--Original published at JanellesCollegeBlog
For this first impression post, I chose to watch the Ted Talk video titled, “Rebecca Saxe: How we read each other’s mind.” I was drawn to this video because of the title. I was really curious about the brain’s ability to read other people, and what they are thinking or what emotions they are feeling. I thought it would be interesting to see if there was a way to manipulate how others feel and act.
In this talk, the speaker presented about a specific brain region that allows us to read each other. This brain region is called the right temporoparietal junction (RTPJ). In adults, this region is specialized while in children, it has to develop slowly. I thought this was particularly interesting because we learned about children being egocentric, and this helps provide an in depth explanation about why this happens. The development of this brain region occurs between the ages of 3 and 8. The speaker then continues to talk about the causal role that this brain structure has in individuals. She explains that the differences between people, and their ability to think about others is caused by differences between this part of the brain. Some people use the RTPJ more than others to think about other people and their thoughts. Finally, the speaker continues to talk about manipulating this part of the brain with transcranial magnetic stimulation (TMS) to influence the moral judgement of individuals. TMS technology sends a small magnetic beam into the brain and when targeted to a specific area can change the effect of this area and the behavior of the person. She provides examples of research that she’s done with TMS and the RTPJ. She found that she can change the moral judgement of people by putting the magnetic beam on the RTPJ.
In this talk, I found the videos showing the children and their development and maturation of the RTPJ the most interesting. It was eye-opening to see the reasoning behind children’s responses to a pretend situation and how they develop as they get older and as we know, the RTPJ matures and specializes. By looking at children of different ages, you can clearly see how the RTPJ develops.
The presenter was trustworthy because she mentions that she is a teacher and a cognitive neuroscience scientist. I also think that she is trustworthy because she included videos of her actual studies in the presentation. This provides validity to her results because you can see her first hand experience and how she got to her conclusions of the experiments. The only place where I questioned her trustworthiness was when she mentioned that the average “typical adult mind” that was studied was actually only from MIT graduates. This would not be a representative sample of the human population, so I was skeptical of the conclusions that she was drawing to humans.
A research question that I would be interested in studying would be if you can change the way individuals perceive other people’s emotions by using TMS on the RTPJ. To conduct this study, I would have the participants look at pictures of the faces on people showing an emotion. I would have them state the emotion that they saw in the face of the person, and then I would admit a magnetic pulse of TMS to the RTPJ to see if the responses change based on the magnetic beam. It would be interesting to see if you could manipulate how the participants viewed other people and their emotions by manipulating a specific part of their brain. I would only conduct this study on adults who have a fully developed RTPJ in order to make the results more reliable and trustworthy as to not bring in the variables of underdeveloped RTPJs.