll\u00e4 kuvattua lepotila-aktiivisuutta, kun tutkittavat pitiv\u00e4t silmi\u00e4\u00e4n auki, sek\u00e4 tarkastelemalla heid\u00e4n suoriutumistaan WAIS-IV\u2013testin ty\u00f6muistia mittaavista teht\u00e4vist\u00e4. Suoriutumisesta muodostettiin ty\u00f6muisti-indeksi (WMI). Silm\u00e4t avoinna ker\u00e4tyn MEG-aineiston keskim\u00e4\u00e4r\u00e4inen pituus oli 7,65 minuuttia.\nT\u00e4ss\u00e4 tutkimuksessa oletettiin korkeammalla sijaitsevan alfav\u00e4r\u00e4htelyn huippupiikin olevan yhteydess\u00e4 parempaan ty\u00f6muistin kapasiteettiin. Toisena oletuksena oli, ett\u00e4 mit\u00e4 voimakkaampi huippupiikin amplitudi on, sit\u00e4 parempi on ty\u00f6muistin kapasiteetti.\nMEG-datan esik\u00e4sittely suoritettiin Maxfilter 2.0\u2122- ja MNE Python-ohjelmistoilla h\u00e4iri\u00f6tekij\u00f6iden poistamiseksi. T\u00e4m\u00e4n j\u00e4lkeen MNE Pythonilla noudettiin koehenkil\u00f6iden MEG-aineistosta alfav\u00e4r\u00e4htelyn huippupiikki sek\u00e4 sen amplitudi. Aineistosta valittiin 160 sekunnin aikaikkuna alfataajuuden laskemista varten. Osalle henkil\u00f6ist\u00e4 edell\u00e4 mainitut tarkastettiin ja poimittiin manuaalisesti, sill\u00e4 ohjelmiston noutama huippupiikki oli tarkasteluikkunan (8-13 Hz) rajalla ja se olisi v\u00e4\u00e4rist\u00e4nyt tuloksia. Huippupiikki, amplitudi ja ty\u00f6muisti-indeksi koodattiin muuttujiksi IBM SPSS Statistics versio 24-ohjelmistoon ja tilastollisena menetelm\u00e4n\u00e4 k\u00e4ytettiin parametritonta Spearmanin j\u00e4rjestyskorrelaatiokerrointa, sill\u00e4 kaksi ensimm\u00e4ist\u00e4 muuttujaa eiv\u00e4t olleet normaalijakautuneita. Tilastollista merkitsevyytt\u00e4 ty\u00f6muisti-indeksin ja alfav\u00e4r\u00e4htelyn huippupiikin, tai sen amplitudin v\u00e4lill\u00e4 ei l\u00f6ytynyt, joten ennakko-oletukset eiv\u00e4t saaneet tulosten perusteella tukea. T\u00e4m\u00e4 voi johtua eroista toisten julkaisujen tutkimusmenetelmiin n\u00e4hden, sattuman vaikutuksesta, tai siit\u00e4, ett\u00e4 aiemmissa tutkimuksissa saattoi virheellisesti olla positiivisia l\u00f6yd\u00f6ksi\u00e4. Jatkotutkimus olisi tarpeen etenkin tutkitun ilmi\u00f6n monipuolisemman selvitt\u00e4misen ja kouluissa tapahtuvan opetuksen kannalta, sill\u00e4 ty\u00f6muisti on l\u00e4sn\u00e4 monissa oppimiseen liittyviss\u00e4 prosesseissa. Jatkotutkimuksella voi saada lis\u00e4\u00e4 ymm\u00e4rryst\u00e4 oppimisen eroista ja siit\u00e4, johtuvatko erot osaltaan yksil\u00f6iden v\u00e4lisest\u00e4 vaihtelusta alfa-aktiivisuudessa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2019-06-27T11:25:12Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2019-06-27T11:25:12Z (GMT). No. of bitstreams: 0\n Previous issue date: 2019", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "21", "language": "", "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": "lepotila-aktiivisuus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "default mode network", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "lepotilaverkosto", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "alfa-aktiivisuus", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "alfav\u00e4r\u00e4htely", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "ty\u00f6muisti", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Aivojen lepotila-aktiivisuuden ja ty\u00f6muistin yhteys", "language": "", "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-201906273485", "language": "", "element": "identifier", "qualifier": "urn", "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": "Kasvatustieteiden ja psykologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Education and Psychology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Psykologian laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Psychology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Psykologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Psychology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"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": "restrictedAccess", "language": null, "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": "202", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "ty\u00f6muisti", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "aivot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "aktiivisuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "lepotila", "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.rights.accessrights", "value": "The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyv\u00e4skyl\u00e4 University Library (https://kirjasto.jyu.fi/en/workspaces/facilities).", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Tekij\u00e4 ei ole antanut lupaa avoimeen julkaisuun, joten aineisto on luettavissa vain Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6semalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat..", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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