sam harris
Neuroscience of Belief
02/04/15 13:21 Filed in: Neuroscience | Brain Health
In the current issue of New Scientist I came across a good article on the neuroscience of belief. Graham Lawton writes, in part: Beliefs define how we see the world and act within it; without them, there would be no plots to behead soldiers, no war, no economic crises and no racism. There would also be no cathedrals, no nature reserves, no science and no art. Whatever beliefs you hold, it's hard to imagine life without them. Beliefs, more than anything else, are what make us human. They also come so naturally that we rarely stop to think how bizarre belief is.
In 1921, philosopher Bertrand Russell put it succinctly when he described belief as "the central problem in the analysis of mind". Believing, he said, is "the most 'mental' thing we do" – by which he meant the most removed from the "mere matter" that our brains are made of. How can a physical object like a human brain believe things? Philosophy has made little progress on Russell's central problem. But increasingly, scientists are stepping in.
The neuroscientific investigation of belief began in 2008, when Sam Harris (Harris, S., Sheth, S. A. and Cohen, M. S. (2008), Functional neuroimaging of belief, disbelief, and uncertainty. Ann Neurol., 63: 141–147) at the University of California, Los Angeles, put people into a brain scanner and asked them whether they believed in various written statements. Some were simple factual propositions, such as "California is larger than Rhode Island"; others were matters of personal belief, such as "There is probably no God". Harris found that statements people believed to be true produced little characteristic brain activity – just a few brief flickers in regions associated with reasoning and emotional reward. In contrast, disbelief produced longer and stronger activation in regions associated with deliberation and decision-making, as if the brain had to work harder to reach a state of disbelief. Statements the volunteers did not believe also activated regions associated with emotion, but in this case pain and disgust.
To read the full article, click here.
In 1921, philosopher Bertrand Russell put it succinctly when he described belief as "the central problem in the analysis of mind". Believing, he said, is "the most 'mental' thing we do" – by which he meant the most removed from the "mere matter" that our brains are made of. How can a physical object like a human brain believe things? Philosophy has made little progress on Russell's central problem. But increasingly, scientists are stepping in.
The neuroscientific investigation of belief began in 2008, when Sam Harris (Harris, S., Sheth, S. A. and Cohen, M. S. (2008), Functional neuroimaging of belief, disbelief, and uncertainty. Ann Neurol., 63: 141–147) at the University of California, Los Angeles, put people into a brain scanner and asked them whether they believed in various written statements. Some were simple factual propositions, such as "California is larger than Rhode Island"; others were matters of personal belief, such as "There is probably no God". Harris found that statements people believed to be true produced little characteristic brain activity – just a few brief flickers in regions associated with reasoning and emotional reward. In contrast, disbelief produced longer and stronger activation in regions associated with deliberation and decision-making, as if the brain had to work harder to reach a state of disbelief. Statements the volunteers did not believe also activated regions associated with emotion, but in this case pain and disgust.
To read the full article, click here.