Sunday 28 November 2010

Imaging Theory of Mind Development: TED Saxe Presentation



Theory of Mind relates to the development of an ability to understand the thoughts and emotions of others.  fMRI has provided significant insight into the brain region (right parietal-temporal junction) associated with this ability.  Dr. Rebecca Saxe from MIT has been a leader in this research.  Posted above is her TED talk related to her research--it is about 16 minutes.  Posted below are my notes on the presentation:
  • As scientist I am interested in how it's so easy to understand what is on other minds.
  • Humans have an amazing capacity to understand what's on the minds of others.
  • The brain's has a special region dedicated to this function
  • Right temporal parietal junction (RPTJ)
  • This area has no other major function, it is specific for reading others thoughts
  • Children take a long time to develop this skill
  • Between ages 3 and 5they begin to understand others can have thoughts different than their own
  • Video presented that demonstration of testing this skill in children
  • Understanding what is on other people's mind important for moral development
  • fMRI studies allow understanding how this brain region develops--from less to much more specialized
  • Even adults vary in their ability to understand the thoughts of others
  • Video demonstrating testing this skill in adults
  • fMRI imaging in adults shows variability in activation of RPTJ with probe
  • The function of this area of the brain can modified using transcutaneous magnetic stimulation (rTMS)
  • Applying rTMS to the RPTJ modifies level of rating blame 
  • Q and A period
  • Saxe notes the potential misuse of this research and technology
  • There has been interest from the Department of Defense in her work
Posted below is a recent research publication related to the work from the TED presentation. A key point from the manuscript is that Theory of Mind development appears to extend well past the age of 6, the age currently accepted as the typical age of development.


Dr. Saxe's lab for publication list and more information is here.


Saxe RR, Whitfield-Gabrieli S, Scholz J, & Pelphrey KA (2009). Brain regions for perceiving and reasoning about other people in school-aged children. Child development, 80 (4), 1197-209 PMID: 19630902

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