Figure 2.

(A) Autocorrelation plot of the oximetric ocular-dominance (OD) map in Figure 1. The contour map of the autocorrelation function (blue) reveals periodic pattern in the OD map. The red contour shows the profile at zero lag. The columnar spacing (distance between the center and its neighboring peak) was 720 μm; and the full width at half maximum (of the center peak) was 274 μm. (B) Picture of electrophysiological recording setup with a custom-designed linear array of microelectrodes. The spacing of eight-channel array was 410 μm (for a total distance of 2.87 mm). The array was positioned orthogonal to the OD columns (and parallel to the lunate sulcus). Scale bar: 1 mm.