Human cerebral potentials evoked by moving dynamic random DOT stereograms

Herpers, M.; Caberg, H.B; Mol, J.M.F.

doi:10.1016/0013-4694(81)90188-7

Cited by 18 publications

(8 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With other stereoscopic patterns, Kimura et al [24] also observed a negative wave at 180 ms but not the conventional VEP components (N75, P100, N140). Other authors [5,11] using dynamic RDS found a late negative response after 180 ms and 250 ms. An explanation of why the conventional components of the "monocular" pattern VEP are not present in the S-VEP is unclear, but stimulus conditions and positions of the recording electrodes could explain it. In several subjects, a positive onset response of variable amplitude could be found at 120 ms, followed by the negative component.…”

Section: Discussionmentioning

confidence: 95%

Stereoscopic visual evoked potentials in normal subjects and patients with open-angle glaucomas

Bergua

Horn

Martus

et al. 2003

Graefe's Arch Clin Exp Ophthalmol

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 95%

Stereoscopic visual evoked potentials in normal subjects and patients with open-angle glaucomas

Bergua

Horn

Martus

et al. 2003

Graefe's Arch Clin Exp Ophthalmol

View full text Add to dashboard Cite

show abstract

“…Published results show differences in the latencies and the number of the peaks recorded. 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).…”

Section: Introductionmentioning

confidence: 85%

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

View full text Add to dashboard Cite

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.

show abstract

“…Dynamic, as opposed to static, random dot stereograms (RDS) and stereopatterns have been used in a number of laboratories (Mol and Caberg, 1977;Herpers, Caberg and Mol, 1981;Lehmann and Julesz, 1978;Breitmeyer et al, 1974). The authors have developed a display system for RDS intended for use with orthoptic patients as well as with normals and have published a series of technical and applied evoked response studies (Neill and Fenelon, 1981 ;Neill et al, 1982;Dunlop et al, 1983;Manning, 1984a, 1984b).…”

Section: Introductionmentioning

confidence: 99%

Evoked potentials to dynamic random dot stereograms in upper, center and lower fields

1986

View full text Add to dashboard Cite

Dynamic random dot stereograms consisting of square, crossed disparities subtending 3 degrees, exposure duration 100 ms, were presented in the midplane centrally (surrounding the fixation point) and in the upper and lower fields at 3.5 degrees vertical displacement from fixation. Stereoscopic cerebral evoked potentials (EPs) recorded from scalp sites 02, 01, T6 and T5 (10-20 system) were analyzed in a group of normal young adults (N = 28). Fourteen were able to perceive and report the stereophenomenon (perceivers); the other half were unable to do so (nonperceivers). Mean response amplitudes were significantly larger to center field stimuli than to those in the upper field. Responses were larger in perceivers than nonperceivers, maximal at T5, and larger to stimuli with definite than indefinite boundaries. Peak EP latencies were shortest to lower field stimuli (243 ms) but not significantly different than to center (247 ms) or upper (253 ms) field stimuli. A separate experiment comparing EP amplitudes and latencies with crossed and uncrossed disparities of varying magnitudes confirmed greater responses to the crossed.

show abstract

Human cerebral potentials evoked by moving dynamic random DOT stereograms

Cited by 18 publications

References 9 publications

Stereoscopic visual evoked potentials in normal subjects and patients with open-angle glaucomas

Stereoscopic visual evoked potentials in normal subjects and patients with open-angle glaucomas

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

Evoked potentials to dynamic random dot stereograms in upper, center and lower fields

Contact Info

Product

Resources

About