A dual physiological character for sexual function: libido and sexual pheromones

Area of Science:

• Neuroscience
• Human Sexuality Research
• Physiology

Background:

• Human sexual response involves complex cerebral, spinal, and peripheral elements.
• Cerebral aspects like libido, sexual arousal, and orgasm are poorly understood.
• Previous models incorrectly assumed descending control from the brain to spinal cord centers.

Purpose of the Study:

• To propose a new neurophysiological model for human sexual function.
• To integrate existing research on the cerebral duality of sexual arousal, hormones, ejaculation, pheromones, and libido.
• To advance understanding of sexual function and relational behavior.

Main Methods:

• Review and integration of existing scientific literature published after 2001.
• Development of a novel neurophysiological model based on evolutionary concepts.
• Synthesis of findings related to cerebral duality in sexual physiology.

Main Results:

• Human sexual response, including ejaculation, is proposed as a dual cerebral process.
• Arousal sensation is hormonally modulated, while libido perception is pheromonally modulated.
• Two distinct neurophysiological axes may exist in both males and females.

Conclusions:

• Ejaculation is a dual cerebral process with distinct afferent components for arousal and libido.
• The proposed model suggests potential dual neurophysiological axes for sexual function in humans.
• Further research into the correlations and implications of these mechanisms is warranted.