1,721,262 research outputs found
Mesophasic structures in polymers. Mesophases of some poly(alkanoates) of p,p'-dihydroxy-a,a'-dimethylbenzalazine
No full textripubblicazione di Journal of Polymer Science, Polymer Letters Edition (1975), 13(8), 455-6
How we interact with objects: learning from brain lesions
No full textMotor deficits are the most common outcome of brain damage. Although a large part of such disturbances arises from loss of elementary sensorimotor functions, several syndromes cannot be explained purely on these bases. In this article, we briefly describe higher-order motor impairments, with specific attention to the characteristic ability of the human hand to interact with objects and tools. Disruption of this motor skill at several independent levels is used to outline a comprehensive model, in which various current proposals for a modular organization of hand-object interactions can be integrated. In this model, cortical mechanisms related to object interaction are independent from representations of the semantic features of objects
Mesophasic structures in polymers. Mesophases of some poly(alkanoates) of p,p'-dihydroxy-a,a'-dimethylbenzalazine
No full textripubblicazione di Journal of Polymer Science, Polymer Letters Edition (1975), 13(8), 455-6
Composizione floristica delle sugherete nel Marghine-Goceano (Sardegna centro-settentrionale)
Full text linkLa ricerca tende a definire, preliminarmente, la composizione floristica dei diversi aspetti fisionomici della sughereta (formazioni mature a bosco misto, boschi puri ben strutturati con macchia alta ad erica e citiso, garighe arborate con strato arbustivo costituito essenzialmente da cisto e lavanda, pascoli arborati) individuati in quest'area
Laterality effects on motor awareness
No full textThe ability to perceive self-produced movements and to correctly attribute an action to its proper agent is a natural task and a basic requirement to human social communication. Recent experiments suggest that this apparently simple phenomenon is related to the mechanisms of motor production, raising the question whether recognition of self-produced movement is affected by asymmetries similar to those present in motor skills. In this study, right- and left-handed subjects decided whether a moving hand presented on a screen was the image of their own hand or of that of another person. Two experimental conditions were tested: either subjects saw their own moving hand (subject condition) or they were shown the experimenter's hand pantomiming their movement (experimenter condition); a glove masked morphological differences between the two hands. Verbal responses and response times were analysed. Results showed that all subjects were more accurate in recognising their preferred hand with respect to their non-preferred hand. Right-handers responded faster than left-handers did, the latter group being especially slowed down in the experimenter condition. On the contrary, in the right-handers group, response times did not differ among conditions. The present data indicate that the ability to recognise self-generated movements is affected by motor dominance, thus suggesting that conscious knowledge of self-produced movements is closely related to the motor system
Mesomorphic behavior of organometallic polymers containing Cu(II) or Pd(II) coordinated species.
No full textLiquid crystalline properties of linear and network polymers containing allyl groups as lateral substituents.
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Rigid-chain metallomesogenic polymers containing vanadyl or copper(II) ions coordinated in the main chain.
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