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Extraction of color responses from visual evoked potentials using the binary kernel method

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS 1998年第1期E81D卷 124-131页

作者： Momose, K Kanagawa Inst Technol Dept Elect & Elect Engn Atsugi Kanagawa 24302 Japan

In order to investigate the nonlinearity and color responses of visual evoked potentials (VE-Ps), which have been useful in objectively detecting human color vision characteristics, a nonlinear system identification method was applied to VEPs elicited by isoluminant color stimuli, and the relationship between color stimuli and VEPs was examined. VEPs of normal subjects elicited by chromatically modulated stimuli were measured, and their binary kernels were estimated. Results showed that a system with chromatically modulated stimuli and VEP responses can be expressed by binary kernels up to the second order and that first-and second-order binary kernels depended on the color of the stimulus. The characteristics of second-order kernels reflected the difference between two chromatic channels. Opponent-color responses were included in first-order binary kernels, suggesting that they could be used as an index to test human color vision.

关键词： VEP binary kernel pseudorandom binary sequence human color vision opponent-color response

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binary kernels of VEPs elicited by luminance-modulated stimuli

Binary kernels of VEPs elicited by luminance-modulated stimu...

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18th Annual International Conference of IEEE Engineering-in-Medicine-amd-Biology-Society

作者： Momose, K Komiya, K Uchiyama, A Kanagawa Inst Technol Dept Elect & Elect Engn Atsugi Kanagawa 24302 Japan

ISBN: (纸本)0780338111

In order to investigate the characteristics of luminance channels in the human color visual system, the binary kernel method was applied to VEPs elicited by luminance-modulated stimuli of constant chromaticity. binary kernels of VEPs measured from normal subjects were estimated and the relationship between the waveforms of kernels and stimuli was examined. Results showed that the waveforms of kernels were independent of the chromaticity of stimuli, and that they reflected the characteristics of the luminance channel. Since binary kernels up to the 3rd order were typical. the luminance-VEP system can be described by a 3rd-order nonlinear system. Waveforms of Ist-and 2nd-order kernels depended on the mean luminance and contrast of the stimulus, and the amplitudes of 3rd-order kernels increased according to contrast.

关键词： VEP binary kernel luminance color vision

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Relationship between the binary kernels of visually evoked potentials and the visual responses on the magnocellular and parvocellular pathways

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METHODS OF INFORMATION IN MEDICINE 2007年第2期46卷 169-173页

作者： Momose, K. Waseda Univ Fac Human Sci Tokorozawa Saitama 3591192 Japan

Objectives: To investigate the nonlinear characteristics of visual evoked potentials (VEPs), and their correlation with the visual responses on parvocellular and magno-cellular pathways. First and second-order kernels of the VEPs elicited by several checkerboard patterns were estimated, and their relations to the visual pathway responses were investigated. Methods: VIPs elicited by checkerboard pattern (0.5, 1.0, 2.0 and 4.0 c/d) alternating based on pseudorandom binary sequence were measured, and their binary kernels were calculated. First and second-order binary kernels were compared with amplitudes of the steady-state VIPs (S-VEPs) to pattern reversal stimulation with a constant temporal frequency (4, 8,12,16, and 32 Hz). Results: Positive peak latencies at 150 ms (P150) of second-order first and second slices were correlated with S-VEP amplitude for higher temporal frequencies, indicating that the first and second slices reflect the response of the magnocellular. However, for second and third slices, their amplitudes were partially correlated with 4-16 Hz S-VEP, and this indicated that the second slice contains both magno- and parvo-cellular pathway responses. P150 latencies of third slices were correlated with S-VEP for lower temporal frequencies, indicating that third slice reflects the response of the parvocellular pathway. Conclusions: The lower slices of second-order binary kernels reflect the response of the magnocellular pathway and the higher slices reflect those on the parvocellular pathway in the human visual system of VIPs.

关键词： visually evoked potentials PRBS binary kernel visual pathway magnocellular parvocellular

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Characteristics of first and second order kernels of Visually Evoked Potentials elicited by pseudorandom stimulation

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DOCUMENTA OPHTHALMOLOGICA 2004年第2期108卷 157-163页

作者： Nemoto, N Momose, K Kiyosawa, M Mori, H Mochizuki, M Tokyo Med & Dent Univ Grad Sch Dept Ophthalmol & Visual Sci Tokyo Japan Kanagawa Inst Technol Dept Network Engn Kanagawa Japan

