| 摘要 |
<p>Two modes of stimulation, and analysis for the enhancement of local, lateral nonlinear interactions in the multi-area electroretinogram. In both modes the stimulation consists of a sequence of stimulus intervals (40) of equal size. In mode 1 each stimulus interval may contain two stimuli of the same or different type. Stimulus 1 occurs at a predetermined time within each interval (40) while stimulus occurs pseudorandom at the beginning of the intervals. The same pseudorandom stimulation is used for all stimulated areas (12) with an appropriate shift in the stimulus sequence from one area to the next. Multi-area responses are derived by cross correlating the response cycle with a sequence of the same length with values of +1 and -1 at the beginning of each stimulus interval to reflect the pseudorandom stimuli at different time points (50) within each stimulus interval.</p> |
