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Lecture

SEX, SEXUALITY & THE BRAIN .pdf

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Department
Neuroscience
Course
NSCI 201
Professor
Evan Balaban
Semester
Winter

Description
LECTURE NOTES SEX SEXUALITYTHE BRAIN3 important patterns regarding sex in vertebrate speciesNot all species have genetic form of sex determinationEg turtles sex is determined by the environment Not at species have two sexesAll female species of amphibians and reptiles produce diploid eggs that hatch into females wo male fertilization parthenogeneticallyNot all species remain the same sex throughout their lifeEg some sh mature as a certain sex then change and function as the opposite sex later in life Change in sex involves change in gonads secondary sexual characteristics and internal changes of the brain Driven by environment Note sex characteristics are developmentally and evolutionary exibledifculty of discussing biology of sexual characteristics in neutral fashionThe ways in which the info is presented to students affects how they internalize itExperiment investigated sex differences and its affects on mathematical performance on an exam 2 math sections separated by an essay contents of essay was manipulation of experimentOne of the essays was standard stereotyped threatSST situation in which one is reminded if the disadvantaged state of your grpSST arguing women are worse than math at men due to genetics Caused decreased in womens performance on second testConclusion the means by which sexual info is presented affects interpretationexample of neural sex differenceFemales release pheromones that males detect bc males contain receptors expressed on their antennaReceptors in males innervate a collection of cell bodies that is geographically isolated from other odorant receptors in their antennal lobeMany sex differences in the brain are linked to things occurring in the periphery Transplant male antenna onto female brain female brain will develop macroglomerular complex Thus organization is driven by receptor neurons that are chemically and functionally diff from receptors both females and males sharesChromosomal sex determination of gonadal phenotypePhenotypic sex externally visible phenotypic charactersSexual identity an indvls subjective understanding of their own sex phenotypeSexual orientation an indvls subjective sense of emotional identication with and sexual attraction towards othersHomosexual heterosexual bisexual some arguments for asexualGender combines an indvls sexual identity and sexual orientatio
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