English scientists have found out what human brain frames are charged with building of the most ancient technology in mankind history - stone stratifying on acute thin plates. This technology is about two and a half one million years. Dietrich Stout from Archeology Institute (London University College) and Terry Shaminad from neurology Institute (London University College) have decided to find out what cerebral frames are responsible for technology of stone breakdown on acute plates. This technology iss the most ancient, it becomes perceptible from the Oldovansky formation (it is named so in place Olduvay Jordj in Tanzania). The most ancient found human-made stone instrument - pointed stne plate received by impact of one stone on another. During this industrial technology, the ancient person cliped a serious stne three dactyls of the leading arm (between big, forefinger and an average), and struck it on other stone cliped in a palm of other arm, beating out their this stone acute plates.
Scientists from London have made the experiments on young volunteers (20-30 years old) who replicated this ancient technics. As the control used people feasant similar wave locomotions by arms, but without effecting of acute stone plates. Researches in public spent in compliance with the Helsinki Declaration under human rights from the written approval of examinees. The experimental introduced radioactive labelled deoxyglucose on which detection by means of PeT-skana it was possible to judge metabolism activation of brain certain sections. Neuropsychologics expected that the same frames of a brain will be involved in this primitive effecting as at the monkeys using subjects - ranges dorsal and ventral premotoring cortex, and a rostral part interparietal sulcuses. Besides, scientists expected activity in a cerebellum - this brain sections are responsible for movements coordination. To some surprise, scientists have found that manufacturing of acute stone plates in compliance with Oldovansky technics, demands activization of neurones of parieto-face-to-face sensomotor system, switching on those recently open regions which are responsible for three-dimensional orientation and locomotion. Scientists come to conclusion what exactly unique sensomotor adaptic human system, even in larger degree, than its ability to planning and abstract thinking, was pledge of technological progress of a human civilisation. news location: scientific news in the world. Articles is about: English Scientists, helth life. News sorce: Stout D, Chaminade T. The evolutionary neuroscience of tool making. Neuropsychologia. 2007 Mar 14; 45 (5):1091-100 |