Title :
Visual evoked responses via linear frequency-modulated stimulation
Author :
Schellhorn, K. ; Henning, G. ; Hoenecke, O. ; Husar, P.
Author_Institution :
Inst. fur Biomed. Tech. und Inf., Tech. Hochschule Ilmenau, Germany
fDate :
30 Oct-2 Nov 1997
Abstract :
The knowledge of the properties of an EEG signal related to a visual stimulus is of fundamental importance for reliable signal detection. The procedure described in this paper is based on a local stimulation of the retina by a linear frequency-modulated on-off sequence. The resulting deterministic response is analyzed by means of the Wood-Barry (1994) algorithm for the detection of linear frequency-modulated signals using the Radon-Wigner transform. Perimetric measurements are carried out up to an eccentricity of 30
Keywords :
Radon transforms; electroretinography; frequency modulation; medical signal detection; medical signal processing; visual evoked potentials; EEG signal properties; Radon-Wigner transform; Wood-Barry algorithm; deterministic response; eccentricity; linear frequency-modulated on-off sequence; linear frequency-modulated stimulation; ophthalmology; perimetric measurements; reliable signal detection; retina local stimulation; signal processing; time-frequency analysis; visual evoked potentials; visual evoked responses; visual stimulus; Biomedical measurements; Chirp modulation; Electroencephalography; Retina; Shape measurement; Signal processing; Signal processing algorithms; Signal to noise ratio; Steady-state; Time frequency analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-4262-3
DOI :
10.1109/IEMBS.1997.756996
