Topographical study of stereo-related potentials

Yanashima, Kenji; Miwa, Munefumi; Akeo, Youko; Kawara, Tetsuo

doi:10.1007/bf00162717

Cited by 7 publications

(8 citation statements)

References 8 publications

(3 reference statements)

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“…The reported results consist of studies that obtained monophasic (Regan and Spekreijse 1970;Julesz et al 1980;Julesz and Kropfl 1982;Oguchi and Mashima 1989), biphasic (Regan and Beverley 1973;Fukai 1985;Fenelon et al 1986;Skrandies 1987;Chao et al 1988;Manning et al 1992;Janssen et al 1999) and triphasic (Mol and Caberg 1977;Herpers et al 1981;Yanashima et al 1987) waveforms. Besides the results in which the peaks are localized within a time interval of 100-200 ms (Regan and Spekreijse 1970;Fukai 1985;Skrandies 1987;Yanashima et al 1987;Oguchi and Mashima 1989), there are also results that consist of peaks within a wide 100-to 600-ms time window (Mol and Caberg 1977). The most prominent peak common to most of the studies is a negative peak with latency in the 200-400-ms window (Regan and Beverley 1973;Fenelon et al 1986;Chao et al 1988;Manning et al 1992;Janssen et al 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Three of them (Regan and Beverley 1973;Fenelon et al 1986;Manning et al 1992) also used divergent disparities together with the convergent disparities. Some research has investigated the change of the amplitude of the peaks with the degree of disparity (Fiorentini and Maffei 1970;Regan and Spekreijse 1970;Regan and Beverley 1973;Norcia et al 1985;Teping and Silny 1987;Yanashima et al 1987;Chao et al 1988;Skrandies 1997;Janssen et al 1999). With one exception (Fiorentini and Maffei 1970), all of them used RDS or DRDS stimuli.…”

Section: Introductionmentioning

confidence: 99%

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Depth-related visually evoked potentials by dynamic random-dot stereograms in humans: negative correlation between the peaks elicited by convergent and divergent disparities

Sahinoglu

2004

European Journal of Applied Physiology

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Binocular visually evoked potentials (VEP) were recorded from the left and right occipital cortices of right-handed subjects in response to convergent and divergent stimuli, each having six disparity levels, using dynamic random-dot stereograms (DRDS). The VEP recorded consisted of a negative peak (N300) and a positive peak (P500) within intervals of 200-400 ms and 400-600 ms, respectively, with respect to the stimulus onset. For convergent disparities, the relationships between the amplitude of N300 and the degree of disparity showed convexity towards the disparity axis, whereas the same relationships displayed concavity for P500. For divergent disparities, on the other hand, the amplitude and the degree of disparity relationships showed concavity towards the disparity axis for N300, in contrast to those obtained by convergent disparities. Although the disparity profile of P500 displayed concavity in the left hemisphere, its right hemisphere counterpart turned out to be bi-modal in behaviour, indicating a relative loss of disparity sensitivity in the mid-disparity range. The significant negative correlation between the N300 and P500 behaviour in response to both stimulus modalities suggests that the activity of the N300 centre is effective in changing the synchronization level of the cell population comprising the P500 centre. The significant negative correlations between the profiles of the N300 wave in response to convergent DRDS and its divergent DRDS counterpart in both hemispheres, and between the profiles of the convergent and divergent P500 waves in the left hemisphere imply that the N300 and the P500 foci are sensitive to both the magnitude and the direction of the disparity. The latency differences between the two response modalities revealed that the N300 wave in response to convergent DRDS always led the N300 wave elicited by divergent DRDS, indicating that convergent disparities are processed faster than the divergent disparities.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Depth-related visually evoked potentials by dynamic random-dot stereograms in humans: negative correlation between the peaks elicited by convergent and divergent disparities

Sahinoglu

2004

European Journal of Applied Physiology

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“…Teping and Silny (1987) examined the change of the peak-to-peak amplitudes of the VEP for eight disparity values ranging from 3¢ to 69¢ and obtained a similar result but did not give any graph. Yanashima et al (1987), too, reported that the VEP amplitudes passed through the maximum in mid-disparities within the 2.58¢-18.05¢ range, but they did not present their results in graphical form either.…”

