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[{"key": "dc.contributor.advisor", "value": "Astikainen, Piia", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Kirjavainen, Ville", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2016-02-23T10:41:15Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2016-02-23T10:41:15Z", "language": "", "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:1522913", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/48899", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Ik\u00e4\u00e4ntymiseen liittyv\u00e4t muutokset auditiivisissa her\u00e4tevasteissa ja niiden yhteys neuropsykologisiin testeihin.\r\n\r\nIk\u00e4\u00e4ntyminen on yhteydess\u00e4 muutoksiin sek\u00e4 aistinvaraisessa prosessoinnissa ett\u00e4 kognitiivisessa toiminnassa. Kognitiivisten ja aistinvaraisten tapahtumien hermostollista aktivaatiota aivoissa usein tutkitaan her\u00e4tevasteilla elektroenkefalografiamenetelm\u00e4ll\u00e4. Vaikka \u00e4\u00e4nien prosessointia ja sen yhteytt\u00e4 kognitiivisiin kykyihin on aikaisemmin tutkittu, nuorten ja ik\u00e4\u00e4ntyneiden vertailua k\u00e4sitt\u00e4vi\u00e4 tutkimuksia on hyvin v\u00e4h\u00e4n. T\u00e4ss\u00e4 tutkimuksessa tarkasteltiin her\u00e4tevasteita auditiivisiin \u00e4rsykkeisiin ja kognitiivisia testej\u00e4 nuorilla (N = 41) ja ik\u00e4\u00e4ntyneill\u00e4 (N = 43) osallistujilla. Tutkimus hy\u00f6dynsi poikkeavuusnegatiivisuutta, joka on muistipohjainen vaste automaattiseen muutoksenhavaitsemiseen. Poikkeavuusnegatiivisuutta k\u00e4ytettiin mitattaessa aivojen kyky\u00e4 havaita muutoksia \u00e4\u00e4nitaajuuksissa, ja oletettiin, ett\u00e4 ik\u00e4\u00e4ntyneill\u00e4 voimakkuuden muutokset viittaisivat kognitiiviseen heikkenemiseen. Kuuloaistiin liittyv\u00e4\u00e4 poikkeavuusnegatiivisuutta tutkittiin koeasetelmassa, jossa tutkittava ei kiinnitt\u00e4nyt huomiota \u00e4\u00e4ni\u00e4rsykkeisiin ja osa \u00e4rsykkeist\u00e4 oli poikkeavia taajuudeltaan. Usein esitetyt toistuvat \u00e4rsykkeet korvattiin harvoin ja satunnaisesti taajuudeltaan poikkeavilla \u00e4rsykkeill\u00e4. Kuten oletettiin, esitetyt \u00e4rsykkeet saivat aikaan poikkeavuusnegatiivisuusvasteita ja tarkkaavuuteen liittyvi\u00e4 P2-vasteita. Sek\u00e4 poikkeavuusnegatiivisuusvasteet ett\u00e4 P2-vasteet \u00e4\u00e4niin olivat ik\u00e4\u00e4ntyneill\u00e4 matalampia voimakkuudeltaan verrattuna nuoriin. My\u00f6s, ik\u00e4\u00e4ntyneiden kognitiivisten testien tuloksia verrattiin heid\u00e4n poikkeavuusnegatiivisuusvasteiden voimakkuuksiin. Voimakkaimmat korrelaatiot olivat Stroop-testiss\u00e4 tehtyjen virheiden ja poikkeavuusnegatiivisuuden v\u00e4lill\u00e4. L\u00f6yd\u00f6kset viittaavat siihen, ett\u00e4 kognitiivinen heikkeneminen on yleist\u00e4 my\u00f6s terveill\u00e4, tyypillisesti ik\u00e4\u00e4ntyvill\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Aging is related to changes in both sensory processing and cognitive functioning. The neural activation of cognitive and sensory processes in the brain is often investigated with event-related potentials (ERP) elicited in electroencephalography (EEG). Whereas auditory processing as measured by ERPs and its relationship to cognitive abilities has been studied, there are only few investigations comparing young and elderly adults. To this end, ERPs to auditory stimuli and a set of cognitive tests were examined in young (N = 41) and elderly (N = 43) participants. The study employed the oddball stimulus paradigm in which the mismatch negativity (MMN), a memory-based response to automatic change detection is elicited. Here MMN was applied to measure brain\u2019s ability to detect changes in sound frequency and it was assumed that amplitude modulation of the MMN in the group of elderly would indicate the cognitive decline in this group. Auditory MMN was investigated in a passive oddball paradigm in which frequently presented standard tones were rarely and randomly replaced by a deviant tone of different frequency. As expected, the stimuli evoked MMN and an attention-related P2 response. Both MMN and P2 responses were attenuated in aged compared to young. Additionally, the ERPs and cognitive test scores were correlated in the group of elderly participants. The strongest correlations were between errors made in the Stroop task and MMN. The results suggest that cognitive decline is prevalent also in healthy, normal aging.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Miia Hakanen (mihakane) on 2016-02-23 10:41:15.211567. 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 2016-02-23T10:41:15Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201602231659.pdf: 1414903 bytes, checksum: f6be8571f659d87cbbc452bc80e1b788 (MD5)\r\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 2016-02-23T10:41:15Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201602231659.pdf: 1414903 bytes, checksum: f6be8571f659d87cbbc452bc80e1b788 (MD5)\r\nlicense.html: 107 bytes, checksum: a7d86e598caa500b1b433bbb9dc8ef1c (MD5)\r\n Previous issue date: 2015", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (42 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": "aging", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "auditory change detection", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "cognitive tests", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "event-related potential (ERP)", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "mismatch negativity (MMN)", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Aging-associated changes in auditory event-related potentials and their correlation to neuropsychological measures", "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-201602231659", "language": null, "element": "identifier", 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"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": "Psykologia", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Psychology", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2016-02-23T10:41:16Z", "language": "", "element": "date", "qualifier": "updated", "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": "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": "202", "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": "kognitiiviset prosessit", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "kuulohavainnot", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "toiminnanohjaus (psykologia)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, 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