The study, conducted in conjunction with Prof. Jon Driver at University College London, revealed that the perceived direction of motion from a given visual object (in this case, red bars across a screen), depends on minute variations in the timing of an accompanying sound (a sequence of beeps, for example). This provides evidence that the brain’s integration of these visual and audio cues occurs at a very early stage of processing.
Every day examples of audio-visual integration include our ability to identify who is saying what in a noisy crowd and the illusion that sound comes directly from the an actor’s lips seen on a television, rather than from the loudspeakers; the latter is the well-known ‘Ventriloquist Effect’, where seeing influences the location of sounds.
The audiovisual illusion revealed by this new research could be dubbed ‘reverse ventriloquism in motion’, as it shows that sound affects what we see. This might explain why if we watch dancing without sound, the dancers appear to have no rhythm; and why the sound of a ball hitting a racket can help us to determine the direction of the ball in a game of tennis even though the ball moves faster that the camera or eye can track.
Dr. Freeman believes that his research could have profound implications for the understanding of the neural processes that underlie multisensory perception. This knowledge could be applied in a number of industries: “The illusion could be applied to novel displays that change their appearance depending on sound, which may be of use in advertising or providing an eye-catching multisensory warning or alert in safety-critical applications. It may also eventually be useful in detecting and diagnosing subtle perceptual differences thought to be characteristic of certain clinical conditions such as dyslexia and autistic spectrum.”
Rachel Cummings | alfa
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
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At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
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Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
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UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration
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Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.
Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...
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