The characteristics of the first and the second order kernels of the visually evoked potentials (VEPs) elicited by pseudorandom binary sequence (PRBS) stimuli were investigated. VEPs were recorded from six eyes of four normal volunteers. The effects of stimulus luminance on the latency and amplitude of the first and the second order kernels were determined. The temporal interactions of transient VEPs elicited by single and double pulse stimuli were compared with the first and the second order kernels of the PRBS-VEPs. The correlation coefficient between the logarithm of the stimuli luminance (log I) and VEP amplitude of the first order kernels was 0.45 (p<0.05), and that between log I and P1 latency was -0.62(p<0.005). The second order kernels were not equal to the temporal interactions of the responses. However, the latency of the negative peak of the fourth slice was similar to the temporal interaction to double pulse stimulation with an inter-stimulus interval of 40 ms. An inhibitory component at 40 ms following the first stimulus was detected in the analysis of both PRBS-VEPs second order kernel and transient VEPs. This function may help to increase the frequency of critical flicker fusion in normal subjects.

关键词： binary kernel luminance nonlinearity pseudorandom binary sequence visually evoked potential

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Nonlinear analysis of visual evoked potentials elicited by color stimulation

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METHODS OF INFORMATION IN MEDICINE 1997年第4-5期36卷 315-318页

作者： Momose, K Komiya, K Uchiyama, A Kanagawa Inst Technol Dept Elect & Elect Engn Atsugi Kanagawa 24302 Japan Waseda Univ Sch Sci & Engn Shinjuku Ku Tokyo 169 Japan

The relationship between chromatically modulated stimuli and visual evoked potentials (VEPs) was considered. VEPs of normal subjects elicited by chromatically modulated stimuli were measured under several color adaptations, and their binary kernels were estimated, Up to the second-order, binary kernels obtained from VEPs were so characteristic that the VEP-chromatic modulation system showed second-order nonlinearity, First-order binary kernels depended on the color of the stimulus and adaptation, whereas second-order kernels showed almost no difference, This result indicates that the waveforms of first-order binary kernels reflect perceived color (hue), This supports the suggestion that kernels of VEPs include color responses, and could be used as a probe with which to examine the color visual system.

关键词： VEP color response color adaptation binary kernel

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Nonlinear characteristics of visual evoked potential and their correlation with the visual responses on magnocellular and parvocellular pathways

Nonlinear characteristics of visual evoked potential and the...

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25th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society

作者： Momose, K Kasahara, S Kanazawa Inst Technol Dept Network Engn Kanagawa Japan

ISBN: (纸本)0780377893

Purpose was to investigate the nonlinear characteristics of visual evoked potentials (VEPs), and their correlation with the visual responses on parvocellular and magnocellular pathways. The VEPs elicited by checkerboard pattern alternating based on pseudorandom binary sequence were measured, and their nonlinear parameters (binary kernels) were calculated. VEPs to checkerboard with 0.5, 1.0, 2.0 and 4.0 [c/d] were measured. First and second-order binary kernels were compared with steadystate VEPs (S-VEPs) to pattern reversal stimulation with a constant temporal frequency (4, 8, 12, 16, and 32 Hz). Positive peak latency at 150 ms of second-order first slice was correlated with SNEP amplitude for 32 Hz (r = -0.71). Amplitudes of second slice were well correlated with S-VEPs to 4, 8,12, and 16 Hz stimuli (r = 0.629 0.77, 0.61, and 0.72). These results support the previously reported observations that the first and second slice response functions reflect the response of the parvocellular and magnocellular pathways, respectively.

关键词： VEP pseudorandom binary sequence binary kernel magnocellular parvocellular temporal frequency spatial frequency

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Measurement of human color responses using visual evoked potential elicited by multi-color stimulation

Measurement of human color responses using visual evoked pot...

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23rd Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society

作者： Momose, K Hanagata, J Kanagawa Inst Technol Dept Network Engn Kanagawa Japan

ISBN: (纸本)0780372115

The simultaneous presentation of two color stimuli was used to determine whether a practical and rapid method of recording human color responses using visual evoked potentials (VEPs) can be done. Multi-color stimulation which consists of two iso-luminant color stimuli presented with a pseudorandom binary sequence (PRBS) were employed to elicit VEPs, and the first-order binary kernel of the VEPs was calculated using multi-input system analysis technique. The waveforms of the kernels elicited by the two color presentations were similar to those obtained by one color stimulation. This indicated that the simultaneous presentation of two color stimulation is effective in detecting color responses. However, the amplitudes of the kernels obtained by the two color stimulation method were different from those by one color stimulation. This may be because the effect of one color stimulus was weakened by the presence of the other color stimulus.

关键词： VEP pseudorandom binary sequence color vision color stimulation binary kernel

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