A kimiyance, barci wani canjin yanayin aikin kwakwalwa ne wanda ya sha bamban da zama a farke. Yayin barci, ƙwayoyin kwakwalwarmu suna aiki a hankali amma suna da ƙarfi sosai. Ana iya ganin wannan akan electroencephalogram: aikin bioelectrical yana raguwa a mita, amma yana ƙaruwa a cikin ƙarfin lantarki. Yi la'akari da matakai hudu na barci da halayensu. Numfashi da bugun zuciya na yau da kullun, tsokoki suna shakatawa, zafin jiki yana raguwa. Ba mu da masaniya game da abubuwan motsa jiki na waje, kuma hankali yana motsawa a hankali daga gaskiya. Karamar hayaniya ta isa ta katse wannan matakin bacci (ba tare da sanin cewa kana bacci kwata-kwata ba). Kusan kashi 10% na barcin dare yana wucewa a wannan matakin. Wasu mutane kan yi hargitsi a wannan lokacin barci (misali, yatsu ko gabobin jiki). Mataki na 1 yawanci yana daga mintuna 13-17. Wannan mataki yana da alamar shakatawa mai zurfi na tsokoki da barci. Hankalin jiki yana raguwa sosai, idanu ba sa motsawa. Ayyukan bioelectrical a cikin kwakwalwa yana faruwa a ƙananan mita idan aka kwatanta da farkawa. Mataki na biyu yana lissafin kusan rabin lokacin da aka kashe akan barci. Matakan farko da na biyu an san su da matakan barci mai sauƙi kuma tare suna ɗaukar kusan mintuna 20-30. Yayin barci, muna komawa mataki na biyu sau da yawa. Muna isa mafi zurfin lokaci na barci a kusan mintuna 30, mataki na 3, kuma a cikin mintuna 45, mataki na ƙarshe na 4. Jikinmu yana da annashuwa gaba ɗaya. An katse mu gaba daya daga abin da ke faruwa a kusa da gaskiyar. Ana buƙatar ƙara mai mahimmanci ko ma girgiza don tada daga waɗannan matakan. Tada mutumin da ke cikin mataki na 4 kusan ba zai yuwu ba - yana da kama da ƙoƙarin tada dabbar da ke tashe. Wadannan matakai guda biyu sune kashi 20% na barcinmu, amma rabonsu yana raguwa da shekaru. Kowane mataki na barci yana aiki da takamaiman manufa ga jiki. Babban aikin dukkanin matakai shine tasirin farfadowa akan matakai daban-daban a cikin jiki.
2022-11-11