Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions

Ikääntymiseen liittyy aivojen rakenteellisia ja kognitioiden muutoksia. Ikääntymismuutoksia tuntojärjestelmässä tutkittiin 41 nuorelta ja 44 ikääntyneeltä aikuiselta. Aivojen tuntoherätevasteet tuotettiin sti¬muloimalla sormia sähköisillä pulsseilla passiivisessa koetilanteessa, jossa esitettiin toi...

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Päätekijä: Waselius, Tomi
Muut tekijät: Yhteiskuntatieteellinen tiedekunta, Faculty of Social Sciences, Psykologian laitos, Department of Psychology, University of Jyväskylä, Jyväskylän yliopisto
Aineistotyyppi: Pro gradu
Kieli:eng
Julkaistu: 2014
Aiheet:
Linkit: https://jyx.jyu.fi/handle/123456789/44487
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author Waselius, Tomi
author2 Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto
author_facet Waselius, Tomi Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto Waselius, Tomi Yhteiskuntatieteellinen tiedekunta Faculty of Social Sciences Psykologian laitos Department of Psychology University of Jyväskylä Jyväskylän yliopisto
author_sort Waselius, Tomi
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description Ikääntymiseen liittyy aivojen rakenteellisia ja kognitioiden muutoksia. Ikääntymismuutoksia tuntojärjestelmässä tutkittiin 41 nuorelta ja 44 ikääntyneeltä aikuiselta. Aivojen tuntoherätevasteet tuotettiin sti¬muloimalla sormia sähköisillä pulsseilla passiivisessa koetilanteessa, jossa esitettiin toistuvasti ärsykkeitä eri sormiin. Toistuvien ja poikkeavien ärsykkeiden aiheuttamat vasteet erosivat komponenteissa P50 (40-70 ms), N80 (60-100 ms) ja poikkeavuusnegatiivisuus (sMMN, 140-210 ms). Ikääntyneiden P50 vasteet olivat suurempia kuin nuorilla, mutta muita ryhmäeroja ei löytynyt. Varhaisen muutoksen havaitsemisen heikentyminen saattaa liittyä vaikeuteen erotella oleellisia aistiärsykkeitä ympäristöstä. Jatkossa tulisi tutkia ja verrata poikkeavuusnegativiisudeen ikääntymismuutoksia eri aistiärsykkeillä, kuten ääni- ja tuntoärsykkeillä. Herkät ikääntymismuutosten mittarit ovat hyödyllisiä esimerkiksi kliinisessä käytössä.
first_indexed 2023-03-22T09:58:11Z
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Ik\u00e4\u00e4ntymismuutoksia tuntoj\u00e4rjestelm\u00e4ss\u00e4 tutkittiin 41 nuorelta ja 44 ik\u00e4\u00e4ntyneelt\u00e4 aikuiselta. Aivojen tuntoher\u00e4tevasteet tuotettiin sti\u00acmuloimalla sormia s\u00e4hk\u00f6isill\u00e4 pulsseilla passiivisessa koetilanteessa, jossa esitettiin toistuvasti \u00e4rsykkeit\u00e4 eri sormiin. Toistuvien ja poikkeavien \u00e4rsykkeiden aiheuttamat vasteet erosivat komponenteissa P50 (40-70 ms), N80 (60-100 ms) ja poikkeavuusnegatiivisuus (sMMN, 140-210 ms). Ik\u00e4\u00e4ntyneiden P50 vasteet olivat suurempia kuin nuorilla, mutta muita ryhm\u00e4eroja ei l\u00f6ytynyt. Varhaisen muutoksen havaitsemisen heikentyminen saattaa liitty\u00e4 vaikeuteen erotella oleellisia aisti\u00e4rsykkeit\u00e4 ymp\u00e4rist\u00f6st\u00e4. Jatkossa tulisi tutkia ja verrata poikkeavuusnegativiisudeen ik\u00e4\u00e4ntymismuutoksia eri aisti\u00e4rsykkeill\u00e4, kuten \u00e4\u00e4ni- ja tunto\u00e4rsykkeill\u00e4. 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spellingShingle Waselius, Tomi Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions somatosensorinen herätepotentiaali somatosensorin poikkeavuusnegatiivisuus Psykologia Psychology 202 ikääntyminen EEG
title Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions
title_full Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions
title_fullStr Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions
title_full_unstemmed Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions
title_short Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions
title_sort somatosensory evoked potentials as indicators of aging related changes in sensory cognitive functions
title_txtP Somatosensory evoked potentials as indicators of aging-related changes in sensory-cognitive functions
topic somatosensorinen herätepotentiaali somatosensorin poikkeavuusnegatiivisuus Psykologia Psychology 202 ikääntyminen EEG
topic_facet 202 EEG Psychology Psykologia ikääntyminen somatosensorin poikkeavuusnegatiivisuus somatosensorinen herätepotentiaali
url https://jyx.jyu.fi/handle/123456789/44487 http://www.urn.fi/URN:NBN:fi:jyu-201410273095
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