Section: Discussionmentioning

confidence: 93%

“…The results reported consist of studies that obtained monophasic (Regan and Spekreijse 1970;Julesz et al 1980;Julesz and Kropfl 1982;Oguchi and Mashima 1989), biphasic (Regan and Beverley 1973;Fukai 1985;Fenelon et al 1986;Skrandies 1987;Chao et al 1988;Manning et al 1992;Janssen et al 1999) and triphasic (Mol and Caberg 1977;Herpers et al 1981;Yanashima et al 1987) waveforms. Besides the results in which the peaks are localized within a 100-200 ms interval (Regan and Spekreijse 1970;Fukai 1985;Skrandies 1987;Yanashima et al 1987;Oguchi and Mashima 1989), there are also results that consist of peaks within a wide 100-600 ms window (Mol and Caberg 1977). The most prominent peak, that is common to most of the studies, is a negative peak with a latency in the 200-400 ms window (Regan and Beverley 1973;Fenelon et al 1986;Chao et al 1988;Manning et al 1992;Janssen et al 1999).…”

Section: Introductionmentioning

confidence: 99%

“…There are researches that have investigated the change of the amplitude of the peaks with the degree of disparity (Fiorentini and Maffei 1970;Regan and Spekreijse 1970;Regan and Beverley 1973;Norcia et al 1985;Teping and Silny 1987;Yanashima et al 1987;Chao et al 1988;Skrandies 1997;Janssen et al 1999). With one exception (Fiorentini and Maffei 1970), all of them used RDS or DRDS stimuli.…”

Section: Introductionmentioning

confidence: 99%

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The effect of disparity change on binocular visual evoked potential parameters elicited by convergent dynamic random-dot stereogram stimuli in humans

Şahinoğlu

2002

European Journal of Applied Physiology

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Binocular visual evoked potentials (VEP) were recorded from the left and right occipital cortices of right-handed subjects in response to six different levels of convergent disparity using the stimulus of dynamic random-dot stereogram (DRDS). The VEP obtained consisted of a negative (N1) and a positive peak (P1) within intervals of 200-400 ms and 400-600 ms, respectively. The latency of the N1 wave decreased with disparity and the amplitude of the same wave displayed a concave-down curve. The tuning-curve of N1 showed that the cortical focus, which produced this wave, was sensitive to mid-disparities. The fact that the tuning-curve of the right hemisphere was sharper than that of the left implied that the right hemisphere was more disparity-selective. In contrast to N1, the change of the latency and the amplitude of the P1 with disparity consisted of concave-up curves. The inverse correlation between the amplitudes of N1 and P1 with disparity made me think that the activation of the neuron population, which gave rise to N1 wave, changed the synchronization level of the cortical focus responsible for the P1 wave. If we keep in mind that the perception of depth is the result of the disparity detection, then we may conclude that N1 is related to disparity detection and P1 is the electrophysiological correlate of a depth percept.

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Investigating the neural activity of various 3D visual fatigue degrees using depth‐related visual evoked potentials

Kang

Wang

2020

J Soc Info Display

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Severe visual fatigue symptoms occur while users view three‐dimensional (3D) content. These symptoms adversely affect the user experience and hinder the widespread application of 3D media. Existing studies mainly used electroencephalography (EEG) power (based on frequency domain analysis) to evaluate 3D visual fatigue (3DVF), but their results were often contradictory and confusing. To address this problem, we investigated the relationship between EEG features and visual fatigue from the perspective of both time and time‐frequency domain. Random‐dot stereograms (RDS) with various disparities were employed to elicit depth‐related visual evoked potentials (VEPs). The experiment lasted about 27 min for each subject to induce fatigue, and the EEG was recorded synchronously. VEPs of different fatigue levels were processed to extract both time (such as P120 and N170 components in VEPs) and time‐frequency (like event‐related spectral perturbation [ERSP]) domain characteristics. A significant increase in P120 amplitude was observed in the parietal region, and time‐frequency analysis also revealed a significant ERSP decrease of theta bands in the central‐frontal region with a latency of 200 to 300 ms when subjects suffered fatigue. Our results confirm the hypothesis that activity of theta decreased with 3DVF level, or rather, we found ERSPs of theta bands on FC4 and Cz in the 200‐ to 300‐ms window decreased significantly across four fatigue levels. Furthermore, we first reported the relationship between P120 amplitude and 3DVF, which implied this feature could be considered as a feature of 3DVF evaluation. In summary, our studies could provide a new insight for 3DVF evaluation using EEG.

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Topographical study of stereo-related potentials

Cited by 7 publications

References 8 publications

Depth-related visually evoked potentials by dynamic random-dot stereograms in humans: negative correlation between the peaks elicited by convergent and divergent disparities

Depth-related visually evoked potentials by dynamic random-dot stereograms in humans: negative correlation between the peaks elicited by convergent and divergent disparities

The effect of disparity change on binocular visual evoked potential parameters elicited by convergent dynamic random-dot stereogram stimuli in humans

Investigating the neural activity of various 3D visual fatigue degrees using depth‐related visual evoked potentials

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