Kuna son samun ƙwaƙwalwar ajiya mai kyau? Barci da kyau! Bayan haka, lokacin barcin REM (REM-phase, lokacin da mafarkai suka bayyana kuma saurin motsi ido ya fara) yana da hannu kai tsaye a cikin samuwar ƙwaƙwalwar ajiya. Masana kimiyya sun ba da shawarar hakan fiye da sau ɗaya, amma kwanan nan an sami damar tabbatar da cewa ayyukan neurons da ke da alhakin canja wurin bayanai daga ɗan gajeren lokaci zuwa ƙwaƙwalwar ajiya na dogon lokaci yana da mahimmanci daidai a lokacin barcin REM. Masana kimiyya a jami'ar Bern da kuma Douglas Institute of Mental Health a Jami'ar McGill sun yi wannan binciken, wanda ya kara nuna muhimmancin barci mai kyau. An buga sakamakon binciken su a cikin mujallar Science, portal Neurotechnology.rf ya rubuta dalla-dalla game da shi.
Duk wani sabon bayanin da aka samu ana fara adana shi a cikin nau'ikan ƙwaƙwalwar ajiya daban-daban, misali, sarari ko motsin rai, sannan kawai a haɗa shi ko haɗa shi, yana motsawa daga ɗan gajeren lokaci zuwa dogon lokaci. “Yadda kwakwalwa ke aiwatar da wannan tsari ya kasance ba a sani ba har yanzu. A karon farko, mun sami damar tabbatar da cewa barcin REM yana da matuƙar mahimmanci ga tsarin al'ada na ƙwaƙwalwar sararin samaniya a cikin mice, "in ji ɗaya daga cikin marubutan binciken, Sylvain Williams.
Don yin wannan, masana kimiyya sun gudanar da gwaje-gwaje a kan mice: rodents a cikin ƙungiyar kulawa sun bar barci kamar yadda aka saba, kuma mice a cikin rukunin gwaji a lokacin lokacin barci na REM "sun kashe" ƙananan ƙwayoyin da ke da alhakin ƙwaƙwalwar ajiya, suna aiki da su tare da haske. Bayan irin wannan bayyanar, waɗannan berayen ba su gane abubuwan da suka yi nazari a baya ba, kamar an goge musu ƙwaƙwalwar ajiya.
Kuma ga wata hujja mai mahimmanci, wadda jagorar marubucin binciken, Richard Boyes ya lura: “Kashe waɗannan ƙwayoyin cuta guda ɗaya, amma a waje da lokutan barci na REM, ba su da tasiri ga ƙwaƙwalwa. Wannan yana nufin cewa aikin neuronal yayin barcin REM yana da mahimmanci don ƙarfafa ƙwaƙwalwar ajiya ta al'ada. ”
Ana ɗaukar barcin REM muhimmin sashi na sake zagayowar barci a cikin duk dabbobi masu shayarwa, gami da mutane. Masana kimiyya suna ƙara danganta rashin ingancinsa da bayyanar cututtuka daban-daban na kwakwalwa irin su Alzheimer ko Parkinson. Musamman, barcin REM sau da yawa yakan lalace sosai a cikin cutar Alzheimer, kuma sakamakon wannan binciken ya nuna cewa irin wannan nakasa na iya shafar ƙwaƙwalwar ajiya kai tsaye a cikin ilimin cututtuka na "Alzheimer", masu bincike sun ce.
Domin jiki ya ciyar da lokacin da yake buƙata a cikin lokaci na REM, yi ƙoƙarin yin barci akai-akai na akalla sa'o'i 8: idan barci ya katse akai-akai, kwakwalwa yana kashe lokaci kaɗan a wannan lokaci.
Kuna iya karanta ɗan ƙarin game da wannan gwaji mai ban sha'awa na masana kimiyya a ƙasa.
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Daruruwan binciken da aka yi a baya sun yi ƙoƙari ba su yi nasara ba don ware ayyukan jijiyoyi yayin barci ta amfani da dabarun gwaji na gargajiya. A wannan karon, masana kimiyya sun ɗauki wata hanya dabam. Sun yi amfani da hanyar da aka haɓaka kwanan nan kuma sanannen hanyar hoton hoto na optogenetic tsakanin masu ilimin likitanci, wanda ya ba su damar tantance yawan adadin ƙwayoyin cuta daidai da daidaita ayyukan su a ƙarƙashin tasirin haske.
"Mun zaɓi waɗancan jijiyoyi waɗanda ke sarrafa ayyukan hippocampus, tsarin da ke haifar da ƙwaƙwalwa yayin farkawa, da tsarin GPS na kwakwalwa," in ji Williams.
Don gwada ƙwaƙwalwar ajiyar sararin samaniya na dogon lokaci a cikin beraye, masana kimiyya sun horar da rodents don lura da wani sabon abu a cikin yanayi mai sarrafawa, inda akwai wani abu da suka yi nazari a baya kuma ya kasance daidai da sabon abu a siffar da girma. Berayen sun ɓata lokaci mai yawa don bincika "sabon", don haka sun nuna yadda koyonsu da tunawa da abin da aka koya a baya ke gudana.
Lokacin da waɗannan berayen ke cikin barcin REM, masu binciken sun yi amfani da ƙwanƙwasa haske don kashe ƙwayoyin jijiya masu alaƙa da ƙwaƙwalwa da tantance yadda hakan zai shafi ƙarfafa ƙwaƙwalwar ajiya. Kashegari, waɗannan rodents gaba ɗaya sun gaza aikin yin amfani da ƙwaƙwalwar sararin samaniya, ba tare da nuna ko ɗan ƙaramin juzu'i na ƙwarewar da suka samu a ranar da ta gabata ba. Idan aka kwatanta da ƙungiyar kulawa, ƙwaƙwalwar su kamar an goge su.