Questionable Motives

May 4, 2010

What do you predict will happen?

Filed under: belief,brain,Cause and Effect,Faith,Neuroscience,Religion — tildeb @ 3:38 pm

Let’s do some predicting of our own. What do you think happens to our brains when we fall under the influence of charismatic individuals like faith healers?

From New Scientist:

To identify the brain processes underlying the influence of charismatic individuals, Uffe Schjødt of Aarhus University in Denmark and colleagues turned to Pentecostal Christians, who believe that some people have divinely inspired powers of healing, wisdom and prophecy.

Using functional magnetic resonance imaging (fMRI), Schjødt and his colleagues scanned the brains of 20 Pentecostalists and 20 non-believers while playing them recorded prayers. The volunteers were told that six of the prayers were read by a non-Christian, six by an ordinary Christian and six by a healer. In fact, all were read by ordinary Christians.

Oh, that’s good. So what do you think the findings might be? Intriguing, isn’t it?

Let’s see:

Only in the devout volunteers did the brain activity monitored by the researchers change in response to the prayers. Parts of the prefrontal and anterior cingulate cortices, which play key roles in vigilance and scepticism when judging the truth and importance of what people say, were deactivated when the subjects listened to a supposed healer. Activity diminished to a lesser extent when the speaker was supposedly a normal Christian (Social Cognitive and Affective Neuroscience, DOI: 10.1093/scan/nsq023).

Schjødt says that this explains why certain individuals can gain influence over others, and concludes that their ability to do so depends heavily on preconceived notions of their authority and trustworthiness.

Are we surprised the brain effect is based on the subject’s preconceived notions? Only if you are a believer in supernatural agencies, I suspect.

But if preconceived notions of authority and trustworthiness are indeed what causes the effect in the brain, then studies of a similar effect of other people in authority and trustworthiness should yield the same results. Does the study’s author take this into consideration?

It’s not clear whether the results extend beyond religious leaders, but Schjødt speculates that brain regions may be deactivated in a similar way in response to doctors, parents and politicians.

So we wait and wonder…

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