Fig. 2
Example of spatial maps. (a) Color-coded map of response amplitudes with 2-D interpolation, illustrating the spatial distribution maps across the 16 recording channels of one rat elicited by different stimulus currents (50, 100, 150, and 200 µA). Response amplitudes are normalized to the maximum (data from a single LE animal). The regions closer to the dark-red spectrum exhibit a higher response when averaged over 10 trials, while those closer to dark blue show a lower response. (b) In the binary map, the area with a response level surpassing half of the maximal values is identified as the activated area, while the remainder is categorized as the inactivated area. The red blocks represent the activated area under retinal stimulation, and the dark blue blocks represent the inactivated areas.
