Visual Evoked Potentials: Normative Values and Gender Differences
نویسندگان
چکیده
منابع مشابه
Laser-evoked potentials: normative values.
OBJECTIVE Laser-evoked potentials (LEPs) currently represent the most reliable and widely agreed method of investigating the A delta-fibre pathways. Many studies dealt with the usefulness of LEPs in peripheral and central nervous system diseases. We aimed at gaining normative values for LEP data. METHODS Using a CO2 laser stimulator we recorded LEPs after face, hand, and foot stimulation in 1...
متن کاملGender differences in pattern reversal evoked potentials in normal elderly.
Pattern reversal evoked potentials (PREPS) were recorded in 51 normal elderly subjects (27 males, 24 females). Elderly females had shorter PlOO and NlSO latencies, greater P100-N150 amplitudes, and higher noise power than elderly males. The N1SO latency differences were significant even when PlOO latency effects were partialled out statistically. Gender differences in P100-Nl50 amplitude were i...
متن کاملFeature Extraction of Visual Evoked Potentials Using Wavelet Transform and Singular Value Decomposition
Introduction: Brain visual evoked potential (VEP) signals are commonly known to be accompanied by high levels of background noise typically from the spontaneous background brain activity of electroencephalography (EEG) signals. Material and Methods: A model based on dyadic filter bank, discrete wavelet transform (DWT), and singular value decomposition (SVD) was developed to analyze the raw data...
متن کاملVisual Evoked Potentials And Acupuncture
Visual evoked potentials (VEP) are of particular importance for the objectivization of organic and functional defects in the visual system. This study presents, for the first time, the use of systematic VEP-monitoring in connection with manual acupuncture and laserpuncture in 40 healthy volunteers. We were not able to find significant changes in latency or in the amplitudes of VEP ́s during acup...
متن کاملVisual evoked potentials in neurosyphilis.
The visual evoked potential (VEP) to pattern reversal was recorded in 79 patients with neurosyphilis. Sixteen patients (20%) had abnormal VEP latencies with a predominance of pathological VEP values in the group of tabes dorsalis (50%) as compared to general paresis (18%) or meningovascular forms (13%). A comparison of the frequency of abnormal VEPs with that of other ophthalmological tests (vi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH
سال: 2015
ISSN: 2249-782X
DOI: 10.7860/jcdr/2015/12764.6181