Lawrence Weiskrantz recorded this phenomenon in Daniel, who had suffered an injury to V1, the striate cortex, as a result of an operation to cure headaches. For 10 points each:
[10m] Name this phenomenon demonstrated by the monkey Helen. This phenomenon allowed Patient TN to walk down an obstacle-filled hallway without using his cane.
ANSWER: blindsight [accept Riddoch syndrome]
[10h] This scientist and Lawrence Weiskrantz first documented how the monkey Helen could use blindsight to navigate, which influenced the theories of consciousness in his books Sentience and A History of the Mind.
ANSWER: Nicholas K. Humphrey
[10e] These medical events are a common cause of blindsight, since they often leave normal vision in one half of the visual field. The mnemonic F.A.S.T. lists symptoms of these events, such as speech difficulty.
ANSWER: strokes
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