Siyayazi i-pitch ephelele kepha siyakhohlwa ukuthi inkumbulo, noma ngabe iyivelakancane ngokweqile, nayo ingaba ngokuphelele.

Abanye abantu banekhono lokugcina enkumbulweni yabo inqwaba yezithombe, imisindo, izinto ngemininingwane yazo emincane kakhulu. Kunganikeza umuntu amandla okusigcina isikhashana, imemori ecishe iphelele yesithombe esethulwe cishe imizuzwana engama-30 sengathi isithombe sisabonakala.

Njenganoma iyiphi enye imemori, ukuqina kwememori kuncike ezintweni eziningana ezinjenge:

• isikhathi nobuningi bokuchayeka ku-stimulus;
• ukuqaphela okuqaphelayo;
• ukubaluleka komuntu;
• njll

Sikhuluma ngememori ephelele, inkumbulo yezithombe noma imemori ye-eidetic, kusukela esiGrekini esithi “eido”, okusho ukuthi “ukubona”, ifomu le-eidos. Izithombe ze-eidetic zikude ngokuphelele, njengoba zithambekele ekuhlanekezelweni nasezengezweni, njengememori ye-episodic. Ku-Alan Searleman, uprofesa wezengqondo (iSt Lawrence University, eNew-Yort St), akuyona into engavamile kubantu abanezinkumbulo ze-eidetic ukushintsha noma ukusungula imininingwane ebonakalayo. Lokhu kusikisela ukuthi izithombe ze-eidetic ngokuqinisekile azizona izithombe ngokwemvelo, kepha kunalokho zakhiwa kabusha kusuka enkumbulweni futhi zingathonywa njengezinye izinkumbulo (zombili ezibukwayo nezingabonakali) ngokuchema kwengqondo.

Ubukhona bememori ye-eidetic bunempikiswano. Uma ikhona, ingabe le nkumbulo izalwa nayo noma iyatholakala. U-Adrian de Groot (1914-2006), uprofesa wesayensi yezengqondo waseDashi nomdlali we-chess omkhulu, wayiqamba le nkolelo-mbumbulu ngokwenza ucwaningo ngekhono lompetha be-chess abakhulu ukukhumbula izikhundla eziyizicucu zezicucu kusethi. Oompetha bakwazile ukukhumbula imininingwane emangazayo kakhulu ukwedlula esimweni sezimfundamakhwela. Lokhu okuhlangenwe nakho kufinyelela ekusekelweni kwememori ye-eidetic. Kepha ngemuva kokubonisa izingqwele ezingaba yingxenye yezakhiwo emidlalweni yangempela, ukunemba kwezinkumbulo zabo bekufana nokwabafundisayo. Lokhu kusho ukuthi ompetha bebethuthukise ikhono lokubamba ngekhanda ukubikezela izingoma zomdlalo onengqondo kunokuba babe ngabanekhono eliphelele le-eidetic.

Kwaphela iminyaka eyishumi, umcwaningi uRalph Norman Haber efunda inkumbulo yezingane ezineminyaka engu-7 kuya kwengu-11. Inkumbulo ye-Eidetic ikhona kumaphesenti amancane ezingane. Ngokumangazayo, izingane ezinezinkumbulo ze-eidetic zikhulume ngesithombe sesikhathi samanje, sengathi sihlale siphambi kwazo, sifakwe ezingqondweni zazo. Ngokusho kukaProfesa Andy Hudmon (uMnyango Wezobuchwephesha Bemvelo, iStanford), leli khono lokukhumbula kakhulu izingane kunabantu abadala lisikisela ukuthi ushintsho lwentuthuko lwenzeka ngesikhathi esithile, mhlawumbe ngesikhathi sokutholwa kwamakhono athile, okungaphazamisa amandla yememori ye-eidetic.

Iningi lososayensi bathi ukusebenza kwenkumbulo okungavamile kunekhono elikhulile lokuhlanganisa noma lokuhlela imininingwane ezofakwa ngekhanda, kunokuba kube kwimemori eidetic yangempela.

Isibonelo, abadlali abaningi be-chess abanekhono elimangalisayo lokukhumbula isikhundla sezingcezu ze-chess nganoma yisiphi isikhathi phakathi nomdlalo. Ikhono lokugcina isithombe esinengqondo somqondo we-chessboard livumela laba badlali ukuthi badlale amabhodi we-chess amaningi ngasikhathi sinye, noma ngabe kuvalwe amehlo. Ngakho-ke akumangazi ukuthi abacwaningi babone ukuthi abadlali be-chess abangochwepheshe banekhono elikhulu kakhulu lokukhumbula amaphethini we-chess kunezihloko zokuhlola ezingadlali i-chess. Kodwa-ke, ngenkathi abacwaningi bephonsela inselelo abadlali be-chess abanobuhle ngamamodeli ebhodi akhiqizwe kakhulu, abadlali abangochwepheshe babengengcono kunabadlali be-chess chevice ekukhumbuleni amamodeli we-chess. Ngakho-ke, ngokushintsha imithetho yomdlalo, abacwaningi baveze ukuthi ikhono elimangazayo lalaba badlali lokukhumbula imininingwane ebonakalayo ethize ye-chess (mhlawumbe sona kanye isizathu esenza ukuthi laba bantu babe nekhono kwi-chess) bekungalingani nememori yezithombe. Abantu abanememori eyiqiniso ye-eidetic kufanele ngencazelo bakwazi ukwazana futhi bakhumbule ngemininingwane ephelele ngisho nezigcawu ezibonakalayo ezingahleliwe.

Yize kuyimpikiswano impela, abanye abacwaningi bakholelwa futhi ukuthi i-eidetic imaging yenzeka kaningi ezindaweni ezithile zabantu abaphazamisekile engqondweni (ikakhulukazi, kubantu ababambezeleka kakhulu kungenzeka ngenxa yezizathu zebhayoloji kunezimbangela zemvelo) kanye naphakathi kwabantu abasemakhaya.

UKim Peek, waseMelika one-Asperger's Syndrome (isifo se-neurodevelopmental semvelaphi yezakhi zofuzo), owakhuthaza umlingiswa kaRaymond Babbitt, iqhawe lendoda ye-movie ethi Rain futhi edlalwa nguDustin Hauffman, wayenememori ye-eidetic futhi wayebambe ngekhanda izincwadi ezingaphezu kwezingu-10. Kuthathe imizuzwana eyishumi ukufunda ikhasi. I-encyclopedia yangempela yokuphila, amandla akhe okubamba ngekhanda inani lemininingwane elihlanganisiwe futhi kumvumele ukuthi aphenduke abe yiGPS yomuntu yangempela, kungakhathalekile ukuthi umuzi ukwiplanethi akuyo.

Omunye umpetha wokukhumbula, uStephe Wiltshire, obizwa nge "ndoda yekhamera". I-Autistic ngememori ye-eidetic, uyaziwa ngekhono lakhe lokudweba indawo enemininingwane eminingi ngemuva kokuyibona ngokuphazima kweso. Qaphela, inkumbulo ye-eidetic uhlobo olukhethekile lwememori. Akufanele ididaniswe ne-hypermnesia noma ukuphakanyiswa kwememori. Lesi sakamuva yi-psychopathology ebonakala ngememori enemininingwane eminingi ngokuphila komuntu kanye nesikhathi esiningi ngokweqile esinikelwe ekukhumbuleni okwedlule.