What do cells within a column of the visual cortex have in common? a. They all have action potentials of the same amplitude and velocity. b. They are all the same shape. c. They are all simple cells,...

What do cells within a column of the visual cortex have in common? a. They all have action potentials of the same amplitude and velocity. b. They are all the same shape. c. They are all simple cells, as opposed to complex cells. d. They respond best to lines in the same orientation.