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[{"key": "dc.contributor.advisor", "value": "Kujala, Jan", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Ekroos, Tuike", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-11-17T10:42:25Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-11-17T10:42:25Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/91950", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Jatkuva puhe on t\u00e4rke\u00e4 osa ihmisten v\u00e4list\u00e4 jokap\u00e4iv\u00e4ist\u00e4 kommunikaatiota. T\u00e4h\u00e4nastisessa tutkimuksessa on esitetty, ett\u00e4 puheen havaintoon liittyy niin periodista ja aperiodista aivotoimintaa kuin aivotoiminnan lukkiutumista puhe\u00e4rsykkeisiin. Toistaiseksi puheen havaintoon liittyvi\u00e4 neuraalisia vasteita on tutkittu p\u00e4\u00e4asiassa k\u00e4ytt\u00e4m\u00e4ll\u00e4 yksitt\u00e4isi\u00e4 puhe\u00e4rsykkeit\u00e4 kuten tavuja ja sanoja tai lauseita, jotka eiv\u00e4t t\u00e4ysin vastaa luonnollisissa tilanteissa tuotettuja puheen osia. Jatkuvan puheen havaitsemista on tutkittu v\u00e4h\u00e4n, eik\u00e4 puheelle tyypillisi\u00e4 vaikeustasojen ja ymm\u00e4rrett\u00e4vyyden eroja ole otettu huomioon. \nT\u00e4m\u00e4n tutkimuksen tarkoituksena oli tarkastella jatkuvan puheen havaintoon liittyvi\u00e4 aivovasteita puheen eri vaikeustasot ja puheen ymm\u00e4rrett\u00e4vyys huomioiden. T\u00e4m\u00e4 tehtiin tutkimalla eroja, joita on l\u00f6ydett\u00e4viss\u00e4 eri puhetilanteiden (vaikea, helppo ja vokoodattu puhe) v\u00e4lill\u00e4 erilaisissa aivotoiminnan tyypeiss\u00e4 eli periodisessa ja aperiodisessa aivotoiminnassa sek\u00e4 aivoaktivaation lukkiutumisessa puhe\u00e4rsykkeisiin. Tarkastelua tehtiin aivojen frontaalisilla, temporaalisilla ja parietaalisilla kortikaalisilla alueilla, joiden tiedet\u00e4\u00e4n olevan kielellisess\u00e4 prosessoinnissa keskeisi\u00e4. Tutkittavat (N = 14) olivat terveit\u00e4, \u00e4idinkielen\u00e4\u00e4n suomea puhuvia yliopisto-opiskelijoita. T\u00e4ss\u00e4 tutkimuksessa puheen ymm\u00e4rrett\u00e4vyys liittyy siihen miss\u00e4 m\u00e4\u00e4rin puhe\u00e4rsykkeiden spektraalisia ja temporaalisia yksityiskohtia on manipuloitu vokoodauksessa kun taas puheen vaikeudella viitataan lingvistiseen monimutkaisuuteen p\u00e4\u00e4huomion ollessa kieliopillisissa ja leksikaalisissa seikoissa.\nTutkimus vahvisti k\u00e4sityst\u00e4, ett\u00e4 puheen vastaanotto on neuraaliselta perustaltaan moninaista. Tilastollisesti merkitsevi\u00e4 eroja l\u00f6ydettiin kaikissa kolmessa tarkastellussa aivojen aktiivisuuden tyypiss\u00e4 verrattaessa vaikeustasoltaan ja ymm\u00e4rrett\u00e4vyydelt\u00e4\u00e4n erilaisia puhe\u00e4rsykkeit\u00e4 toisiinsa. L\u00f6ydetyt erot olivat kuitenkin jossain m\u00e4\u00e4rin odotusten vastaisia ja kesken\u00e4\u00e4n ristiriitaisia eik\u00e4 n\u00e4iden tulosten perusteella voidaan katsoa mink\u00e4\u00e4n tarkastelluista ilmi\u00f6ist\u00e4 selitt\u00e4v\u00e4n eri vaikeustasoisen puheen tai ymm\u00e4rrett\u00e4vyydelt\u00e4\u00e4n eroavien puhetyyppien aivoissa aiheuttamia prosesseja aivoissa. Tuloksia voidaankin pit\u00e4\u00e4 suuntaa antavina antaen. Ne antavat viitteit\u00e4 jatkuvan puheen havaintoon liittyvien aivotoimintojen moniulotteisesta luonteesta ja osoittavat tarvetta suurempaa otoskokoa ja kontrolloidumpia \u00e4rsykkeit\u00e4 hy\u00f6dynt\u00e4ville jatkotutkimuksille.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Continuous speech is an important component of everyday communication between people. Previous research has suggested that both periodic and aperiodic brain activity occur during speech perception. In addition, brain activity has been suggested to be locked to the acoustic envelopes of speech signals. However, the neural responses during speech perception have so far been researched mainly using either individual speech stimuli such as syllables and words or sentences that do not fully correspond to those produced in natural speech situations. There has been little examination of continuous speech perception, and the different levels of difficulty and intelligibility typical of speech content have not been taken into account earlier. \nThe aim of this study is to examine the brain responses to speech when different levels of speech difficulty and intelligibility have been taken into account. This was done by studying the differences that can be found between different speech settings (difficult, easy, and vocoded speech) in different types of brain activity measures, i.e., periodic and aperiodic brain activity, as well as in the locking of brain activity to speech stimuli. The examination was done in the frontal, temporal and parietal cortical regions of the brain, that are known to be central to linguistic processing. The participants (N = 14) were healthy, native Finnish-speaking university students. In this study, speech intelligibility refers to the extent to which spectral and temporal detail of stimuli has been manipulated in vocoding while preserving the amplitude envelope whereas speech difficulty level refers to linguistic complexity of stimuli when the focus is on grammatical and lexical complexity. \nThe study reinforced the notion that speech perception is diverse in its neural basis. Statistically significant differences were found in all three types of brain activity measures when comparing the perception of speech stimuli with different levels of difficulty and intelligibility. However, the observed differences were partly contrary to expectations and to some extent internally contradictory and there was no evidence for any neural phenomenon alone to comprehensively explain the processing in the brain caused by speech stimuli of varying degrees of difficulty and intelligibility. The results can therefore be considered indicative of the complex nature of the neural processes involved in the perception of continuous speech and they underscore the need for additional work that considers larger sample size and more controlled stimuli.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-11-17T10:42:25Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-11-17T10:42:25Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "67", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": null, "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "continuous speech", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "arrhythmic brain activity", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "phase-locking", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Periodic, aperiodic, and phase-locked brain activity in the perception of continuous speech with different levels of difficulty and intelligibility", "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-202311177970", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "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.copyright", "value": "\u00a9 The Author(s)", "language": null, "element": "rights", "qualifier": "copyright", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "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": "v\u00e4r\u00e4htelyt", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "puhe (puhuminen)", "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": "aivotutkimus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "MEG", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "oscillations", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "speech (phenomena)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "brain", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "brain research", "language": null, "element": "subject", "qualifier": "yso", "schema": 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