[rael-science] Findings Illuminate Basis in Brain for Social Decisions, Reactions‏

วันจันทร์ที่ 29 ตุลาคม พ.ศ. 2555

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Source: http://www.alnmag.com/news/findings-illuminate-basis-brain-social-decisions-reactions

Findings Illuminate Basis in Brain for Social Decisions, Reactions

News Posted: October 24, 2012

Insights into the wiring and firing of the “social brain” in humans and primates reveals the brain areas important in altruistic motives and behavior, and the brain regions that respond to the pain of discrimination. The findings were presented at Neuroscience 2012, the annual meeting of the Society for Neuroscience and the world’s largest source of emerging news about brain science and health.
The social brain consists of the structures and circuits that help people understand others’ intentions, beliefs, and desires, and how to behave appropriately. Its smooth functioning is essential to humans’ ability to cooperate. Its dysfunction is implicated in a range of disorders, from autism, to psychopathology, to schizophrenia.
Today’s new findings show that:
  • Primates employ three different parts of the prefrontal cortex in decisions about whether to give or keep prized treats. These findings illuminate a poorly understood brain circuit, and offer possible insights into human sharing and other social behavior (Steve Chang, abstract 129.10, see summary below).
  • Different brain regions are engaged in altruistic behavior that is motivated by genuine caring versus altruistic behavior motivated by a concern for reputation or self-image (Cendri Hutcherson, abstract 129.06, see summary below).
  • The experience of racial discrimination triggers activity in the same brain regions that respond to pain, social rejection, and other stressful experiences (Arpana Gupta, abstract 402.06, see summary below).
Another recent finding discussed shows that:
  • Competition against a human opponent or a computer engages the same parts of the brain, with one exception: the temporal parietal junction is used to predict only a human’s upcoming actions (Ronald Carter, see speaker’s summary below).
“Whenever we engage with others — or even anticipate others’ responses to us — the social brain is at work, shaping our actions, reactions, and interactions,” said press conference moderator Anna Rose Childress, of the Univ. of Pennsylvania, an expert in neuroimaging and addiction research. “The more we understand the brain processes that underlie basic social emotions, the better we will be able to address conditions that involve social dysfunctions.”

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"Ethics" is simply a last-gasp attempt by deist conservatives and
orthodox dogmatics to keep humanity in ignorance and obscurantism,
through the well tried fermentation of fear, the fear of science and
new technologies.
 
There is nothing glorious about what our ancestors call history, 
it is simply a succession of mistakes, intolerances and violations.
 
On the contrary, let us embrace Science and the new technologies
unfettered, for it is these which will liberate mankind from the
myth of god, and free us from our age old fears, from disease,
death and the sweat of labour.
 
Rael
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