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Fig. 5. Responses to trans-ELL field stimulation. (A) Left: cell profile as a
spatial reference. Right: CSD as a pseudocolor map with field potential
recordings superimposed. (B) Selected CSD traces from A aligned with the
corresponding height in the pseudocolor map in A. These show that the stimulus
current peak (black dotted line) inverts (see arrows) somewhere between the
ganglionic and granular layers; thus, current enters the cells all along the
apical dendritic tree and leaves the cells close to the ventral pole, at the
level of the axon initial segment and the basal dendrites.