Hubel and Wiesel: Feature Detectors and the Nobel Prize
	In the early 1960’s H and W started research using microelectrode recording of axons in the primary visual cortex of animals. Initially, they had little success getting neurons to fire by having the cats look at flashing spots of light. Accidentally, they introduced a straight line light. Rapid firing occurred in the visual cortex.  They went on to discover that the visual cortex has feature detectors in it, neurons that respond selectively to very specific features of complex stimuli (lines, edges, etc.).
	This was groundbreaking research, which won them the Nobel Prize in 1981.
	Later research has demonstrated that there are cells in the temporal lobes of monkeys and humans (along the visual pathway) that specifically respond to pictures of faces, known as grandmother cells.