Imizuzu engamashumi amathathu ikhusela ingqondo yakho ubomi bakho bonke

Uphononongo lwenziwe ngabaphandi kwiYunivesithi yaseMelika yaseMaryland, kwaye iziphumo zabo zapapashwa kwinqaku lamva nje leScientific Journal ye-International Neuropsychological Society.

Ukufika kwiziphumo zophononongo, abaphandi balinganise umsebenzi wengqondo besebenzisa i-fMRI yabathathi-nxaxheba abasempilweni abaneminyaka engama-55 ukuya kwengama-85.

Iqela liphinde lacela abathathi-nxaxheba ukuba benze imisebenzi yememori equka ukuchonga amagama adumileyo nangathandwayo.

Ngokophononongo, inkqubo yokukhumbula amagama adumileyo ivula inethiwekhi ye-neural ehambelana nenkumbulo ye-semantic, eyaziwa ngokuba yimbi ngokuhamba kwexesha ngenxa yokuncipha kwememori kubantu abadala.

Olu vavanyo lwenziwa kwimizuzu engama-30 emva kweseshoni yokuzivocavoca ngamandla kwibhayisekile yokuzilolonga, kwaye emva koko baqhuba iimvavanyo ezifanayo kodwa ngosuku lokuphumla xa abathathi-nxaxheba bebengazilolongi.

Abaphandi bafumanise ukuba ukuzivocavoca kusebenze ubuchopho kwiindawo ezi-4 ze-cortical ezinoxanduva lokukhumbula, eyona nto ibalaseleyo yayiyi "hippocampus" - esebenza ukudibanisa nokubuyisela ulwazi xa lufuneka - xa kuthelekiswa nokuphumla.

Abaphandi babonise ukuba i-hippocampus iyancipha ngenxa yobudala kwaye ummandla wengqondo ubonakaliswe kwiiprotheni ezinobungozi ezikhokelela kwisifo se-Alzheimer.

"Izifundo zangaphambili zibonise ukuba ukuzivocavoca rhoqo kunokunyusa umthamo we-hippocampus, kodwa isifundo sethu sibonelela ngolwazi olutsha lokuba umthambo onamandla unokuchaphazela le ndawo ibalulekileyo yengqondo," watsho umphandi okhokelayo uCarson Smith.

"Njengokuba izihlunu zilungelelanisa ukuzivocavoca ngokuphindaphindiweyo, iiseshini zokuzilolonga zodwa zinokuphucula uthungelwano lwe-neurocognitive ngeendlela eziphucula ukulungelelaniswa nokuguga, ukwandisa ingqibelelo yenethiwekhi kunye nomsebenzi, kunye nokuvumela ukufikelela okusebenzayo kwiinkumbulo."

Isifo i-Alzheimer's lolona hlobo luxhaphakileyo lwe-dementia, kwaye lukhokelela kukonakala okuzingileyo kwizakhono zokucinga kunye nokusebenza kwengqondo, kunye nokulahleka kwenkumbulo. Esi sifo siqhubela phambili ngokuthe ngcembe ekulahlekeni kokukwazi ukwenza imisebenzi yemihla ngemihla, kunye nokunxibelelana nokusingqongileyo, kwaye imeko inokuwohloka kwinqanaba lokungabikho kokusebenza okusebenzayo.