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. Author manuscript; available in PMC: 2017 Aug 17.
Published in final edited form as: Neuron. 2016 Aug 4;91(4):893–904. doi: 10.1016/j.neuron.2016.07.015

Figure 4. Micro-retinotopy within maps of orientation preference.

Figure 4

Each row is data from a single imaging region. (A) Relative X and (B) Y position of each neuron’s RF (in deg of visual angle) is color-coded, with the corresponding planar fit in the top right corner. Planar fits accounted for a significant amount of the variance (F-test, p < 0.01). Scale bar at top left is 50 μm. (C) To quantify RF scatter, the residual error from the planar fits was normalized by RF size. “Relative scatter” was computed as the mean of the normalized residual error distribution. Half-height contour lines are an overlay of the RF profiles of all neurons in an imaging region. (D) Color-coded orientation preference for each neuron. (E) Micro-retinotopy versus orientation map. Each data point is computed from a pair of neurons in the imaging region. The x-axis denotes the absolute distance between the two RFs, normalized by the sum of their widths. The y-axis denotes the absolute difference in preferred orientation. The red tick mark shows the average 2σ for the orientation tuning curves. A small but significant positive correlation is observed.