Response of the SFA units as a function of spatial frequency of sinusoidal gratings.
Response of the SFA units to sinusoidal gratings depicted as a function of the gratings' spatial frequency and orientation. Warm (cold) colors indicate excitatory (inhibitory) response. The results are qualitatively similar to those obtained for V1 neurons in macaque monkeys (see for example Figure 2 in Ringach et al. (2002) ).