Cover Picture: A contour map showing the relationship between EPSP amplitudes and the two immediately preceding interspike intervals. Data were obtained in a dual intracellular recording from two synaptically connected layer 6 cortico-thalamic pyramidal cells in rat visual cortex. Individual points contributing to the plot are superimposed as a 2 dimensional plot of the first and second intervals. See West et al., pp. 200–211.
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