DOCTORS'
Medical Case Studies
DOCTORS'
Medical Case Studies
Evoked potentials
Evoked potential
An evoked potential (or "evoked response") is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography (EEG) or electromyography (EMG). Evoked potential amplitudes tend to be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to a volt for ECG. To resolve these low-amplitude potentials against the background of ongoing EEG, ECG, EMG and other biological signals and ambient noise, signal averaging is usually required...
Evoked potentials - List of case studies
- Visual disturbances of unknown etiology
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carried out, suggest an organic origin. An ERG-visual evoked potentials exam should also be considered. The appearance of headache also in ...
- Inflammatory Demyelinizing Disease
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of the classic centrocecal scotosis; the VEP (Visual Evoked Potentials) , in particular the P100, slightly increased in the right eye and ...
- Neurofibromatosis type 1 - Ophthalmologic Exam is recommended
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right temporal arachnoid cyst, and optic glioma. Visual evoked potentials showed evidence of bilateral functional deficit. ...
- Road accident victim suffering paralysis – Post-Traumatic C7 asia B tetraplegia
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level. A neurophysiologic exam with somatic-sensory evoked potentials produced by a stimulus in the lower limbs did not show cortical ...
- Motor Neuropathy – additional opinion
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<5 Evoked potentials (08/08 only conclusions): Negative SEP and MEP ... examinations, CSF analysis, ANA, IgG subclasses, CPK, Evoked potentials, EMG, MR (brain / overall rachis), Lyme serologies, ...
- Multiple Sclerosis_1
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matter lesions, one of them contrast-enhancing. Sensory evoked potentials showed a bilateral increase in latency. Multiple sclerosis was ...
- Cluster headache
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a neurological examination, carrying out examinations ( evoked potentials , blood tests but no CSF tests ) that have excluded a ...
- Motor Neuropathy
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<5 Evoked potentials (08/08 only conclusions): Negative SEP and MEP ... examinations, CSF analysis, ANA, IgG subclasses, CPK, Evoked potentials, EMG, MR (brain / overall rachis), IgM serology , ...
- List of Examinations
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Auditory brainstem response (ABR) Auditory evoked potential Auto-antibody asset Autoantibodies ... MRI Brain magnetic resonance (MRI) Brainstem evoked response audiometry (BERA) test Brca Brca1 Brca2 ... visit ER (Estrogen receptor) ERG-visual evoked potentials ERS ESR ESR (ErythroSedimentation EUS EUS ...
- Multiple Sclerosis_2
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matter lesions, one of them contrast-enhancing. Sensory evoked potentials showed a bilateral increase in latency. Multiple sclerosis was ...