Aurea Mediocritas @ 20:37

Seg, 03/05/10


Tenho um medo destas experiências que vêm confirmar lugares comuns! Nevertheless, here it is for your perusal:


"Mather and her colleagues asked male and female subjects to place their hand in ice water for three minutes, an activity that makes levels of the stress hormone cortisol shoot up over the next hour or so. Then these subjects—and a comparison group whose hands had been comfortably immersed in warm water—looked at angry or neutral faces while lying inside a brain scanner.

These conditions revealed a striking sex difference in the brain in the extent to which men and women process faces, and perform emotional assessments of others, under stress. The men under the influence of high cortisol levels showed less activity in a key face-processing region of the brain (the fusiform face area or FFA) than the unstressed men did, suggesting that stressful situations diminish the ability of men to evaluate facial expressions. By contrast, the brains of the women under strain worked harder on the faces: in these females, the FFA was more active than it was in women who did not experience the cortisol boost.

This sex difference was apparent not only in the face evaluation area, but also in a circuit of regions that enables people to internally simulate and understand the emotions of others. This circuit includes the insula, which governs feelings of empathy, and the temporal pole, which helps us understand others' states of mind. According to the researchers' analysis, stress appeared to increase the flow of information between these regions and the FFA in women, orchestrating a concerted response. But in males, cortisol worked to disconnect the brain's analysis of facial expression from its evaluation of others' emotions."


Link para o artigo aqui


Margarida @ 12:57

Ter, 04/05/10


São tão estúpidos! Ainda bem que tive também uma filha

Whatever happened to the bright ones

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