The Body Language

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The term kinesics was coined by anthropologist Ray Birdwhistell in 1952 and refers to the interpretation of body movements, facial expressions, and gestures. Understanding the grammar of kinesics can be difficult because it requires careful longitudinal observations and are situationally dependent. To add to the issues not everyone has the same body language, however, some nonverbal behaviors are believed to originate from the limbic brain and are universal.
Much of the interpretation of kinesics seems to be in some cases speculative offering a range of possibilities and other interpretations are obvious. For example nail biting is obviously nervous behavior that I think all people recognize. However, Joe Navarro claims that bouncing
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It records memories of behaviors and is responsible for what we call emotions. The hippocampus, amygdala, and hypothalamus are the main components of the limbic brain. The limbic brain is where make value judgments that influence on our behavior. It is thought that this part of the brain reacts reflexively and is difficult to disguise or eliminate.
The neocortex first appeared in primates and is most developed in humans. These developed hemispheres are thought to be responsible for the development of language, abstract thought, and consciousness. The neocortex has almost limitless learning abilities. However, the reptilian, limbic, and neocortex do not operate independently. They have many connections with one another.
Terms for these parts of the brain originated in the 1940s, and some neuroscientists have suggested that the concept should be abandoned. “However, while the limbic system remains the predominate explanation (both in neuroscience and popular culture) of how the brain makes emotion, it is a flawed and inadequate theory of the emotional brain” (LeDoux 2003). The limbic system theory has trouble explaining why damage to limbic areas like the hippocampus can result in deficits with cognition and memory. When the limbic system is activated in a purely cognitive task it is assumed that there must have been some emotional component to the task. Many researchers seem to think this explanation is based in tradition rather than facts.
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