Ukulahleka kwememori yesikhashana (i-amnesia), njengememori ngokwalo, kuyinto engakaze ifundwe ngokugcwele futhi iphethe izimfihlakalo eziningi. Kungenzeka nakanjani kunoma yimuphi umuntu, kungakhathaliseki ukuthi ubudala nobani bokuphila. Yini eyaziwa ngalokhu kwephulwa namuhla kuxoxwa ngakho kulesi sihloko.
Ukubonakaliswa kwesifo sokulahlekelwa kwememori yesikhathi esifushane
Ukulahleka kwememori okwesikhashana kuvele kungazelelwe futhi kungadlulela emaminithini ambalwa kuya ezinsukwini ezimbalwa, kungashadile noma kuphinde izikhathi eziningana ngonyaka. Ngesikhathi esifanayo umuntu akakwazi ukukhumbula izenzakalo zanoma yikuphi okusemthethweni futhi ulahlekelwa ikhono lokurekhoda ememori izenzakalo ezenzeka okwamanje. Noma kunjalo, ukufinyelela ememori ejulile kugcinwa - umuntu ukhumbula igama lakhe, ubuntu kanye namagama wezihlobo, angakwazi ukuxazulula izinkinga zezibalo. Esikhathini sokuhlaselwa okunjalo umuntu uyaqaphela ukuphazamiseka kwememori, uzizwa edidekile ngesikhathi nesikhala, akashiyi imizwa yokukhathazeka, ukungabi nasizo, ukudideka.
Imibuzo ejwayelekile yomuntu onokulahlekelwa kwememori yesikhashana yilezi: "Ngingaphi?", "Ngiphethe kanjani lapha?", "Ngenzani lapha?", Njll. Noma kunjalo, ngenxa yokulahlekelwa ikhono lokubamba nokurekhoda ulwazi olusha, angabuza imibuzo efanayo.
Izimbangela zokulahlekelwa kwenkumbulo yesikhashana
Ukubonakala kwalesi simo kubangelwa ukuphulwa kwemisebenzi yinye yezinhlaka zobuchopho (i-hippocampus, i-thalamus, njll), kodwa lo mqondo ngokwawo uhlala ungacacile. Izimbangela ezikhona kungenzeka zibe yizici ezilandelayo, ezingabonwa kokubili eziyinkimbinkimbi futhi ezihlukene:
- ukucindezeleka okukhulu;
- ukuhlukunyezwa kwekhanda;
- ukunqanda ngokomzimba;
- izinguquko ngokuzumayo endaweni yokushisa embi (ukucwiliswa emanzini abandayo, njll);
- ukwamukela utshwala, ezinye izidakamizwa zezinto ezidakayo;
- izifo ezibangelwa ukulimala komqondo - isifo se-Alzheimer , isisu sobuchopho, i-meningitis,
Isifo sikaParkinson, isifo sokufa , isifo sohlangothi, njll.
Ukwelashwa kokulahlekelwa kwememori yesikhathi esifushane
Ngokuvamile, ukulahlekelwa inkumbulo yesikhashana kuqhubeka ngokuzenzekelayo. Kwezinye izimo, izivivinyo ezikhethekile zokuthuthukiswa komsebenzi wobuchopho, imishanguzo, izithako zemithi ezidingekayo zizodingeka. Okubaluleke kakhulu indlela yokuphila enempilo, ukudla okunempilo, ukulala okuvamile. Uma i-amnesia yesikhathi esifushane ibangelwa yisifo, okokuqala kuyobaluleka ukubhekana nokuphathwa kwayo.