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Stanford researchers have identified the brain circuitry that enables male mice to quickly identify the sex of an unfamiliar mouse. Because mice and humans share some of the same hard-wired circuitry, the finding may also apply to humans. Liz Unger. A male mouse identifies the sex of an unfamiliar mouse because of hard-wired brain physiology, not previous experience, Stanford University School of Medicine investigators have found. But the circuitry in their brains that guides those decisions remains to be located.
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'It's really a hard life': love, gender and HIV risk among male-to-female transgender persons

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How men's and women's brains are different | Stanford Medicine

Please refresh the page and retry. He says he fancies me and always seems turned on. Sometimes he gets hard - but when we try for sex he loses his erection. I find it difficult to orgasm even if he tries other things because I keep thinking.
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Why are good men so hard to find?

Editor's note: Dr. She is founder and director of the Women's Mood and Hormone Clinic. CNN -- Although women the world over have been doing it for centuries, we can't really blame a guy for being a guy.
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But he did have a good reason. So, he zeroed in on sex-associated behavioral differences in mating, parenting and aggression. At the time, this was not a universally popular idea. The neuroscience community had largely considered any observed sex-associated differences in cognition and behavior in humans to be due to the effects of cultural influences.
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