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. 2015 Apr 8;10(4):e0124917. doi: 10.1371/journal.pone.0124917

Fig 2. Topographic maps activated from four monitor positions demonstrating frontolateral extent of visual field representation (bird1).

Fig 2

Activation in the left visual wulst was induced by visual stimulation of the right eye with moving vertical and horizontal bars in fronto-lateral visual-field. Colour coded polar maps of azimuth (A-D) and elevation (I-L) and grey-scale coded activity maps (E-H and M-P) recorded when the bird was visually stimulated from four different monitor positions (0°, 30°, 60°, 90°) in the fronto-lateral visual field are illustrated. The colour codes for the azimuth maps (A-D) are given above the corresponding map and for the elevation maps (I-L) on the left side of Fig 2I. Each tic on the colour scale represents 10 degrees of visual field. Wulst activation is displayed as fractional change in reflection ×10-4: Darker grey indicates higher wulst activation. To allow direct comparison, the grey scale at the bottom of M applies to all illustrated activity maps. The magnitude of activation is additionally shown as a number in the upper right corner of each activity map. A scheme of the visual stimuli and the approximate location of the imaged wulst area are shown on the left side of the figure. Scale bar = 500 μm.