Different Brains, Different Realities Essay - 1468 Words

Different Brains, Different Realities? Most of us go through our days not questioning why separate aisles in toy stores are designated to boy-toys such as puzzles and blocks and girl-toys such as dolls and tea sets. We do not always consciously notice that men dominate certain professional fields while women do others. And why are there a higher percentage of gay men (or more feminized men) in the dramatic, passionate world of the performing arts? Are these sex trends all enculturation? If we do not stop to explore the origins and implications of our observations, we make the mistake of glossing over them with the non-informative, fact-of-life explanation that neglects the why of the issue. Perhaps one such why involves†¦show more content†¦The effects of steroid binding are realized in alterations in regional cell growth, proliferation, or death, which may then influence cell number, size, or packing density. Early migrational patterns, dendritic growth, and neuronal myelination may also be modified (2). One place where steroid binding appears to exert its effect is in the hypothalamus. The sexually dimorphic nucleus of the medial preoptic area (SDN-POA) is a sub-nucleus in the medial preoptic area that is approximately 2.5 times larger in males than in females. In addition, the presence of two sexually dimorphic cell groups has been confirmed in the preoptic-anterior hypothalamic area. There are four interstitial nuclei of the anterior hypothalamus and the two that are larger in the male brain are the INAH3 and INAH1. These hypothalamic findings are particularly noteworthy because the preoptic area has been shown to be sexually dimorphic in several other non-human species and more important, to be sensitive to prenatal or perinatal hormonal influences. The SDN-POA can be enlarged in female rats through the administration of a synthetic estrogen (diethylstilbestrol) which does not bind to AFP, indicating that masculinization of this structure is dependent on the intracellular conversion of testosterone toShow MoreRelatedPerception And Perception Of Perception1154 Words   |  5 Pageswith the brain to create reality we first have to better understand perception. Perception is the active process of selecting, organizing, and interpreting the information brought to the brain by the senses. Perception is an important part of creating reality because, your reality is determined by your memories, beliefs, culture, life experiences, as well as your senses and perception. Although sensation and perception work together to help create our reality they are two very different things. 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