THE RELATIONSHIP OF VISUAL EVOKED POTENTIALS TO CORTICAL PHYSIOLOGY
نویسندگان
چکیده
منابع مشابه
The relationship of visual evoked potentials to cortical physiology.
The last 15 years have seen a rapid expansion in studies on human visual evoked potentials (VEP), both a t the fundamental and at the clinical level. A wide variety of stimulus conditions have been explored,’ new types of mathematical tools have been i n t r o d ~ c e d , ~ . ~ and there has been an increasing appreciation of possible VEP correlates with underlying physiological mechanisms! Var...
متن کاملThe Effect of Oral Verapamil on the Visual Evoked Potentials in Definite Multiple Sclerosis Patients
Introduction: Ionic channel rearrangements through the demyelinated axons or supporting media play significant role in remission of the neurological deficit in MS patients. In this study the effects of Verapamil as a calcium channel blocker on central conduction have been investigated through the evaluation of changes in P100 latency of the visual evoked potential. Method: This randomized doubl...
متن کاملVisual and somatosensory evoked cortical potentials in multiple sclerosis.
The diagnostic value of the pattern reversal evoked cortical potential (VEP) and the somatosensory evoked cortical potential (SEP) has been compared in 50 patients with established or suspected multiple sclerosis. A prolonged latency of VEP was found in 96% of definite cases of multiple sclerosis, 58% of probable cases, and 20% of possible cases. A prolonged latency of SEP by stimulation of med...
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 کاملThe Relationship and Underlying Neuronal Activities of Cortical and Thalamic Visual Evoked Potentials of Sleeping and Waking
Flash evoked thalamic field potentials recorded from the lateral geniculate nucleus are compared with corresponding potentials recorded from the surface of the visual cortex. The high similarities in waveforms and temporal characteristics between these potentials, together with an identical modulation by the state of vigilance, supports the assumption that cortical evoked potentials are primari...
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: Annals of the New York Academy of Sciences
سال: 1982
ISSN: 0077-8923,1749-6632
DOI: 10.1111/j.1749-6632.1982.tb50782.x