Effect of luminance on the visually-evoked potential in visually-normal individuals and in mTBI/concussion
| Autor: | Kenneth J. Ciuffreda, Naveen K. Yadav, Vanessa Fimreite |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
education.field_of_study genetic structures business.industry Traumatic brain injury Population Neuroscience (miscellaneous) Audiology medicine.disease Luminance Article Concussion Developmental and Educational Psychology Medicine Neurology (clinical) Evoked potential business education Neutral density filter |
| Zdroj: | Brain Inj |
| ISSN: | 1362-301X |
| Popis: | PURPOSE: To assess quantitatively the effect of luminance on VEP amplitude and latency in visually-normals (VN) and patients with mild traumatic brain injury (mTBI). METHODS: VN individuals (n = 20) and those with mTBI (n = 19) participated. Those with mTBI were assessed 1–10 years post-injury (mean = 4.97 years), with the exception of one subject. Pattern VEP testing was employed using the DIOPSYS™ NOVA–TR system, with a 74 cd m(−2) baseline luminance. Luminance levels were reduced with five different neutral density (ND) filters (0.5, 1.0, 1.5, 2.0 and 2.5) and compared to the baseline response. All testing was performed under binocular-viewing conditions with full refractive correction in place. RESULTS: In both groups, mean VEP amplitude reduced with decrease in luminance (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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