Rome, April 21 (Reuters) - identified in the brain, 'puppet' which cleverly moves the body, and the areas that 'light' in the spatial perception of body , namely those parts that allow us to place our body in space is that that of other people. The discovery, published in the Journal of Neuroscience, and 'a collaboration between the International School for Advanced Studies (ISAS) in Trieste, the Institute for accommodation and care of a scientific' E. Medea 'of San Vito al Tagliamento (Pn) and the Institute of Neuroscience and Medicine of Julich in Germany. The research findings, the researchers said, could have interesting implications in various fields: from rehabilitation robotics.
The study, by means of neuroimaging techniques, showed that such activities are secondary somatosensory cortex and the posterior intraparietal sulcus, two areas which we know very little. But while the intraparietal sulcus and 'more results' times to be involved in different activities' brain, the secondary somatosensory cortex is a news' absolute.
"All the information so far available on this brain region - said Corrado Corradi Dell'Acqua, a neuroscientist at Sissa, who signed the search - they saw involved in the development of tactile features, such as those obtained through the manipulation of objects and involving more 'body parts, such as two different hands or fingers of the same hand. "
"It 's obvious - go to the expert - who, to put together this information in a meaningful way, the secondary somatosensory cortex must know the position that the various parts of the body have to each other. No, pero' , yet was still able to tie that knowledge to this area. "
Using magnetic resonance imaging, neuroscientists have thus' noted that the secondary somatosensory cortex was activated in the absence of tactile stimuli, when the test subjects gave judgments related to the position space of the body, a dimension that allows the brain to understand the placement of a body part than the rest.
"We borrowed from experimental psychology paradigms of mental rotation and we have used in an experiment, which saw involved 20 people and right-handed male - says Corradi Dell'Acqua - we asked them, after showing him the photo of a hand, to tell us if it were the right or the left and then we measured the brain response. In this way we were able to identify two areas involved. "
Source: http://www.adnkronos.com
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