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UN STUDIU STIINTIFIC ARATA CA CREIERUL INDIVIZILOR CU VEDERI CONSERVATOARE PREZINTA DEOSEBIRI COMPARATIV CU CEL AL PERSOANELOR CU CONVINGERI LIBERALE. Political views ‘hard-wired’ into your brain

Political views 'hard-wired' into your brain

Photo: CORBIS

Creierul persoanelor cu vederi conservatoare prezinta  deosebiri in comparatie cu  cel al oamenilor cu vederi mai democrate, au descoperit, cu surprindere, oamenii de stiinta

In cazul „conservatorilor”, o zona a creierului numita „amigdala” situata in centrul encefalului si care e asociata, in mare masura, cu anxietatea si emotiile, are dimensiuni mai mari; in schimb, este mai putin dezvoltat cortexul cingulat anterior, o zona asociata cu indrazneala si optimismul.

Diferentele au fost descoperite de o echipa de cercetatori de la Colegiul Universitar din Londra, Marea Britanie, care au scanat creierele mai multor voluntari, printre care si doi membri ai Parlamentului britanic (unul conservator, iar celalalt – laburist) si 90 de studenti; acestia din urma au fost, ulterior, chestionati in privinta convingerilor lor politice.

Insa, dat fiind faptul ca toti participantii erau adulti, nu se stie daca aceste caracteristici ale creierului sunt innascute sau creierul se dezvolta diferit in decursul timpului, sub influenta experientei.

Rezultatele studiului se coreleaza cu cele ale unui studiu american anterior, realizat la Universitatea California, si care arata ca unii oameni poseda o „gena liberala”, numita DRD4, a carei prezenta ii face pe posesori mai inclinati sa adopte vederi politice mai putin conventionale.

Political views ‘hard-wired’ into your brain

Tories may be born not made, claims a study that suggests people with right wing views have a larger area of the brain associated with fear.

Scientists have found that people with conservative views have brains with larger amygdalas, almond shaped areas in the centre of the brain often associated with anxiety and emotions.

On the otherhand, they have a smaller anterior cingulate, an area at the front of the brain associated with courage and looking on the bright side of life.

The „exciting” correlation was found by scientists at University College London who scanned the brains of two members of parliament and a number of students.

They found that the size of the two areas of the brain directly related to the political views of the volunteers.

However as they were all adults it was hard to say whether their brains had been born that way or had developed through experience.

Prof Geraint Rees, who led the research, said: „We were very surprised to find that there was an area of the brain that we could predict political attitude. „It is very surprising because it does suggest there is something about political attitude that is encoded in our brain structure through our experience or that there is something in our brain structure that determines or results in political attitude.” Prof Rees and his team, who carried out the research for the Today programme on BBC Radio 4, looked at the brain make up of the Labour MP Stephen Pound and Alan Duncan, the Conservative Minister of State for International Development using a scanner. They also questioned a further 90 students, who had already been scanned for other studies, about their political views. The results, which will be published next year, back up a study that showed that some people were born with a „Liberal Gene” that makes people more likely to seek out less conventional political views. The gene, a neurotransmitter in the brain called DRD4, could even be stimulated by the novelty value of radical opinions, claimed the researchers at the University of California

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02/01/2011 Posted by | DIVERSE | , , , , , , , | Lasă un comentariu

Ateii au creierul diferit de cel al credinciosilor

Creierul credinciosilor este diferit de cel al ateilor

Credinta ajuta la blocarea anxietatii si la minimizarea stresului, conform studiului unor cercetatori din cadrul Universitatii Toronto, care a dezvaluit diferentele creierului la credinciosi si necredinciosi.

Participantii au trecut prin testul controlului cognitiv Stroop, care presupune atasarea de cap a unor electrozi, in vederea masurarii activitatii creierului. In comparatie cu necredinciosii, cei care au credinta au aratat o activitate mai mica in zona cortexului anterior (ACC), o portiune a creierului care induce modificarea comportamentului, prin semnalizarea momentelor in care atentia si controlul sunt necesare. Acest fenomen are loc de obicei ca urmare a unor evenimente care produc anxietate, cum ar fi de exemplu atunci cand gresim. Cu cat este mai mare fervoarea religioasa, cu atat ACC-ul este mai mic, iar erorile mai putine. Studiul arata ca religia are un efect de calmare asupra credinciosilor, ceea ce ii face sa fie mai putin stresati in ceea ce priveste infruntarea necunoscutului sau a greselilor.

Sursa: Science Daily si Descopera.ro

23/04/2010 Posted by | CREDINTA | , , , , , , , , | Lasă un comentariu

   

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