Aprili 23, 2015 | nguJosh Davis
Isizathu sokuziphatha ngokwesini naxa sisoloko sixoxwa ngokukhawuleza. Ngaba yindalo? Ukunyusa? Udibaniso lwababini? Abaphandi isuka e Universidad Veracruzana, EMexico, baphose umnqwazi wabo eringini. Bakwazile ukubonisa ukuba imeko ekhethiweyo yobufanasini kwiigundane zesilisa zinokubangelwa yi-oxytocin kunye nequinpirole yeziyobisi ngengqondo.
Iquinpirole yeziyobisi yaziwa ngokuba nefuthe elifanayo kwingqondo njenge-neurotransmitter dopamine, edlala indima enkulu ekuziphatheni okukhuthaza umvuzo. Inkqubo yokwabelana ngesondo iqinisa ukuthanda ngokwesondo phakathi kwamadoda nabasetyhini, njengoko ingqondo ikhupha amanqanaba amakhulu edopamine ngexesha lesenzo, inika i-rat ukubetha okumnandi kunye nemeko yokukhetha isilwanyana kwiqabane layo. Oku kuxhaswa phantse kwangoko emva kokuphuma, xa ingqondo yendoda ikhukula ngehomoni yioxytocin. Oku kucingelwa ukuba kuyasebenza ukubethelela ukuhlangana kwabo namaqabane ngokwandisa ukuthembela kwabo, umvuzo kunye nokukhuthaza imeko yoxolo.
Xa ama-rats ezidalwa ngokwesondo azibandakanya kwi-hormone oxytocin kunye / okanye i-quinpirole, kwaye yenziwa uhlala kunye nabanye abesilisa abesondo ngokwesini, bahlakulela intando yoluntu kwabanye abesilisa, nangona xa izidakamizwa zazingekho kwiinkqubo zazo. Okuthakazelisayo, ukukhetha kwabo kwakungagcini nje kuloo meko yentlalo. Xa kunikwa iintsuku ezikhethileyo emva kwenyanga phakathi kwendoda kunye nesigxina sokumelana ngokwesondo, iirati eziphathwayo zibonakalisa ukukhetha ngokwesondo kungekhona kwabesetyhini, kodwa kwakhona kubesilisa.
Uyazi njani ukuba i-rat isentlalo, okanye isondo, inomtsalane kwelinye iqela lezesondo ezifanayo? Ewe, abaphandi basebenzisa ezinye iingcamango zokuqinisekisa ubungqina babo, kuquka nexesha elingaphi na iirath eziphathwayo kunye nabanye abesilisa, ingaba banxibelelana kangakanani nomzimba, kwaye zihlandlo eziliphi na ezichukumisa izitho zabo zobulili. Ukongeza kule mizobo enobungane, abesilisa abaphathwayo baphinde babonise ezinye izibonakaliso ezinjenge-sexy, ezifana "nezenzo zokungabandakanyeli" kunye "nokuncenga njengabesifazane."
Ngelishwa, iimpembelelo zehomoni kunye neziyobisi zazingaphelelanga nje ekuphenduleni, kodwa zatshintsha ne-physiology yeengqondo zeempuku. Kudala kucingelwa ukuba ingingqi ye-hypothalamus kwingqondo, i-nucleus ye-dimorphic yesini yendawo ye-medial preoptic (SDN-POA), inxulumene nokukhetha ngokwesondo. Kuzo zonke iintlobo zezilwanyana ezanyisayo eziphandwayo ukuza kuthi ga ngoku, kubonisiwe ukuba zizinto ezithandanayo ngokwesini, kunye ne-SDN eyindoda amaxesha angama-5-7 amakhulu kunabafazi. Oku kucingelwa ukuba kunxulumene nesixa se testosterone esivelweyo ngeentsuku zokuqala zokubeleka. Ngexesha lokulinga, abaphandi bafumanisa ukuba ezo mpuku ziphathwe nge-oxytocin zibone ukuncipha kwe-SDN.
Konke, ke, akulula. Nangona i-SDN iyancipha ngokuxhamla kwi-oxytocin, kwenzeka ntoni nangona ukhetho lwabahlobo babo, kwaye ngoko ubungakanani be-SDN babengazange baxelele ukuthambekela kwesini esifanayo. Oku kunxamnye nezinye izifundo, enye yazo cetyiswa ukuba ubungakanani be-SDN bunxulumene nokukhethwa kwezesondo kwiimvu zamadoda kwaye ukuziphatha kobulili obufanayo kungahle kuhambelane nokwahlukana kobuchopho bomzimba.
Kodwa masingahambi ngaphambili kwethu. Ukutshixela amadoda amabini egumbini kwaye ubondle nge-oxytocin kunye nequinpirole ayizukujika ibe gay, kodwa isifundo sicebisa ukuba kunokwenzeka ukuba amagundane angamadoda athandanayo aphuhlise imeko yokuziphatha ngokwesini kunye neyesini, enikezwe iimeko ezifanelekileyo.
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