Positive Technology Journal

Yet another nice video about AR

Via Leandeer

This great video by Keiichi Matsuda shows how augmented reality "may recontextualise the functions of consumerism and architecture, and change in the way in which we operate within it". The scenario is also interesting because it suggests how AR may be (ab)used by commercial companies. On the other hand, it is difficult to imagine how AR could go mainstream without them... of course any suggestion is welcome.

Augmented (hyper)Reality: Domestic Robocop from Keiichi Matsuda on Vimeo.

From the press release:

The National Library of Medicine's Mobile Medline Plus builds on the NLM's MedlinePlus Internet service, which provides authoritative consumer health information to over 10 million visitors per month. These visitors access MedlinePlus (http://medlineplus.gov) from throughout the United States as well many other countries, and use desktop computers, laptops and even mobile devices to get there.

Mobile MedlinePlus is available in English and Spanish (http://m.medlineplus.gov/spanish) and includes a subset of content from the full Web site. It includes summaries for over 800 diseases, wellness topics, the latest health news, an illustrated medical encyclopedia, and information on prescription and over-the-counter medications.

Mobile MedlinePlus can also help you when you're trying to choose an over-the-counter cold medicine at the drug store.

And if you're traveling abroad, you can use Mobile MedlinePlus to learn about safe drinking water.

The exploration of meditation in the neuroscience of attention and consciousness.

Cogn Process. 2009 Dec 30;

Authors: Raffone A, Srinivasan N

Many recent behavioral and neuroscientific studies have revealed the importance of investigating meditation states and traits to achieve an increased understanding of cognitive and affective neuroplasticity, attention and self-awareness, as well as for their increasingly recognized clinical relevance. The investigation of states and traits related to meditation has especially pronounced implications for the neuroscience of attention, consciousness, self-awareness, empathy and theory of mind. In this article we present the main features of meditation-based mental training and characterize the current scientific approach to meditation states and traits with special reference to attention and consciousness, in light of the articles contributed to this issue.

Via Chris Jablonski's blog

Researchers at the Massachusetts Institute of Technology have created a working prototype of a bidirectional LCD (captures and displays images) that allows a viewer to control on-screen objects without the need for any peripheral controllers or even touching the screen. In near Minority Report fashion, interaction is possible with just a wave of the hand.

The BiDi is inspired by emerging LCDs that use embedded optical sensors to detect multiple points of contact and exploits the spatial light modulation capability of LCDs to allow lensless imaging without interfering with display functionality. According to MIT researchers, this technology can lead to a wide range of applications, such as in-air gesture control of everything from CE devices like mobile phones to flat-panel TVs.

BiDi Screen, 3D gesture interaction in thin screen device from Matt Hirsch on Vimeo.

Via MilTech

Nanotechnology researchers in France have developed a hybrid transistor called NOMFET (Nanoparticle Organic Memory Field-Effect Transistor) that shows the main behavior of a biological spiking synapse and can lead to a new generation of neuro-inspired computers, capable of responding in a manner similar to the nervous system. The organic device is made of a molecule called pentacene (an organic semiconductor) and gold nano-particles.

“Basically, we have demonstrated that electric charges flowing through a mixture of an organic semiconductor and metallic nanoparticles can behave the same way as neurotransmitters through a synaptic connection in the brain,” Dominique Vuillaume, a research director at CNRS and head of the Molecular Nanostructures & Devices group at the Institute for Electronics Microelectronics and Nanotechnology (IEMN) tells Nanowerk.

The study is published in the 22 January 2010 issue of the journal Advanced Functional Materials, and can be accessed on Scribd.

Credit: Mil-Tech.com

Evidence for grid cells in a human memory network.

Nature. 2010 Jan 20;

Authors: Doeller CF, Barry C, Burgess N

Grid cells in the entorhinal cortex of freely moving rats provide a strikingly periodic representation of self-location which is indicative of very specific computational mechanisms. However, the existence of grid cells in humans and their distribution throughout the brain are unknown. Here we show that the preferred firing directions of directionally modulated grid cells in rat entorhinal cortex are aligned with the grids, and that the spatial organization of grid-cell firing is more strongly apparent at faster than slower running speeds. Because the grids are also aligned with each other, we predicted a macroscopic signal visible to functional magnetic resonance imaging (fMRI) in humans. We then looked for this signal as participants explored a virtual reality environment, mimicking the rats' foraging task: fMRI activation and adaptation showing a speed-modulated six-fold rotational symmetry in running direction. The signal was found in a network of entorhinal/subicular, posterior and medial parietal, lateral temporal and medial prefrontal areas. The effect was strongest in right entorhinal cortex, and the coherence of the directional signal across entorhinal cortex correlated with spatial memory performance. Our study illustrates the potential power of combining single-unit electrophysiology with fMRI in systems neuroscience. Our results provide evidence for grid-cell-like representations in humans, and implicate a specific type of neural representation in a network of regions which supports spatial cognition and also autobiographical memory.