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The book states that most common relationship problems between men and women are a result of fundamental psychological differences between the sexes, which the author exemplifies by means of its eponymous metaphor: that men and women are from distinct planets—men from Mars and women from Venus
So in a new study in 2015, researchers led by Daphna Joel, a behavioral neuroscientist at Tel Aviv University in Israel, tried to be as comprehensive as possible. Using existing sets of MRI brain images, they measured the volume of gray matter (the dark, knobby tissue that contains the core of nerve cells) and white matter (the bundles of nerve fibers that transmit signals around the nervous system) in the brains of more than 1400 individuals. They also studied data from diffusion tensor imaging, which shows how tracts of white matter extend throughout the brain, connecting different regions.
" Behavorial Science
"Behavioral neuroscience as a scientific discipline emerged from a variety of scientific and philosophical traditions in the 18th and 19th centuries
A study, of 46 participants (25 female and 21 male) participants were exposed to images that evoked positive, negative, or neutral emotions while undergoing fMRI brain scans. Participants were also asked to review their emotional responses when looking at the images.
Overall, women reported being more reactive to the emotional images. Meanwhile, higher levels of testosterone were most frequently associated with lowered sensitivity to the images, while higher estrogen levels, regardless of the person’s sex, almost always meant increased sensitivity.
When looking at the brain’s reaction to the images, the researchers found that the dorsomedial prefrontal cortex (dmPFC) and amygdala on the right hemisphere of the brain were activated in both sexes when viewing the images. However, the connection between these two parts of the brain was found to be stronger in men, leading to more interaction between the two parts and further decreased sensitivity to emotional stimuli.
The researchers explained that the reactions of amygdala and the dmPFC say a lot about how a person processes emotion. The amygdala is known as the part of the brain that detects threat, and often fires when a person is exposed to fear or sadness, while the dmPFC helps process social interactions and mediates perception, emotions, and reasoning.
“A stronger connection between these areas in men suggests they have a more analytical than emotional approach when dealing with negative emotions,” said Stéphane Potvin, associate professor at the University of Montreal’s Department of Psychiatry.
Researchers also observed that testosterone made this connection between the amygdala and dmPFC stronger.