What "traditional" methods are you referring to? Hubel and Wiesel mapped the functional anatomy of the visual cortex in the 1950s by poking at cat brains. We've

What "traditional" methods are you referring to? Hubel and Wiesel mapped the functional anatomy of the visual cortex in the 1950s by poking at cat brains. We've learned more since but their original model is still largely correct.