Questão 24751

(UFU 2014 - meio do ano)

Once more, with feeling

An artificial hand that provides sensations to its user

ONE of the few upsides of war is that it often gives technology a boost. A notable beneficiary of this is the science of prosthetic limbs. The various conflicts of the past decade have produced a steady stream of soldiers returning with missing arms and legs, and spurred efforts to improve mechanical replacements for them. As a result, modern prosthetic limbs can move around much more fluidly, and sport features such as individually controllable fingers. Artificial arms and legs have been developed that are attached to the severed nerves in an amputee’s stump, and can thus be moved the way natural limbs are, simply by thinking about it. Scientists have even made some progress in the other direction— transmitting sensory information from a prosthesis back to a user’s brain. The most impressive example so far is described in a paper in Science Translational Medicine, in which Stanisa Raspopovic of the BioRobotics Institute at the Scuola Superiore Sant’Anna, in Pisa, and his colleagues explain how they built an artificial hand that can transmit the sensation of touch back to its user’s brain.

Disponível em: http://www.economist.com/. Acesso em: 16 fev. 2014 (fragmento).

Based on the text, it is possible to state that

I. artificial limbs can now be controlled by the brain.

II. wars have financed research in the area of Biorobotics.

III. soldiers with missing arms and legs have benefited from wars.

IV. the sensation of touch is now possible for owners of artificial hands.

V. advances in prosthetic limbs are promising concerning movements of fingers.

Assinale a alternativa que contém somente afirmativas corretas.