Scalp response topography to dynamic random dot stereograms

Neill, R.A.; Fenelon, B.

doi:10.1016/0013-4694(88)90130-7

Cited by 16 publications

(11 citation statements)

References 9 publications

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“…Neill and Fenelon [15] presented the scalp electrical potential distribution in response to centrally viewed DRDSs. The VEPs they described presented a main negative focus at 120-220 ms after stimulus onset.…”

Section: Introductionmentioning

confidence: 99%

“…The authors claimed that this negative focus was of a lower amplitude than they expected, and they explained the relatively small magnitude to be the product of the major generators of the stereoscopic VEP lying within V1. [15] proposal that the electrical cortical generators of the main negative component of their stereoscopic VEPs were electrically opposed. Such an arrangement would result in relatively large cortical electrical activity producing only relatively small scalp VEP amplitudes.…”

Section: Introductionmentioning

confidence: 99%

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Detection duration thresholds and evoked potential measures of stereosensitivity

et al. 1992

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Visual evoked potentials have been proposed by some researchers to be more useful than behavioral techniques to evaluate stereo performance in children and certain clinical populations. Stimulus duration detection thresholds, visual evoked potentials, and scalp electrical potential distribution maps to dynamic random dot stereograms were studied. A high degree of correspondence was found between visual evoked potential amplitudes and behaviorally determined detection thresholds. Upper field stimuli had higher detection thresholds and generated lower-amplitude visual evoked potential responses than did centrally presented stimuli. For the most eccentrically presented stimuli, lower detection thresholds were found for stimuli presented in the right visual field than the left visual field. This finding was consistent with the pattern of VEP responses to be lateralized, with higher-amplitude responses recorded over left-hemisphere sites. The study examined a proposal that the major negative component of the stereoscopic visual evoked potential originates in cortical area V1. The results failed to support the proposal and were consistent with the main negative component of the VEP being generated in V2, rather than V1.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detection duration thresholds and evoked potential measures of stereosensitivity

et al. 1992

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“…It is not true, however, that binocular vision processing following local disparity detection is restricted to the post-parietal area. There is a study that emphasizes the role of the post-temporal area rather than that of the post-parietal area [17].…”

Section: Framework Of Binocular Vision Mechanismmentioning

confidence: 98%

“…According to past studies [5,17], the VEP for the RDS exhibits the following process. A negative potential is produced first, being localized in the occipital area, then expands to the frontal area including the occipital area.…”

Section: Effect Of Presentation Positionmentioning

confidence: 98%

“…Examining the topography when the RDS is presented, we find that a negative potential is produced first in the occipital area, and then the response spreads to the frontal area [5,17]. Figure 3 is an example of a VEP waveform derived from the electrodes at the right occipital area (O2) and the postparietal area (Pz) when an RDS with cross disparity (-36.3′) is presented.…”

Section: Effect Of Presentation Positionmentioning

confidence: 99%

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Probing the neural mechanism of binocular information processing with VEPs

Hayashi

Miyawaki

Maeda

et al. 2003

Electron Comm Jpn Pt II

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SUMMARYWe analyze the binocular stereo-vision process, and the visual evoked potential (VEP) is examined for the case in which a random-dot stereogram (RDS) is presented. In this study, three experimental parameters are considered, namely, stimulus presentation position, disparity, and correlation between binocular images. The analysis is based on the change of VEP latency, and the relation between the binocular stereo-vision process and the binocular competition process is investigated. The VEP waveform for RDS presentation is divided into three main components. The first component is the initial vision response, observed to be localized in the occipital area, which is considered to reflect the local disparity detection process. The second and third components are responses with middle to long latency spreading from the occipital area to the frontal areas, and the latency greatly depends on the presentation position and the disparity. The latency is shorter when the presentation is at the center than at the periphery of the view field, and is shorter for crossed disparity than for uncrossed disparity. The difference of latency seems to reflect the processing mechanisms for the presentation position and the disparity. In an experiment using the RDS with the contrast reversed between two eyes (anti-RDS), the latency is longer for crossed disparity than for uncrossed disparity, which is the reverse of the case of RDS. This phenomenon can be accounted for by the response of the disparity-selective neuron in V1, which suggests that both binocular stereo vision and binocular competition are based on the local disparity detection mechanism as the neural basis. The response of the disparity-selective neuron is simulated using the binocular energy model, and the difference between the two kinds of binocular vision processing. A mechanism that detects the unpairedness between the two eyes is proposed.

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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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Scalp response topography to dynamic random dot stereograms

Cited by 16 publications

References 9 publications

Detection duration thresholds and evoked potential measures of stereosensitivity

Detection duration thresholds and evoked potential measures of stereosensitivity

Probing the neural mechanism of binocular information processing with VEPs

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

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