How does the brain evaluate evidence and form opinions?

The human eye has over 100 million rod cells. Cones require a lot more light and they are used to see color. We have three types of cones: blue, green, and ... Do humans use only 10 percent of their brains? In the new movie "Lucy," starring Scarlett Johansson and Morgan Freeman, a mysterious drug allows Lucy to use 100 ... Concern around the issue has only grown now that more than 100 ... “The challenge is nobody sees what happens to the brain when someone gets a concussion,” Bayly ... Biologically speaking, fertilization (or conception) is the beginning of human development. Fertilization normally occurs within several hours of ovulation ( ... Ketosis is a process that occurs when your body uses fat as its main fuel source. ... The ketones, or ketone bodies, become your body and brain's main source of ... ... human brain occurs in hundreds of millions of individuals each year. The brain's 100 trillion or so interconnections provide the physical basis for its ... What happens exactly when our brain learns and stores something new? ... 100 billion nerve cells in the human brain receives signals from other cells ... Jun 22, 2012 ... Neuroscientists have become used to a number of “facts” about the human brain: It has 100 ... This happens as the rate of variation in ... ... use 100% of our brain. Various studies have shown that even simple tasks ... human consciousness and perception, rather than a literal statement about brain usage ... Jul 16, 2014 ... ... human beings only use 10 percent of their brain's capacity…Imagine if we could access 100 percent.” It's hard not to believe Morgan Freeman ...