Izimvo: Kukho ingcinga ebaluleke kakhulu kolu phononongo: I-testosterone inyusa i-libido ngokunyusa i-dopamine. 
I-Libido ihlala ihla dopamine. Uninzi lwabasebenzisi be-porn abanesondo okanye iingxaki ze-libido bacinga ukuba ezinye izinto zenzekile kumanqanaba abo e-testosterone. Hayi inene; batshintshe ubuchopho babo kunye ne-dopamine ukusebenza. Banokudakumba dopamine, hayi testosterone dysregulation. Ukuba kukho ukungasebenzi kakuhle kwe-dopamine, njengoko kuhlala kunjalo ngokusetyenziswa okunzima kwe-porn, ke zonke i-testosterone emhlabeni azizukunceda ngee-ections kunye nee-libidos.
UPutnam SK, uDu J, uSato S, uHull EM. IHome Behav. I-2001 Meyi; 39 (3): 216-24. ISebe lezeengqondo, iYunivesithi yaseNew York e-Buffalo, Buffalo, eNew York 14260, e-USA.
Indawo ye-medial preoptic (MPOA) yindawo ebalulekileyo yokudibanisa yokuziphatha kwabantu abesilisa. Sixele ukwanda kokukhutshwa kwe-dopamine (DA) kwi-MPOA yamagundwane angamadoda kwakamsinya ngaphambi nangexesha lokuprinta. Ukuphulukana nomva kokulahleka kobuchule bokuprinta kubonakalise ukulahleka kwempendulo ye-DA yangaphambili kumfazi ongowesibini.
Isifundo esikhoyo saphanda iikhosi zexesha lokubuyiselwa, endaweni yokulahleka, impendulo ye-MPOA DA kumfazi ovumayo kunye nokuthotyelwa kwiindawo ezihlala ixesha elide. Iigundane zesidoda zaphoswa kwaye zavavanywa ukulahleka kobuchule bokushicilela kwiintsuku ze-21 kamva Emva koko bafumana i-2, 5, okanye i-10 sindano yemihla ngemihla ye-testosterone propionate (TP, 500 microg) okanye ioyile. Iisampulu ze-Microdialysate zaqokelelwa kwi-MPOA ngexesha lokwandlalela, ukubhencwa kwabasetyhini emva kwesithintelo, kunye nokukhuphela. I-extracellular DA yalinganiswa kusetyenziswa iHPLC-EC. Akukho nasinye kwezilwanyana ezintandathu eziphathwayo ze-2-TP ezanyanzeliswa, kwaye azibonisanga ukukhutshwa okuphezulu kwe-DA kwi-MPOA apho kukho umfazi owamkelayo. Zintlanu kwezi zilithoba ze-5-day-TP-liphoofolo-eziphilisiweyo; ezintathu ngaphandle kokuchaphazela; kwaye enye yasilela ukulingisa, ngayo yonke kodwa isilwanyana esingayichasanga sibonisa ukukhutshwa okuphezulu kwe-DA.
Zonke izilwanyana ezintandathu ze-10-day-TP-capised capised kwaye zabonisa ukwanda kwe-MPOA DA. Akukho nalunye kulawulo lweoyile okukhutshelweyo okanye ukubonakalisa ukunyuka kokukhutshwa kwe-DA. Ke ngoko, ubudlelwane obungaguquguquki phakathi kokukhutshwa kwe-MPOA DA ngexesha lokuchatshazelwa ngumntu obhinqileyo wokwamkela kunye nobuchule obulandelayo bendoda.
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