However, the exact mechanism was unknown. The brainstem, which is positioned above the spinal chord, is responsible for our instinctual impulses and behaviors, and the prefrontal cortex is the brain area which controls the manifestation of our impulses.
As part of the new research published on Jan. Further, the team wanted to confirm the hypothesis as to which instinctive behavior is inhibited by the region of the brain. They observed that, when it comes to mice that were tortured by a bully counterpart, the connection is weaker, and the mice show more signs of being scared. Following this discovery, the team concluded that it is possible to create through drugs the same reaction in mice that have never been aggressed by blocking the connection between the brainstem and the prefrontal cortex.
These findings define a specific neural projection by which the prefrontal cortex can control and adapt social behavior," noted the research.
The research represents an anatomical explanation on how easy it is to control behavior compared with impulses. The existence of right-handers and left-handers provides an interesting example of the relationship among evolution, biology, and social factors and how the same phenomenon can be understood at different levels of analysis Harris, ; McManus, At least some handedness is determined by genetics. But culture also plays a role. In the past, left-handed children were forced to write with their right hands in many countries, and this practice continues, particularly in collectivistic cultures, such as India and Japan, where left-handedness is viewed negatively as compared with individualistic societies, such as Canada and the United States.
There are both advantages and disadvantages to being left-handed in a world where most people are right-handed. One problem for lefties is that the world is designed for right-handers. Automatic teller machines ATMs , classroom desks, scissors, microscopes, drill presses, and table saws are just some examples of everyday machinery designed with the most important controls on the right side. Despite the potential difficulty living and working in a world designed for right-handers, there seem to be some advantages to being left-handed.
Throughout history, a number of prominent artists have been left-handed, including Leonardo da Vinci, Michelangelo, Pablo Picasso, and Max Escher. Left-handed people are also better at envisioning three-dimensional objects, which may explain why there is such a high number of left-handed architects, artists, and chess players in proportion to their numbers Coren, In sports in which handedness may matter, such as tennis, boxing, fencing, or judo, left-handers may have an advantage.
They play many games against right-handers and learn how to best handle their styles. Right-handers, however, play very few games against left-handers, which may make them more vulnerable. This explains why a disproportionately high number of left-handers are found in sports where direct one-on-one action predominates. In other sports, such as golf, there are fewer left-handed players because the handedness of one player has no effect on the competition. At this point, however, this idea remains only a hypothesis, and determinants of human handedness are yet to be fully understood.
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Click here for instructions on how to enable JavaScript in your browser. Skip to content Presented by Nick Jikomes All animals, including humans, display a variety of innate motivational drives built in to the architecture of their brains.
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