Comparison of an open-hardware electroencephalography amplifier with medical grade device in brain-computer interface applications

Brain-computer interfaces (BCI) are promising communication devices between humans and machines. BCI based on non-invasive neuroimaging techniques such as electroencephalography (EEG) have many applications , however the dissemination of the technology is limited, in part because of the price of the hardware. In this paper we compare side by side two EEG amplifiers, the consumer grade OpenBCI and the medical grade g.tec g.USBamp. For this purpose, we employed an original montage, based on the simultaneous recording of the same set of electrodes. Two set of recordings were performed. During the first experiment a simple adapter with a direct connection between the amplifiers and the electrodes was used. Then, in a second experiment, we attempted to discard any possible interference that one amplifier could cause to the other by adding "ideal" diodes to the adapter. Both spectral and temporal features were tested -- the former with a workload monitoring task, the latter with an visual P300 speller task. Overall, the results suggest that the OpenBCI board -- or a similar solution based on the Texas Instrument ADS1299 chip -- could be an effective alternative to traditional EEG devices. Even though a medical grade equipment still outperforms the OpenBCI, the latter gives very close EEG readings, resulting in practice in a classification accuracy that may be suitable for popularizing BCI uses.Comment: PhyCS - International Conference on Physiological Computing Systems, Jul 2016, Lisbon, Portugal. SCITEPRESS, 201

The quotidian mysteries: laundry, liturgy, and \u27women\u27s work\u27

Norris, Kathleen. The quotidian mysteries: laundry, liturgy, and women\u27s work . New York: Paulist Press, 1998

About the whereabouts of indefinites

The paper characterizes three different domains in the German middle field which are relevant for the interpretation of an indefinite. It is argued that the so-called 'strong' reading of an indefinite is the basic one and that the 'weak' reading needs special licensing which is mirrored by certain syntactic requirements. Some popular claims about the relation between the position and the interpretation of indefinites as well as some claims about scrambling are discussed and rejected. From the findings also follows that the strong reading of an indefinite is independent of its information status

Realizability Toposes from Specifications

We investigate a framework of Krivine realizability with I/O effects, and present a method of associating realizability models to specifications on the I/O behavior of processes, by using adequate interpretations of the central concepts of `pole' and `proof-like term'. This method does in particular allow to associate realizability models to computable functions. Following recent work of Streicher and others we show how these models give rise to triposes and toposes

Comb-e-Chem: an e-science research project

The background to the Comb-e-Chem e-Science pilot project funded under the UK-Science Programme is presented and the areas being addresses within chemistry and more specifically combinatorial chemistry are discussed. The ways in which the ideas underlying the application of computer technology can improve the production, analysis and dissemination of chemical information and knowledge in a collaborative environment are discussed

Cruise Report 64-S-3 - Albacore

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Notes on SU(3) Structures in Type IIB Supergravity

We study solutions of type IIB supergravity with an SU(3) structure group and four dimensional Poincare invariance and present relations among the bosonic fields which follow from the supersymmetry variations. We make explicit some results which also follow from the more general case of an SU(2) structure and give some short comments applicable to general supersymmetric solutions. We also provide simplified relations appropriate for duals of gauge theory renormalization group flows, and use these to derive the supergravity solution for a bound state of (p,q)5-branes and D3-branes.Comment: 14p, JHEP3.cls, v2 typos corrected, refs adde