Amplitudes of visually evoked potentials to patterned stimuli: Age and sex comparisons

Marche, Judith A. La; Dobson, William R.; Cohn, Nancy; Dustman, Robert E.

doi:10.1016/0168-5597(86)90039-0

Cited by 50 publications

(17 citation statements)

References 13 publications

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“…These phase differences correspond to a latency difference of 14.4 ms for the second harmonic response and 19.2 ms for the fourth harmonic response if it is assumed that phase shifts by less than one cycle with aging. These findings are consistent with previous studies with transient stimuli [1,2,7,24,25]. The simultaneous recording of PERG and VEP indicates that the VEP phase changes are independent of the small effect of age on PERG fourth harmonic phase.…”

Section: Discussionsupporting

confidence: 82%

“…Age-related prolongation of latency and changes in amplitude of the transient pattern electroretinogram (PERG) and visual evoked response (VEP) have been demonstrated by a number of researchers [1][2][3][4][5][6][7][8]. Porciatti et al [9] studied the effect of age on the steady-state PERG and described a significantly lower amplitude and increased phase lag in the PERG of older subjects.…”

Section: Introductionmentioning

confidence: 99%

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The effects of age on steady-state pattern electroretinograms and visual evoked potentials

et al. 1991

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Steady-state pattern-reversal electroretinograms and visual evoked potentials were simultaneously recorded in two groups of young and elderly normal volunteers. The young group consisted of 23 subjects (13 women and 10 men) aged 18 to 28 years, and the elderly group consisted of 24 subjects (11 women and 13 men) aged 58 to 77 years. Stimuli were square-wave gratings ranging in spatial frequency from 0.5 to 6 c/deg and phase reversed at a frequency of 4 Hz. Pattern-reversal electroretinograms and visual evoked potentials consisted of a prominent second and a smaller fourth harmonic response. Spatial frequency-amplitude functions of the pattern-reversal electroretinogram second and fourth harmonics were similar for the young and elderly groups. The mean fourth harmonic phase was significantly shifted in elderly subjects compared with young subjects for all spatial frequencies tested. Spatial frequency tuning was observed for amplitude and phase functions of the visual evoked potential second and fourth harmonic responses for both age groups. Age had a significant effect on phase for spatial frequencies above 1.5 c/deg. Amplitude of the fourth harmonic was significantly lower for the elderly group at 1.5-4 c/deg. Phase was significantly different between groups for spatial frequencies below 3 c/deg. Our results suggest that aging influences both retinal and central visual pathways. Aging differentially affected the visual evoked potential second and fourth harmonic responses, suggesting different neuronal origins for these components.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

The effects of age on steady-state pattern electroretinograms and visual evoked potentials

et al. 1991

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“…Juel-Nielsen and Harvald [1958] also suggested that EEG tracings had a genetic basis. Using unpatterned (blank) flashes of light as eye stimulation, some authors compared visual evoked potentials (VEPs) of monozygotic (MZ) or iden tical twins, dizygotic (DZ) or fraternal twins and sets of unrelated, age-matched subjects and reported a greater degree of morphological resemblance between the VEPs of MZ twin pairs than between the VEPs of other pairs [Dustman and Beck, 1965;Osborne, 1970;Lewis et al, 1972;Dustman et al, 1977], It is well known that recently the visual evoked poten tials to pattern reversals (PRVEPs) have been much more widely used in clinical testing than flash VEPs because the PRVEPs are more reproducible over time and variability of the main peak delays, both within and between subjects, is smaller [Shearer et al, 1984], They also provide relevant and reliable information regarding the visual system probity [La Marche et al, 1986]. How ever, despite the wide acceptance of this method as being valuable in investigating the visual system, no paper has yet been published analyzing, in normal preadolescent twins, either the pattern evoked potentials in general or pattern-reversal evoked potentials in particular.…”

Section: Introductionmentioning

confidence: 99%

Pattern-Reversal Visual Evoked Potentials in Normal 7- to 15-Year-Old Twins: A Correlation Analysis

Ristanović¹,

Jovanović²,

Martinović³

1989

Neuropsychobiology

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Pattern-reversal visual evoked potentials (PRVEPs) were tested in 11 sets of monozygotic (MZ) twins and 22 sets of dizygotic (DZ) twins matched on age, sex and educational level. They ranged in age from 7 to 15 years. The PRVEPs of MZ twins exhibited a signifícantly greater degree of similarity than those of DZ twins. The peak latencies and amplitudes of PRVEP components obtained from MZ twin pairs were significantly correlated. The correlation coefficients for the peak latencies of the P2 (or P100) component were the only ones to differ significantly between the DZ twins of the same sex and DZ twins of opposite sexes. These coefficients, obtained using PRVEPs, were much greater than those obtained with flash visual evoked potentials.

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“…The majority of published studies have focused on gender differences in older children and adults (Stockard et al 1979, Erwin 1980, Shearer and Dustman 1980, Snyder et al 1981, Allison et al 1983, Cohn et al 1985, LaMarche et al 1986, Celesia et al 1987, Chu 1987, Guthkelch et al 1987, Aso et al 1988, Emmerson-Hanover et al 1994) with few studies reporting gender differences of the pattern-reversal VEP in infants. Visual and neural pathways undergo a period of rapid growth and development during the first six months of life, suggesting that this would be an optimal time to utilize the patternreversal VEP to investigate any gender differences arising during visual maturation.…”

mentioning

confidence: 99%

Pattern‐reversal visual evoked potentials in infants: gender differences during early visual maturation

Malcolm

McCulloch

Shepherd

2002

Develop Med Child Neuro

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This paper investigates gender differences in the peak latency and amplitude of the P1 component of the pattern-reversal visual evoked potential (pattern-reversal VEP) recorded in healthy term infants. Pattern-reversal VEPs in response to a series of high contrast black and white checks (check widths 120', 60', 30', 24', 12', 6') were recorded in 50 infants (20 males, 30 females) at 50 weeks post-conceptional age (PCA) and in 49 infants (22 males, 27 females) at 66 weeks PCA. Peak latency of the major component, P1, was considerably shorter in female compared with male infants. Differences in head circumference do not entirely account for the gender differences in peak latency reported here. A gender difference in P1 amplitude was not detected. These findings stress the importance of considering gender norms as well as age-matched norms when utilizing the pattern-reversal VEP in clinical investigations. Studies including a wider range of ages are clearly necessary in order to establish whether the earlier peak latencies in female infants represents a difference in the onset or rate of visual maturation

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Amplitudes of visually evoked potentials to patterned stimuli: Age and sex comparisons

Cited by 50 publications

References 13 publications

The effects of age on steady-state pattern electroretinograms and visual evoked potentials

The effects of age on steady-state pattern electroretinograms and visual evoked potentials

Pattern-Reversal Visual Evoked Potentials in Normal 7- to 15-Year-Old Twins: A Correlation Analysis

Pattern‐reversal visual evoked potentials in infants: gender differences during early visual maturation

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