منابع مشابه
Male or Female? Brains are Intersex
The underlying assumption in popular and scientific publications on sex differences in the brain is that human brains can take one of two forms "male" or "female," and that the differences between these two forms underlie differences between men and women in personality, cognition, emotion, and behavior. Documented sex differences in brain structure are typically taken to support this dimorphic...
متن کاملSexual Arousal of Male - to - Female Transsexuals : Male - typical or Female - typical Patterns ?
n Eleven post-operative male-to-female transsexuals were exposed to sexual stimuli on video while physiological (vaginal photoplethysmographic) and subjective measures of sexual arousal were being recorded. The comparison of their responses to male versus female stimuli, combined with their orientations (attracted to men versus women), illustrated a target specific pattern of sexual arousal acr...
متن کاملNeither male gonadal androgens nor female reproductive costs drive development of sexual size dimorphism in lizards.
Sexual size dimorphism (SSD) is an extensively studied phenomenon in animals, including reptiles, but the proximate mechanism of its development is poorly understood. The most pervasive candidates are: (1) androgen-mediated control of growth, i.e. a positive effect of gonadal androgens (testosterone) on male growth in male-larger species, and a negative effect in female-larger species; and (2) ...
متن کاملPsychiatry: mindless or brainless, both or neither?
After a period marked by one-sided emphasis on psychodynamics and social issues, or what could be called "brainless" psychiatry on account of its relative neglect of cerebral processes, we are witnessing an opposite trend towards extreme biologism or "mindless" psychiatry. The pendulum has swung periodically from one to the other of these reductionistic positions throughout the history of psych...
متن کاملMale or Female? The Answer Depends on When You Ask
A key decision in the life of an organism is whether to be male or female. In Drosophila, each cell makes this choice independently of its neighbors such that diploid cells with one X chromosome (XY) are male and those with two chromosomes (XX) are female. In classic experiments carried out more than 80 years ago, Calvin Bridges made two important conclusions about how sex is determined in flie...
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ژورنال
عنوان ژورنال: M/C Journal
سال: 2000
ISSN: 1441-2616
DOI: 10.5204/mcj.1863