Synthesis of large-area germanium cone-arrays for application in electron field emission
High-vacuum electron-beam evaporation was used to synthesize germanium (Ge) cone-arrays on N+-type (100) Si. The surface morphology of Ti nanocrystals' catalyst and Ge cone-arrays was investigated by ...
High-vacuum electron-beam evaporation was used to synthesize germanium (Ge) cone-arrays on N+-type (100) Si. The surface morphology of Ti nanocrystals' catalyst and Ge cone-arrays was investigated by ...
Differential x-ray phase contrast imaging using a shearing interferometer
An x-ray interferometer has been developed that uses two transmission phase gratings to analyze wave front distortions in the hard x-ray range. The interferometer is insensitive to mechanical drift an...
An x-ray interferometer has been developed that uses two transmission phase gratings to analyze wave front distortions in the hard x-ray range. The interferometer is insensitive to mechanical drift an...
Remote detection of human electroencephalograms using ultrahigh input impedance electric potential sensors
Appl. Phys. Lett. 81, 3284 (2002); doi:10.1063/1.1516861
Issue Date: 21 October 2002
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In this letter, we demonstrate the use of very high performance, ultrahigh impedance, electric potential probes in the detection of electrical activity in the brain. We show that these sensors, requiring no electrical or physical contact with the body, can be used to monitor the human electroencephalogram (EEG) revealing, as examples, the 
and 
rhythms and the blocking phenomenon. We suggest that the advantages offered by these sensors compared with the currently used contact (Ag/AgCl) electrodes may act to stimulate new developments in multichannel EEG monitoring and in real-time electrical imaging of the brain. ©2002 American Institute of Physics.
and rhythms and the blocking phenomenon. We suggest that the advantages offered by these sensors compared with the currently used contact (Ag/AgCl) electrodes may act to stimulate new developments in multichannel EEG monitoring and in real-time electrical imaging of the brain. ©2002 American Institute of Physics.
| History: | Received 29 July 2002; accepted 4 September 2002 |
| Permalink: |
http://link.aip.org/link/?APPLAB/81/3284/1 |
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BibSonomy
KEYWORDS and PACS
- 87.19.Nn
Biological and medical physics Properties of higher organisms Electrophysiology - 87.80.Tq
Biological and medical physics Biological techniques and instrumentation; biomedical engineering Biological signal processing and instrumentation - 87.17.Nn
Biological and medical physics Cellular structure and processes Electrophysiology of nerve cells - YEAR: 2002
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0003-6951 (print)
1077-3118 (online)
AIP
REFERENCES (9)
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- H. Berger, Arch. F. Psychiat. 87, (1929);
- see also Hans Berger on the Electroencephalogram of Man., edited by Pierre Gloor (Elsevier, Amsterdam, 1969).
- B. J. Fisch, Spehlmann's EEG Primer (Elsevier, Amsterdam, 1991).
- Medical Instrumentation—Application and Design, edited by J. G. Webster (Wiley, New York, 1988).
- M. Hoke, in SQUID Based Measurement Techniques in the Art of Measurement, edited by B. Kramer (VCH, Braunschweig, 1988).
- R. J. Prance, A. Debray, T. D. Clark, H. Prance, M. Nock, C. J. Harland, and A. J. Clippingdale,
Meas. Sci. Technol. 11, 1 (2000) . - C. J. Harland, T. D. Clark, and R. J. Prance,
Meas. Sci. Technol. 13, 163 (2002) . - J. Malmivuo and R. Plonsey, Electroencephalography in Biomagnetism—Principles and Applications of Bioelectric and Biomagnetic Fields (Oxford University Press, Oxford, 1995).
- A. C. Guyton, Structure and Function of the Nervous System (Saunders Philadelphia, 1976).
- S. Qian and D. Chen, Joint Time-Frequency Analysis (Prentice-Hall, Englewood Cliffs, N.J., 1996).
