Institutions | About Us | Help | Gaeilge
rian logo


Mark
Go Back
A Spectrum of Colors: Investigating the Temporal Frequency Characteristics of the Human Visual System Using a System Identification Approach
Lalor, Edmund C.; Reilly, Richard B.; Pearlmutter, Barak A.; Foxe, John J.
Noise input signals are commonly used in both linear and nonlinear system identification of physiological systems. This method can be applied to electrophysiological analysis of the human visual system by controlling the modulation of the contrast of a checkerboard stimulus using a pre-computed noise waveform. In this study we describe how one can obtain an estimate of the linear impulse response of the visual system using noise waveforms. Furthermore, we examine the impulse responses obtained using noise signals with different frequency characteristics, in an attempt to investigate the temporal frequency characteristics of the human visual system. We show that noise signals with frequency content greater than 15 Hz are more effective at evoking these responses than those with little or no power at high frequencies.
Keyword(s): Hamilton Institute; Computer Science; checkerboard stimulus; color spectrum; electrophysiological analysis; human visual system; linear impulse response; noise input signal; noise waveform; physiological system; system identification; temporal frequency characteristics; colour vision; transient response; visual evoked potentials;
Publication Date:
2006
Type: Journal article
Peer-Reviewed: Yes
Institution: Maynooth University
Citation(s): Lalor, Edmund C. and Reilly, Richard B. and Pearlmutter, Barak A. and Foxe, John J. (2006) A Spectrum of Colors: Investigating the Temporal Frequency Characteristics of the Human Visual System Using a System Identification Approach. Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE . pp. 3720-3723. ISSN 1557-170X
Publisher(s): Institute of Electrical and Electronics Engineers (IEEE)
File Format(s): application/pdf
Related Link(s): http://mural.maynoothuniversity.ie/2048/1/BP_spectrum-colors-vespa.pdf
First Indexed: 2020-01-31 06:05:10 Last Updated: 2020-04-02 07:39:28