Scientists from Harvard Medical School have made an intriguing discovery about the role of vibrators in sexual stimulation. They have found that a cluster of neurons called Krause corpuscles, which are located in the clitoris and penis, respond directly to vibration. This means that the pleasure experienced during vibrator use is not solely due to the intensity of the moment but also due to the specific response of these nerve-endings.
Krause corpuscles were first identified in the 1800s but their purpose remained a mystery until now. The researchers at Harvard Medical School conducted tests on male and female mice to explore the density and responsiveness of these neurons. They found that the clitoris had a significantly higher density of Krause corpuscles compared to the penis.
During the experiments, the mice were anesthetized and various stimuli were applied to their genitals. The results showed that Krause corpuscles were most responsive to touch with a vibrating device or a paintbrush. Male mice exhibited strong erectile responses to both brushing and vibration, indicating that these neurons played a crucial role in sexual arousal.
To further understand the function of these neurons, the scientists also tested whether they could be activated by light. The male mice showed erections when the neurons were illuminated with blue light. However, the researchers did not conduct this experiment on female mice due to the difficulties in visually observing their sexual responses.
In addition, the researchers genetically engineered some female mice to have fewer Krause corpuscles to examine their response to sexual advances. These mice were found to be less receptive to male advances and ended sexual encounters faster than regular females. Similarly, males without Krause corpuscles took longer to initiate sex, withdrew earlier, and had a lower likelihood of ejaculating compared to typical males.
Based on these findings, the researchers concluded that stimulating the Krause corpuscles is essential for motivating sexual activity and producing healthy sexual responses. This is potentially due to the pleasurable sensations that these neurons generate.
The clitoris, unlike any other human organ, is specifically dedicated to providing pleasure. It consists of nerves that transmit electrical impulses between the brain and the rest of the body, allowing women to feel and respond to touch. While the clitoral tip is external, a significant part of the organ is internal, including the dorsal nerve that runs along its shaft and is responsible for clitoral sensation.
In men, during ejaculation, the release of sperm is facilitated by muscle contractions between the anus and scrotum called the bulbospongiosus and ischiocavernosus.
These findings shed new light on the complex mechanisms underlying sexual pleasure and highlight the importance of these mysterious nerve-endings in facilitating sexual arousal and satisfaction.
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