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[{"key": "dc.contributor.advisor", "value": "Astikainen, Piia", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Pentik\u00e4inen, Emmi", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2016-03-02T09:49:39Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2016-03-02T09:49:39Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2015", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1523725", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/48990", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ik\u00e4\u00e4ntymisen tiedet\u00e4\u00e4n vaikuttavan varhaisiin kognitiivisiin ja havaintotoimintoihin sek\u00e4 niit\u00e4 heijastaviin aivojen s\u00e4hk\u00f6isiin her\u00e4tevasteisiin. Sek\u00e4 kuulo- ett\u00e4 tuntoj\u00e4rjestelm\u00e4ss\u00e4 toistuvan \u00e4rsykkeen aikaansaamien varhaisten vasteiden on havaittu olevan ik\u00e4\u00e4ntyneill\u00e4 voimakkaampia kuin\nnuorilla. T\u00e4m\u00e4 kertoo ik\u00e4\u00e4ntyneiden heikommasta kyvyst\u00e4 sulkea pois ep\u00e4olennaisia \u00e4rsykkeit\u00e4. My\u00f6hempien vasteiden, kuten poikkeavuusnegatiivisuuden (mismatch negativity, MMN), on havaittu heikkenev\u00e4n ik\u00e4\u00e4ntyneill\u00e4. T\u00e4ss\u00e4 tutkimuksessa tarkasteltiin ik\u00e4\u00e4ntymisen vaikutuksia her\u00e4tevasteisiin passiivisessa oddball-kokeessa, jossa \u00e4rsykkeet muodostuivat kuulo- ja tunto\u00e4rsykkeiden yhdistelmist\u00e4. T\u00e4m\u00e4n koeasetelman oletettiin tuovan hyvin esille ik\u00e4\u00e4ntymiseen liittyv\u00e4n heikkenemisen kognitiivisissa toiminnoissa, sill\u00e4 \u00e4rsykeyhdistelmien havaitseminen vaatii monimutkaisia kognitiivisia prosesseja. 44 ik\u00e4\u00e4ntyneelle (63-79 vuotta) ja 41 nuorelle (20-30 vuotta) koehenkil\u00f6lle esitettiin toistuvia \u00e4rsykkeit\u00e4, joiden joukossa esiintyi satunnaisesti s\u00e4\u00e4nn\u00f6st\u00e4 poikkeavia \u00e4rsykkeit\u00e4. Kuulo- ja tunto\u00e4rsykkeiden yhdistelm\u00e4t saivat aikaan P50 ja N1 vasteet molemmissa ik\u00e4ryhmiss\u00e4, ja ik\u00e4\u00e4ntyneiden vasteet olivat voimakkaampia molemmissa vasteissa. Eroja toistuvan ja poikkeavan \u00e4rsykkeen v\u00e4lill\u00e4 ei kuitenkaan havaittu, mik\u00e4 viittaa siihen, ett\u00e4 \u00e4rsykeyhdistelmien v\u00e4lisi\u00e4 eroja ei kyetty havaitsemaan automaattisesti. Tulokset osoittavat, ett\u00e4 ik\u00e4\u00e4ntyneiden heikentynyt kyky\nsuodattaa pois ep\u00e4olennaisia \u00e4rsykkeit\u00e4 n\u00e4kyy my\u00f6s tilanteessa, jossa \u00e4rsykkeet muodostuvat kahden\neri aistij\u00e4rjestelm\u00e4n \u00e4rsykkeiden yhdistelmist\u00e4. On mahdollista, ett\u00e4 n\u00e4m\u00e4 aivojen toiminnan tasolla tapahtuvat muutokset vaikuttavat ik\u00e4\u00e4ntyneiden toimintakykyyn arjessa.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Event-related potentials (ERPs) reflecting early perceptual and cognitive functions are known to be \naffected by aging. In both auditory and somatosensory modalities, early responses to repetitive stimuli seem to be enhanced in amplitude in aged participants, indicating declined gating of irrelevant stimuli. On the other hand, later responses, such as the mismatch negativity (MMN), are attenuated compared\nto young adults. In the present study, the effects of aging on ERPs were investigated in a passive, crossmodal oddball condition, where frequent standard and infrequent deviant stimuli were presented. This stimulus condition was assumed to be effective in revealing aging-related decline in cognitive functions since it requires complex cognitive computations. The responses to auditory-somatosensory stimuli\nwere recorded from 44 aged (63-79 years) and 41 young (20-30 years) participants. The cross-modal stimuli elicited P50 and N1 responses in both age groups, the aged showing larger amplitudes for both responses. However, there were no differences between deviant and standard stimuli. Thus, no MMNs were elicited in either of the groups, suggesting that the cross-modal stimuli could not be differentiated automatically. The results indicate that insufficient sensory gating of multisensory stimuli is evident in aged. It is possible that these changes in brain level affect the functioning of the elderly in their\neveryday lives.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Miia Hakanen (mihakane) on 2016-03-02 09:49:38.841315. Form: Admin-lomake opinn\u00e4ytteiden julkaisuun (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/admin-lomake-opinnaytteet). JyX data: [jyx_publishing-allowed (fi) =False]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2016-03-02T09:49:39Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201603021742.pdf: 2710060 bytes, checksum: 5c4e1bfb3ded71b64508de112943e99a (MD5)\nlicense.html: 107 bytes, checksum: a7d86e598caa500b1b433bbb9dc8ef1c (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2016-03-02T09:49:39Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201603021742.pdf: 2710060 bytes, checksum: 5c4e1bfb3ded71b64508de112943e99a (MD5)\nlicense.html: 107 bytes, checksum: a7d86e598caa500b1b433bbb9dc8ef1c (MD5)\n Previous issue date: 2015", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (31 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": "eng", "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": "ik\u00e4\u00e4ntyminen", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "aivojen her\u00e4tevasteet", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kuulo- ja tuntoaistimusten yhdist\u00e4minen", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "aistitiedon suodattaminen", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Event-related potentials to cross-modal stimuli reveal altered sensory gating in aged", "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-201603021742", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": 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Aineisto on luettavissa Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6asemalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat.", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "This material has a restricted access due to copyright reasons. It can be read at the workstation at Jyv\u00e4skyl\u00e4 University Library reserved for the use of archival materials: https://kirjasto.jyu.fi/en/workspaces/facilities.", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
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