Un nou studiu poate oferi o explicatie celor care au incercat vreodata sa se gandile singuri si nu au reusit. Se pare ca pur si simplu nu suntem facuti sa putem face asta. In mod surprinzator, acelasi studiu ar putea constitui o explicatie pentru rapiditatea cu care o mica cearta din curtea de joaca se transforma intr-o bataie in toata regula, fiecare dintre participanti sustinand ca a fost lovit mai tare decat a lovit el insusi. Un raport publicat de revista ,,Science,, arata cum creierul reduce intensitatea efectelor actiunii noastre, ceea ce inseamna ca ne subestimam propria forta fizica si cantitatea de forta pe care o folosim asupra altora, relateaza Mediafax. In cadrul studiului, cercetatorii au folosit sase perechi de adulti care sa interactioneze fizic unii cu altii. Participantilor li s-a cerut sa-si apese unul altuia degetele cu aceeasi presiune care s-a folosit asupra propriilor degete. In loc insa ca valorile sa ramana constante, asa cum ar fi fost de asteptat, acestea au urcat rapid. Potrivit cercetatorilor, atunci cand creierul planuieste o miscare corporala, prelucreaza o senzatie preexistenta a acelei miscari pentru a-i permite sa inregistreze alte senzatii venite din exteriorul corpului. Potrivit experimentelor, atunci cand o persoana exercita o forta asupra sa, perceptia fortei este redusa cu aproape 50%. ,,Rezultatele au aratat ca pentru a avea aceeasi senzatie de forta, este nevoie sa exerciti o forta de o intensitate mai mare. In concluzie, daca aplici forta pe propria persoana apasand cu un deget, ai senzatia ca apesi mai putin decat daca ai apasa pe o masina,,, spune cercetatorul Sukhwinder S. Shergill, de la Institutul de Neurologie din cadrul Colegiului Universitar din Londra. ,,Se stia despre existenta unui mecanism in creier care reduce efectul propriilor noastre actiuni, dar aceasta nu fusese niciodata masurata. Acest mecanism explica si de ce nu putem gadila singuri: creierul stie deja la ce senzatie sa se astepte si modifica in functie de acest lucru activitatea cerebrala responsabila de reactie,,, spune Shergill. ,,Dar cand altcineva ne gadila, creierul nu are timp sa ajusteze perceptia, asa ca simtim efectele la intensitatea reala,,, adauga el.
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