Umthombo
I-Leiden Institute for Brain and Cognition-LIBC, University of Leiden, Leiden, eNetherlands. [i-imeyili ivikelwe]
abstract
Imithi ye-Dopaminergic ithonya ukucubungula okuqaphileyo okuvuselela izinto ezikhuthazayo, futhi ihlotshaniswa nokuziphatha okucindezelayo-okucindezelayo, njengokuthi ubulili obufanayo.
Ucwaningo lwangaphambili lubonise ukuthi isethulo esingaqondakali se-subliminal ubulili inkuthazo ivuselela izindawo zobuchopho ezaziwa ukuthi ziyingxenye yohlelo 'lomvuzo'. Kulolu cwaningo, kwakucatshangelwa lokho i-dopamine inqamulela ukusebenza kuzindawo eziyinhloko zesistimu yokuvuza, njenge-nucleus accumbens, ngenkathi kusetshenzwa ngokucophelela ubulili khuthazai.
Abesilisa abasha abanempilo (n = 53) babekwa ngezikhathi ezithile emaqenjini amabili okuhlola noma iqembu lokulawula, futhi banikwa i-dopamine umphikisi (haloperidol), a i-dopamine i-agonist (levodopa), noma i-placebo. Ukusebenza kobuchopho kuhlolwe ngesikhathi somsebenzi we-back-masking onayo ihanjiswe ngokweqile ubulili isisusa.
Imiphumela yabonisa ukuthi i-levodopa yakhulisa kakhulu ukuvuselelwa ku-nucleus accumbens futhi ihlehlisa i-anterior i-cingulate uma i-subliminal ubulili kuboniswa izinyathelo ezimbi, kanti i-haloperidol yehlelwe ukusebenza kulezo zindawo. I-Dopamine ngaleyo ndlela kuthuthukisa ukwenziwa kokusebenza ezifundeni okucatshangwa ukuthi zilawula 'ukufuna' ukuphendula okungahle kube nomvuzo ubulili izinyathelo ezingaqondakali kahle. Lesi siqalo esiqalayo sohlelo lokuvuza singase sichaze ukudonsa imivuzo kubantu abanezinkinga zokufuna ukuzikhokhela ezifana nokucwasana ngokobulili kanye neziguli ezithola imithi ye-dopaminergic.
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