Your outlook on situations and experiences can be broken down to be defined as either a positive outlook or a negative outlook. The left prefrontal cortex in a resilient person can be 30 times that of someone who is not as resilient – this means that there is a a pretty big difference in brain activity within people who are clinically depressed and those who are not clinically depressed. For people who suffer from depression, activity in the right prefrontal is much higher. For people who are healthier and have an overall positive outlook on life, activity is the left prefrontal is greater. In other words, left side activity equals positive and right side equals negative.
The thing to remember about these specific findings is that everyone has ups and downs in their lives, so the left and/or right asymmetry can change. This relates back to the first style – adversity – under certain difficult periods of people’s lives, they may behave and/or react differently during these times. This is simply just part of the ebb and flow of life as a human.
Dr. Richard Davidson has been doing research on the emotional styles of the brain for over twenty years. Dr. Davidson’s research has been on all kinds of walks of life, including everyday hard-working Americans, undergraduate volunteers, children and infants, and also a Tibetan monk community. These monks lent their time and brains to science by having Dr. Davidson run MRI’s and EEG’s on them. In his findings, Dr. Davidson has found that these monk’s left prefrontals were off the chart compared to his other findings making this evidence for the stark difference in the brain activity that underlie emotional and personality differences. The monks are constantly smiling, people of good will and constantly help one another. And their brains can prove it.