What role does the brain play during an erection? What factors are related to the level of sexual ability

If direct genital stimulation can trigger an erection response at the spinal cord level, what is the role of the brain? Although it may seem that the penis sometimes has its own thoughts, the brain plays a crucial role in the process of integrated response.

Tactile stimulation of the penis can trigger an erection through the spinal cord, but sex appeal usually relies on the brain, which can provide a pleasant sensation and can also focus on sexual stimulation. Attention, sexual fantasies, memories, and other aspects of a loved one become signals sent out by the brain, which act on the penile arterial system through the spinal cord to maintain and strengthen the strength of an erection. When the brain emits an erection reflex signal, it is transmitted in the form of nerve impulses to the high center of the spinal cord erection reflex located in the lumbar spine. The role of the high center of the spinal cord erection reflex is like a transit station between the brain and the penis, allowing sensory, sensory, and emotional responses to play a role in the erection reflex. When the neural channel between the high center of the brain and spinal cord erection reflex is severely damaged or blocked, men cannot achieve an erection without psychological stimulation.

The brain can also suppress sexual responses. People who are overly anxious about their own performance cannot achieve an erection even if they are directly stimulated strongly by the penis. For example, a person believes that sexual pleasure is evil and dirty, and when a sexual partner stimulates the penis, their heart is filled with anxiety and guilt, and they do not have an erection. Some men, especially those in adolescence, have an erection reflex that can easily cause the penis to be rubbed against their underwear. Attractive women walking by their side may experience an erection with flashing sexual fantasies. In awkward situations, middle and high school students stand in front of all their classmates or appear in public due to transfer. In order to drive away sexual fantasies and eliminate erections, many adolescent men suddenly become more interested in studying courses before the class bell rings. After men reach adulthood, an erection of the penis requires more stimulation. If women in their thirties and forties cannot cause their male partner to have an instant automatic erection when naked, they will feel their charm diminish. Elderly men do not have spontaneous erections, and direct stimulation of the penis has become an important means of sexual arousal.