NeuroPhone: Brain-Mobile Phone Interface using a Wireless EEG Headset

Neural signals are everywhere just like mobile phones. We propose to use neural signals to control mobile phones for hands-free, silent and effortless human-mobile interaction. Until recently, devices for detecting neural signals have been costly, bulky and fragile. We present the design, implementation and evaluation of the NeuroPhone system, which allows neural signals to drive mobile phone applications on the iPhone using cheap off-the-shelf wireless electroencephalography (EEG) headsets. We demonstrate a mind-controlled address book dialing app, which works on similar principles to P300-speller brain-computer interfaces: the phone flashes a sequence of photos of contacts from the address book and a P300 brain potential is elicited when the flashed photo matches the person whom the user wishes to dial. EEG signals from the headset are transmitted wirelessly to an iPhone, which natively runs a lightweight classifier to discriminate P300 signals from noise. When a person\u27s contact-photo triggers a P300, his/her phone number is automatically dialed. NeuroPhone breaks new ground as a brain-mobile phone interface for ubiquitous pervasive computing. We discuss the challenges in making our initial prototype more practical, robust, and reliable as part of our on-going research

A trigonometric approach to quaternary code designs with application to one-eighth and one-sixteenth fractions

The study of good nonregular fractional factorial designs has received significant attention over the last two decades. Recent research indicates that designs constructed from quaternary codes (QC) are very promising in this regard. The present paper shows how a trigonometric approach can facilitate a systematic understanding of such QC designs and lead to new theoretical results covering hitherto unexplored situations. We focus attention on one-eighth and one-sixteenth fractions of two-level factorials and show that optimal QC designs often have larger generalized resolution and projectivity than comparable regular designs. Moreover, some of these designs are found to have maximum projectivity among all designs.Comment: Published in at http://dx.doi.org/10.1214/10-AOS815 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org

Fluoride poisoning and the effect on collagen biosynthesis of osseus and non-osseus tissues of rabbit

Fluoride poisoning Is known to cause a debilitating condition clinically referred to as Fluorlsls. The present Investigation on the experimental animal model has been carried out to collect Information on the precise nature of fluoride action, with special reference to collagen biosynthesis. Rabbits subjected to Fluoride poisoning for varying time Intervals were administered with carbon labelled proline. Both osseus and non-osseus tissues were analyzed to measure the rate of Incorporation of labelled proline, and Index for collagen biosynthesis. Part I of the article is dealing with 14C proline uptake by Hydrolyzed collagen (obtained by centrifugation at 5000 × g) and residual protein of tissues viz: Bone, Tendon, Muscle, Kidney cortex, Skin, Lung, Pinna and Trachea. Part II of the article Is dealing with 14C proline uptake by different fraction of collagen Viz: collagenase digested fraction and separated by centrifugation at 9000 × g ; native collagen fibril, acid soluble collagen, alkali soluble collagen and non-collagenous protein. The results obtained In Part I, suggest that In Fluoride poisoning collagen biosynthesis has been greatly impaired both In osseus and non-ossues tissues. This has been further confirmed by the results obtained in Part II of the investigation

Many-body localized phase of bosonic dipoles in a tilted optical lattice

We chart out the ground state phase diagram and demonstrate the presence of a many-body localized (MBL) phase for an experimentally realizable one-dimensional (1D) constrained dipole boson model in the presence of an Aubry-Andre (AA) potential whose strength $\lambda_0$ can be tuned to precipitate an ergodic-MBL transition. We discuss the signature of such a transition in the quantum dynamics of the model by computing its response subsequent to a sudden quench of $\lambda_0$. We show that the MBL and the ergodic phases can be clearly distinguished by study of post-quench dynamics and provide an estimate for minimal time up to which experiments need to track the response of the system to confirm the onset of the MBL phase. We suggest experiments which can test our theory.Comment: v2, 4+3 pages, 4+3 figs; more comments on experiment