Throughout history we have been operating under the guise that we only use 10% of our brain power. The truth is this tracks back to when William James stated how the average human being cannot attain more that 10% of their brain of intellectual potential; experts have misinterpreted this from "10% of our capacity" into “10% of our brain.” There is evidence in brain imaging, brain damage, how things function, micro-structure analysis, and metabolic studies that disprove this myth. From brain imaging we can see that no part of the brain shows up as inactive. In brain damage we see that only in a vegetative state due to trauma do parts of our brain become inactive or unused. Furthermore, the idea of only 10% of our brains being utilized suggests that if we were using more than 10% of our brains, we would be operating at a higher level, but we have many different parts of our brain for different functions. But if we were to use 100% of our brains at once it would be a jumbled mess of brain …show more content…
The rate and depth of respiration is calculated by a phonograph cloaked in the region of the chest. Skin response is calculated through electrodes attached to a subject 's fingertips. There is a controversial problem with the accuracy of the polygraph test. Subject 's can be in a nervous state of mind causing there heart rate to go faster. Though they might not be guilty they could be panicky because they could be trying their best to prove to them they are not guilty while they really are not guilty. "In real-world situations, it 's very difficult to know what the truth