Fig. 4: Image reconstruction by a small number of responsive neurons.
a–c Top: examples of reconstructed images from a subset of responsive cells and from all cells. First panel: stimulus images. second–forth panels: reconstructed images from a subset of or all cells. Middle and bottom: reconstruction performances (middle, R; bottom, CD) plotted against the number of cells used for the reconstructions. The cells were first collected from the responsive cells (red dots) and then from the remaining cells (black dots). Horizontal lines: the performance from all cells. Vertical lines: the number of cells required for peak performance among all responsive cells. d, e Average performance curve (d R; e CD) plotted against the number of cells. Thick and thin lines indicate the means and the means ± S.E.M, respectively. f The contributions of the top 16 responsive cells to the image reconstruction shown in a. Top: reverse filters multiplied by the visual responses. Bottom: reconstructed images. g, h Left: median performances (g R; h CD) obtained from all cells (All), responsive cells (Resp.) and cells with peak performance (Max.). Right: the number of cells used for the reconstruction. (g left) p = 5.4 × 10−5 for Max. vs. Resp.; p = 1.2 × 10−4 for Resp. vs. All; p = 6.2 × 10−5 for Max. vs. All. (g right) p = 5.4 × 10−5. (h left) p = 5.4 × 10−5 for Max. vs. Resp.; p = 3.3 × 10−4 for Resp. vs. All; p = 1.3 × 10−4 for Max. vs. All. (h right) p = 1.7 × 10−5 using the signed-rank test. Each line indicates data for each plane, and bars indicate medians. Data for images that had at least ten responsive cells were used. i–k Weight overlap (i.e., features) between the cells that responded to the same image. i Schematic of the analysis. j Percentages of overlapping features for all-cell pairs responding to the same image. k The median percentages of overlapping features for all planes. Each dot indicates the median in each plane. d, e, g, h, k N = 24 planes. The stimulus images in a–c are adapted from the databases in ref. 56 and with permission. Source data are provided as a Source Data file.
