Posts Tagged ‘vmPFC’

In Search of the Daimon Inside

March 4, 2017

The title of this post is the title of a section in Victor Strecher’s Book, “Life on Purpose.”  The Japanese have a word for “Life on Purpose” and that is ikigai, which is used in these posts because it has an earlier appearance in this blog and is shorter.

The daimon is the term the Greeks used to represent the inner self.  Dr. Strecher and his research team was interested in learning how the affirmation of core values works in the brain.  This research was led by Emily Falk of the University of Pennsylvania.  The researchers started with already-identified  part of the brain related to the “self.”  It’s in an area called the ventromedial prefrontal cortex (vmPFC).  This part of the brain becomes active when we are processing information about our selves.

The researchers invited a group of sedentary people who would benefit from physical activity and gave each of them an accelerometer to measure activity changes.  After a week of learning about each participant’s activity patterns, the researchers used fMRI.  They asked half of them about the values they cared about most while scanning their brains.  For example, they’d ask a person who valued religion to “think of a time when religious values might give you a purpose in life.  Participants in the control group were asked to think about the values they cared least about.

Four four weeks following the scanning session, while their physical activity was still being monitored,  all participants were sent messages about increasing it.  Participants in the values affirmation group also received messages about their most important values, whereas those in the control group received messages about their least important values.

Compared to the control group, those in the group who considered their most important core values had greater activation of their vmPFC and went to increase their physical activity over the next month.  Moreover, the more the vmPFC became activated, the more physical activity occurred over the next month.  So the affirmation of core  purposeful values seemed to “open their minds” to change.

In another study psychologist Jennifer Crocker and her colleagues asked study participants either to write about their most important core value and why it was meaningful to them (the values affirmation group) or to write about their least important value and why it might be important and meaningful to other people (the control group).  Then, the participants were asked to rate how the essay they wrote made them feel.  Finally, they tested the participants’ defensiveness.  Participants affirming their most important values felt love, connectedness, and empathy, and these transcending feelings reduced their defensiveness.