Capture 3D

Espacio abierto virtual

Atención  24/7

capture 3d png
Dónde estamos?

La Serena 

Región de Coquimbo.

Dónde atendemos?

Todo Chile

Nuestro contacto?

51 278 4 697 / +56 9 81884360

3.1. Male Sexual Response in the Brain 3. Discussion While male sexual response is complex, several key brain regions are critical for achieving and maintaining erections . Hypothalamic nuclei play an important role in regulating sexual behavior and erections by acting as an integration center for brain and peripheral input . The hypothalamic nuclei that facilitate erections receive pro-erectile input from the mesolimbic dopamine pathway, which comprises the ventral tegmental area (VTA) and the nucleus accumbens (NAc) . The VTA-NAc circuit is a key detector of rewarding stimuli, and forms the core of a broader, more complex set of integrated circuits commonly called the “reward system” . An individual's response to natural rewards, such as Hookup znaczenie sex, is largely regulated by the mesolimbic dopamine pathway, which receives excitatory and inhibitory input from other limbic structures and the prefrontal cortex . Erections are dependent upon activation of dopaminergic neurons in VTA and dopamine receptors in the NAc [65,66]. Excitatory glutamate inputs from other limbic structures (amygdala, hippocampus) and the prefrontal cortex facilitate dopaminergic activity in the VTA and NAc . Reward responsive dopamine neurons also project into the dorsal striatum, a region activated during sexual arousal and penile tumescence . Dopamine agonists, such as apomorphine, have been shown to induce erection in men with both normal and impaired erectile function . Thus, dopamine signaling in the reward system and hypothalamus plays a central role in sexual arousal, sexual motivation and penile erections [65,66,69]. We propose that chronic Internet pornography use resulted in erectile dysfunction and delayed ejaculation in our servicemen reported above. We hypothesize an etiology arising in part from Internet pornography-induced alterations in the circuits governing sexual desire and penile erections. (más…)