Imizuzu engamashumi amathathu ivikela ingqondo yakho impilo yonke

Ucwaningo lwenziwa abacwaningi base-American University of Maryland, futhi imiphumela yabo yanyatheliswa kumagazini wakamuva we-Scientific Journal of the International Neuropsychological Society.

Ukufika kokutholwe ocwaningweni, abacwaningi balinganise umsebenzi wobuchopho besebenzisa i-fMRI yabahlanganyeli abaphile kahle abaneminyaka engama-55 kuye kwengama-85.

Ithimba liphinde lacela ababambiqhaza ukuthi benze imisebenzi yenkumbulo ehlanganisa ukuhlonza amagama adumile nangathandeki.

Ngokusho kocwaningo, inqubo yokukhumbula amagama adumile yenza kusebenze inethiwekhi ye-neural ehlobene nenkumbulo ye-semantic, eyaziwa ngokuwohloka ngokuhamba kwesikhathi ngenxa yokuncipha kwenkumbulo kubantu asebekhulile.

Lezi zivivinyo zenziwa imizuzu engu-30 ngemva kokuzivocavoca okukhulu ebhayisikilini lokuzivocavoca, base beqhuba izivivinyo ezifanayo kodwa ngosuku lokuphumula lapho ababambiqhaza bengazivocavoci.

Abacwaningi bathola ukuthi ukuvivinya umzimba kwenza ubuchopho busebenze ezindaweni ezi-4 zekhohlo ezinomthwalo wemfanelo wenkumbulo, okwakugqame kakhulu kuzo kwakuyi-“hippocampus” - esebenza ukuhlanganisa nokuthola ulwazi lapho kudingeka - uma kuqhathaniswa nokuphumula.

Abacwaningi baveze ukuthi i-hippocampus incipha ngenxa yobudala futhi isifunda sobuchopho sichayeka kumaprotheni ayingozi aholela esifweni i-Alzheimer's.

"Ucwaningo lwangaphambilini lubonise ukuthi ukuvivinya umzimba njalo kungakhuphula umthamo we-hippocampus, kodwa ucwaningo lwethu lunikeza ulwazi olusha lokuthi ukuvivinya umzimba okujulile kunamandla okuthinta le ndawo ebalulekile yobuchopho," kusho umcwaningi oholayo uCarson Smith.

"Njengoba nje imisipha ijwayela ukuvivinya umzimba okuphindaphindiwe, izikhathi zokuzivocavoca okukodwa zingathuthukisa amanethiwekhi we-neurocognitive ngezindlela ezithuthukisa ukuzivumelanisa kwazo nokuguga, ukwandisa ubuqotho benethiwekhi nokusebenza, futhi zivumele ukufinyelela okuphumelelayo kwezinkumbulo."

Isifo i-Alzheimer's siwuhlobo oluvame kakhulu lokuwohloka komqondo, futhi siholela ekuwohlokeni okuqhubekayo emandleni okucabanga nokusebenza kobuchopho, nokulahlekelwa inkumbulo. Lesi sifo sithuthuka kancane kancane ekulahlekelweni ikhono lokwenza imisebenzi yansuku zonke, nokuxhumana nemvelo, futhi isimo singase siwohloke kuze kube sezingeni lokuntuleka kokusebenza kokusebenza.