“When you see that at the cellular level, you realize that the brain can change because of experience.”
“I should think we might fairly gauge the future of biological science, centuries ahead, by estimating the time it will take to reach a complete, comprehensive understanding of odor.”
This effect helps to explain why the odor preferences of mammals, including humans, appear to develop before birth, but it probably has nothing to do with visual input except via its association with olfactory/pheromonal input, neurogenesis, learning and memory.
Snap, Crackle, Pop: The ridiculous proposal that genes are activated by sound dissolves into the background noise of unintelligent and unrealistic expectations inspired by journalism for the masses
The prenatal migration of GnRH neurosecretory neurons allow human pheromones to effect GnRH pulsatility, which modulates the concurrent maturation of the neuroendocrine, reproductive, and central nervous systems, thus influencing the development of human reproductive sexual behavior and other behavior.
Food odors and social odors influence the same basic neurophysiological mechanism (i.e., the GnRH pulse), which allows them to alter the gene-cell-tissue-organ-organ system pathway which links them to hormones and behavior.