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[{"key": "dc.contributor.advisor", "value": "Javanainen, Arto", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Pirhonen, Jalmari", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Niva, Aleksi", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2024-12-11T06:25:39Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2024-12-11T06:25:39Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2024", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/98915", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Tutkielmassa tarkasteltiin Keski-Suomen Sairaala Novassa k\u00e4yt\u00f6ss\u00e4 ollutta EEG-\nmonitorointilaitteiston laadunvalvontaprosessia sek\u00e4 kehitettiin nykyisten menetelmien rinnalle uusi kalibrointilaitteisto, jolla pystyttiin v\u00e4hent\u00e4m\u00e4\u00e4n inhimillisi\u00e4\nvirheit\u00e4 sek\u00e4 mahdollisten uusintamittausten m\u00e4\u00e4r\u00e4\u00e4 automatisoimalla prosessia.\nEEG-vahvistimelle sy\u00f6tetty\u00e4 signaalia analysoitiin ohjelmalla, joka kehitettiin osana\ntutkielmaa. Sairaala Novan k\u00e4yt\u00f6ss\u00e4 on my\u00f6s MATLAB-pohjainen analyysiohjelma,\njolla suoritetaan EEG-vahvistimelle sy\u00f6tetyn signaalin amplituditarkastelu, mutta\nsignaalin jaksonaikojen tai taajuuden mittaamiseen ei ollut mit\u00e4\u00e4n toistettavissa\nolevaa menetelm\u00e4\u00e4.\nSignaalin lis\u00e4ksi uuden kalibrointilaitteen kehityksess\u00e4 huomioitiin tarve EEG-\nvahvistimeen liitettyjen kameran ja mikrofonin aikasynkronoinnille. Kalibrointilaitteen aikatarkkuudeksi signaalin sek\u00e4 \u00e4\u00e4ni- ja valoher\u00e4tteiden tuottamisessa mitattiin\noskilloskoopilla noin 3 ms.\nSairaalan k\u00e4yt\u00f6ss\u00e4 olevan MATLAB-ohjelman mukaan uuden kalibrointilaitteen\ntuottaman signaalin amplitudivaihtelu oli suurimmillaan 7,79 \u03bcV (5,07 % keskim\u00e4\u00e4r\u00e4isest\u00e4 amplitudista), kun vanhan kalibrointilaitteen amplitudivaihtelu oli suurimmillaan 9,92 \u03bcV (5,31 %). Tavoiteamplitudi molemmille laitteille oli 200 \u03bcV.\nTutkielman yhteydess\u00e4 tuotetulla analyysiohjelmalla uuden kalibrointilaitteen tuottaman signaalin taajuuksien keskihajonnaksi mitattiin suurimmillaan 0,017 Hz ja\namplitudin keskihajonnaksi 14,364 \u03bcV, kun vanhan kalibrointilaitteen taajuuksien\nsuurin keskihajonta oli 0,020 Hz ja amplitudin keskihajonta 20,885 \u03bcV.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "This thesis examined the quality control process used for EEG monitoring equipment\nat the Central Finland\u2019s Hospital Nova, and developed a new calibration device to\nsupplement existing methods. The new device enhances automation in calibration,\nreducing human errors and minimizing the need for potential re-measurements. The\nsignal was measured with an EEG amplifier and analyzed using an analysis program\ndeveloped as part of this thesis. Hospital Nova also uses a MATLAB-based program\nfor amplitude analysis of calibration signal measured with EEG amplifier; however,\nno repeatable method was available for measuring the signal\u2019s periods or frequency.\nIn addition to signal accuracy, the development of the new calibration device\ntook into account the need for time synchronization with a camera and microphone\nconnected to the EEG amplifier. The time accuracy of the calibration device for\ngenerating signal, audio, and light stimuli was measured with an oscilloscope at\napproximately 3 ms.\nAccording to the MATLAB program used by the hospital, the new calibration\ndevice\u2019s amplitude variation was at most 7.79 \u03bcV (5.07% of the average amplitude),\nwhile the old calibration device\u2019s amplitude variation reached a maximum of 9.92 \u03bcV\n(5.31%). The target signal amplitude for both devices was 200 \u03bcV. Using the new\nanalysis, the new calibration device\u2019s frequency standard deviation was measured at\na maximum of 0.017 Hz, with an amplitude standard deviation of 14.364 \u03bcV. For\nthe old calibration device, the maximum frequency standard deviation was 0.020 Hz,\nand amplitude standard deviation was 20.885 \u03bcV.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2024-12-11T06:25:38Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2024-12-11T06:25:39Z (GMT). No. of bitstreams: 0\n Previous issue date: 2024", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "80", "language": "", "element": "format", "qualifier": "extent", "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.title", "value": "EEG-laitteistojen kalibroinnin kehitt\u00e4minen Keski-Suomen Sairaala Novassa", "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-202412117728", "language": null, "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": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "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": "Elektroniikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Electronics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.collaborator", "value": "public", "language": "", "element": "contractresearch", "qualifier": "collaborator", "schema": "yvv"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "yvv.contractresearch.initiative", "value": "business", "language": "", "element": "contractresearch", "qualifier": "initiative", "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": "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": "4022", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "Arduino", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "signaalink\u00e4sittely", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "EEG", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "epilepsia", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mikro-ohjaimet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "mittauslaitteet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "sairaalat", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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