You insert an electrode into the visual cortex perpendicular to the cortical surface. As you record from neurons at different depths from the cortical surface, which of the following would you expect to observe?
a. Similar receptive field and tuning properties across the neurons
b. A gradual, linear change in receptive field and tuning properties across the neurons
c. Similar receptive field locations, but gradual changes in tuning across the neurons
d. A pinwheel-like change in receptive field and tuning properties across the neurons
e. Seemingly random and un-related receptive field and tuning properties across the neurons