Patent ID: 8128227
Filing Date: 2012-03-06
Classification: A61B

Abstract:
1. A method for screening transmissible spongiform encephalopathy in livestock of the genus Bos via an electroretinogram, the method comprising: arranging electroretinogram electrodes on the eye of the livestock, producing and recording from said electrodes a biphasic electroretinogram waveform having an a-wave and b-wave from livestock retina in response to photic stimulus under scotopic conditions, measuring the amplitude of the b-wave, wherein the amplitude is measured from the trough of the a-wave to the peak of the b-wave, measuring the implicit time of the b-wave, wherein the implicit time is measured from onset of photic stimulus to b-wave peak, comparing said recorded waveform to a comparative waveform of livestock of the genus determining whether the recorded waveform has a decreased b-wave amplitude of approximately 22 percent to approximately 24 percent less than the comparative waveform or an increased b-wave implicit time of approximately 23 percent to approximately 34 percent greater than the comparative waveform, wherein a decreased b-wave amplitude or increased b-wave implicit time is indicative of the screened