WEDNESDAY, Aug. 22 (HealthDay News) -- Self-awareness is the product of pathways that are spread throughout the brain, according to a new study.
Researchers say their findings challenge previous theories that people's awareness of their own feelings and behaviors was confined to just three specific areas of the brain.
"What this research clearly shows is that self-awareness corresponds to a brain process that cannot be localized to a single region of the brain," study co-author, David Rudrauf, a former assistant professor of neurology at the University of Iowa, said in a university news release. "In all likelihood, self-awareness emerges from much more distributed interactions among networks of brain regions."
Rudrauf is now a research scientist at the INSERM Laboratory of Functional Imaging, in Paris.
For the study, researchers examined a 57-year old, college-educated man with extensive brain damage to the insular cortex, the anterior cingulate cortex, and the medial prefrontal cortex -- the three areas previously thought to correspond to self-awareness.
Known as "Patient R," the man passed all standard tests for self-awareness. He could also identify himself in the mirror or in photos taken at different times in his life.
Following an in-depth interview, the researchers found that Patient R had depth and insight into himself, enabling him to examine his own thoughts and feelings.
"During the interview, I asked him how he would describe himself to somebody," study first author Carissa Philippi, who earned her doctorate in neuroscience at the University of Iowa, said in the news release. "He said, 'I am just a normal person with a bad memory.'"
Philippi is now a postdoctoral research scholar at the University of Wisconsin-Madison.
Patient R was able to perceive that actions were the result of his own intentions. Aside from damage to the part of his brain that updates new memories, whi
All rights reserved