{"id":876,"date":"2019-09-18T12:45:41","date_gmt":"2019-09-18T10:45:41","guid":{"rendered":"https:\/\/www.festivalvedy.sk\/wp2\/metoda-na-meranie-latencie-evokovaneho-potencialu-p300-pomocou-bioradia\/"},"modified":"2019-09-18T12:45:41","modified_gmt":"2019-09-18T10:45:41","slug":"metoda-na-meranie-latencie-evokovaneho-potencialu-p300-pomocou-bioradia","status":"publish","type":"post","link":"https:\/\/www.festivalvedy.sk\/wp2\/metoda-na-meranie-latencie-evokovaneho-potencialu-p300-pomocou-bioradia\/","title":{"rendered":"Met\u00f3da na meranie latencie evokovan\u00e9ho potenci\u00e1lu P300 pomocou BioRadia"},"content":{"rendered":"<p>Autor\/autori: J\u00e1n Mederly  <\/p>\n<p>Evokovan\u00fd potenci\u00e1l P300 je reakcia mozgu na stimul. Je zaznamen\u00e1van\u00e1 pomocou EEG. \u010cas medzi stimulom a sign\u00e1lom P300 (latencia P300) odzrkad\u013euje kognit\u00edvnu funk\u010dnos\u0165 mozgu, hlavne procesov zah\u0155\u0148aj\u00facich pozornos\u0165 a pam\u00e4\u0165. Napr\u00edklad viacer\u00e9 \u0161t\u00fadie u\u017e zistili, \u017ee latencia P300 sa pri Alzheimerovej chorobe zv\u00e4\u010d\u0161uje. Tak\u017ee P300 sa d\u00e1 pou\u017ei\u0165 ako neinvaz\u00edvna met\u00f3da na zistenie tejto choroby.<br \/>\nCie\u013eom mojej pr\u00e1ce bolo n\u00e1js\u0165 sp\u00f4sob, ako zis\u0165ova\u0165 latenciu P300 pomocou BioRadia. BioRadio je pr\u00edstroj na zaznamen\u00e1vanie r\u00f4znych elektrick\u00fdch sign\u00e1lov z povrchu \u013eudsk\u00e9ho tela.<br \/>\nVych\u00e1dzam zo v\u0161eobecnej met\u00f3dy na ur\u010denie P300: n\u00e1hodne je generovan\u00fd jeden z dvoch t\u00f3nov, pri\u010dom jeden je pravdepodobnej\u0161\u00ed. Subjekt si m\u00e1 v\u0161\u00edma\u0165 zriedkavej\u0161\u00ed t\u00f3n, ktor\u00fd funguje ako stimul. Potom sa samostatne spriemeruj\u00fa tie \u010dasti EEG sign\u00e1lu, ktor\u00e9 boli nameran\u00e9, ke\u010f zaznel menej pravdepodobn\u00fd t\u00f3n a samostatne tie, ktor\u00e9 boli nameran\u00e9, ke\u010f zaznel viac pravdepodobn\u00fd t\u00f3n.<br \/>\nM\u00f4j pr\u00ednos je v tom, \u017ee som vyu\u017eil tento v\u0161eobecn\u00fd postup, aby som mohol pomocou BioRadia sledova\u0165 latenciu P300. Nap\u00edsal som program v Jave, ktor\u00fd n\u00e1hodne hral t\u00f3ny s intervalom 1 s. Subjekt mal po\u010d\u00edta\u0165 zriedkavej\u0161ie t\u00f3ny (stimuly). Hran\u00fd zvuk a sign\u00e1l EEG (elektr\u00f3da Pz) sa zaznamen\u00e1vaj\u00fa pomocou BioRadia. Potom m\u00f4j \u010fal\u0161\u00ed program \u201erozstrih\u00e1\u201c EEG sign\u00e1l na jednosekundov\u00e9 \u00faseky, pri\u010dom za\u010dne tam, kde zaznie prv\u00fd t\u00f3n. Potom zo spriemerovan\u00fdch \u010dast\u00ed sprav\u00edm graf.<br \/>\nPozorovania som robil zatia\u013e na troch subjektoch. Na v\u0161etk\u00fdch troch bol vidite\u013en\u00fd sign\u00e1l P300 a merate\u013en\u00e1 latencia. Taktie\u017e som spravil pilotn\u00fd experiment, pri ktorom som sk\u00famal vplyv alkoholu na latenciu P300. Po vypit\u00ed 100 ml 50% alkoholu sa latencia zv\u00e4\u010d\u0161ila pribli\u017ene o 30 ms.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Autor\/autori: J\u00e1n Mederly Evokovan\u00fd potenci\u00e1l P300 je reakcia mozgu na stimul. Je zaznamen\u00e1van\u00e1 pomocou EEG. \u010cas medzi stimulom a sign\u00e1lom P300 (latencia P300) odzrkad\u013euje kognit\u00edvnu funk\u010dnos\u0165 mozgu, hlavne procesov zah\u0155\u0148aj\u00facich pozornos\u0165 a pam\u00e4\u0165. Napr\u00edklad viacer\u00e9 \u0161t\u00fadie u\u017e zistili, \u017ee latencia P300 sa pri Alzheimerovej chorobe zv\u00e4\u010d\u0161uje. Tak\u017ee P300 sa d\u00e1 pou\u017ei\u0165 ako neinvaz\u00edvna met\u00f3da na [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[6,10],"tags":[8,11],"class_list":["post-876","post","type-post","status-publish","format-standard","hentry","category-6","category-medicina-a-zdravotnictvo","tag-8","tag-medicina-a-zdravotnictvo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Met\u00f3da na meranie latencie evokovan\u00e9ho potenci\u00e1lu P300 pomocou BioRadia - Festival vedy a techniky AMAVET<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.festivalvedy.sk\/wp2\/metoda-na-meranie-latencie-evokovaneho-potencialu-p300-pomocou-bioradia\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Met\u00f3da na meranie latencie evokovan\u00e9ho potenci\u00e1lu P300 pomocou BioRadia - Festival vedy a techniky AMAVET\" \/>\n<meta property=\"og:description\" content=\"Autor\/autori: J\u00e1n Mederly Evokovan\u00fd potenci\u00e1l P300 je reakcia mozgu na stimul. 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