ArticleEuropean journal of investigation in health, psychology and education2020
Cortical Contrast Processing in Retinitis Pigmentosa: Evidence of PVEPs Spatial Functions.
Article in European journal of investigation in health, psychology and education, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 2 citations in OpenAlex.
- Adaptive changes in the visual cortex after photoreceptor degeneration in retinitis pigmentosa.Histology and histopathology · 2025Review
- The detrimental effects of progression of retinal degeneration in the visual cortex.Frontiers in cellular neuroscience · 2022Review
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3 authors at 2 institutions in 1 country.
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Abstract
objectiveTo study the effect of check width size of the stimuli on the amplitude and latency of the P100 component of visual evoked potentials recorded in patients with retinitis pigmentosa (RP).
methodsPattern reversal visual evoked potentials (PVEPs) were recorded in 16 RP patients and 20 visually normal subjects. Pattern reversal stimuli with five different check widths and 100% of contrast were projected in the right eye of both patients and control subjects. PVEPs induced by stimuli with 78%, 16%, and 6% of contrast were also recorded in 10 of the control subjects.
resultsIn RP patients, the amplitude of P100 was smaller than controls in all check sized used and the peak P100 amplitude was obtained with a larger check width than in controls. P100 was also delayed in RP patients in all check sizes studied. The P100 amplitude- and latency-check size functions of RP patients were like those found in control subjects with low contrast stimuli of 16% and 6%.
conclusionThe PVEPs spatial functions of RP patients show quantitative and qualitative changes, suggesting disease induced alteration in the neural processing of stimulus contrast.
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