Why do humans have such large brains? Over a span of nearly seven million years‚ the human brain has tripled in size‚ with most of the growth being seen in just the last two million years. Although many explanations for the growth of the human brain have been presented‚ one hypothesis that proves to be most accurate is the Social Brain Hypothesis as presented by Robin I.M. Dunbar. This hypothesis attempts to explain the cause in brain size evolution by attributing it to social relations and social
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families‚ scientists could determine that the contribution of genes to longevity accounted to ~25%. Genes we inherit from our parents‚ can decide our longevity. Studies among centenarians‚ suggests that their offspring have relatively lower prevalence of chronic age associated
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Left Brain vs. Right Brain: Implications of Learning Foundations of Online Learning Abstract A left-brain dominant person’s attributes are different than that of a right-brained person. This difference causes these two groups to have different learning styles. A left-brain dominant tends to be better at spelling and math. This is because this person can see all of the pieces. A right- brain dominant person tends be better at writing‚ biology‚ and other hands on subjects
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Soundtrack Of My Life Music is an important to our culture and in many different cultures around the world. Music has been around around for ever we use music to describe everyday struggles and problems that are going on in our lives weather its losing someone you love or being happy. We could use music to remember someone or remember an event that has happened in our lives just by playing a song would take us back in the moment and would make you think about someone you were with or something
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own jobs‚ war has changed and has changed a lot. These will be explained in the following and may entice others to study the topic. With so many outcomes and different ways of life the possibilities are endless and the topics just as many as the reader can and will think of while reviewing the articles. Here are the life and times of the medieval era. Soldiers where many times masters of war and where trained masterfully till the teacher felt they were ready. Knights of the time wore armor to protect
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Effects of alcohol on brain functioning and neurotransmitters The consumption of alcohol can cause an effect on several parts of the brain including the hypothalamus‚ pituitary gland‚ medulla and the limbic system (How alcohol works 2008). Each sector responds differently to alcohol‚ causing changes in specific behaviors. Cerebral cortex The role of the cerebral cortex is to decipher information received from the senses‚ processing thought‚ speech‚ and memory and indicating the majority of
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in power“BRAIN POWER” 1.) The six firefighter was able to survive because of the brain’s activity it made the time run slower to cope up with the situation. As the lead of the team heard of the warning his brain took control. Two parts of the brain were responsible‚ diencephalon: thalamus and hypothalamus‚ they manage the fight or flight response hardwired. This drives a person to do an action without even thinking. The control center collects information from the situation outside. Usually‚ the
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like coffee and tea. Caffeine can also be found in soft drinks‚ and it is regarded as the most widely consumed stimulant drug in the world based on Nehlig‚ Daval‚ & Debry (1992) research. The interaction of caffeine with adenosine receptors in the brains makes an individual more alert. A moderate intake of caffeine results in small healthy risks while high doses could be a catalyst to negative effects like anxiety‚ insomnia‚ and tachycardia. Research has shown that caffeine is widely abused. Clinical
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and any other service provider visible elements. Researchers such as Czepiel et al 1990 believe that the quality of the interaction between customers and service providers during the service encounter is important because it is at this level where customers judge the services provided to them. It can therefore be argued that to a greater extent the service encounter determines the quality of the service on offer both positively and negatively when analysing the interaction between service employees
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Artificial electrical stimulation of the nervous system is one of the foundations of neurotechnology. However‚ the use of electrical currents to stimulate the nervous system presents several challenges. It is difficult to achieve selective stimulation of only the targeted neurons without activating neighboring neurons. Further‚ electrochemical reactions at the electrode-tissue interface may lead to electrode dissolution or tissue damage. As an alternative‚ magnetic stimulation can be used to stimulate
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