BRAINWAVE recordings really can betray what a person is thinking. Patrick
Suppes of Stanford University in California recorded the brain-waves of five
volunteers as they read 100 sentences. The recordings for each volunteer were
taken over 24 sessions and then averaged to give a typical pattern for each
sentence.
Suppes then showed each volunteer the 100 sentences in a random order, and
compared their brainwaves to the patterns recorded before. For one volunteer, he
correctly identified 93 per cent of the sentences. His worst result, identifying
9 per cent of the sentences, was still significantly better than guessing.
