imvelaphi
KwiYunivesithi yaseLethbridge, eLethbridge, AB, eCanada.
Abstract
Ingxaki yokungcakaza (PG) iya ijongwa ngakumbi njengomlutha ohambelana nokusetyenziswa gwenxa kweziyobisi, endaweni yokuphazamiseka kokulawulwa kwempembelelo, nangona kunjalo indlela yokukhobokisa ihlala ingacacanga. Uphando lwe-Neuroimaging luxhase "ukunqongophala komvuzo" kwi-PG ngokucebisa impendulo engacacanga kungcakazo, ngakumbi kwi-striatum. Apha sichaza ubungqina be-electrophysiological bempendulo ye-hypersensitive kwingxelo yokungcakaza kwingxaki yokungcakaza. Uphando lwangaphambili kubathathi-nxaxheba abasempilweni lubonise ukuba ingxelo ngexesha lemisebenzi yongcakazo ibangela iimpendulo ze-neural stereotypical kuquka ne-Feedback-Related Mediofrontal Negativity (FRN), i-P300 enxulumene nengxelo, kunye nokwanda kwe-theta-band ye-induced (4-8 Hz) amandla. Siye savavanya ithiyori yokuba inkqubo yengxelo engaqhelekanga ibonakalisa umsebenzi wobuchopho kwingxaki yokungcakaza ngelixa ungcakaza. EEG yabhalwa ukusuka non-abangcakazi kunye self-ezichongiweyo abangcakazi njengoko besenza kuguqulelo lwekhompyutha Iowa Gambling Task. Ingxelo malunga ne-valence (i-win vs. ilahleko) ibangele i-FRN kuwo omabini amaqela, kodwa kubadlali bokungcakaza oku kwandulelwa ngumahluko wangaphambi kwexesha we-hypersensitive fronto-central kwimpendulo. Le FRN yangaphambili yayinxulunyaniswa nobungqongqo bokungcakaza kwaye yafakwa kwindawo ye-medial frontal cortex kusetyenziswa umfanekiso osasaziweyo wemithombo (CLARA). Abangcakazi nabo bahluke kwiimpendulo kumngcipheko, ebonisa icandelo le-P300 elimnyama kunye namandla angaphantsi kwe-EEG kwiqela le-theta. Apha sicebisa ukuba ukutolikwa okungaphezulu kokunqongophala komvuzo kubizelwe malunga ne-PG. Kwimiba ethile yokusebenza kwengqondo, abangcakazi banokubonisa i-hypersensitivity ukuze bavuze ingxelo efana nokuvuselela iziyobisi kunokusilela komvuzo. Iziphumo zethu zikwacebisa ukuba ubuchopho obuqhelekileyo be-neurologically busebenzisa iinkqubo ezingadibaniyo ekusetyenzweni kwengxelo evela kwimisebenzi ebandakanya ukwenza izigqibo ezinobungozi.
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