In an article called “What Is an Emotion?” (1884),3 William James, the father of American psychology, reported a striking case of “sensory insensibility” in a woman he interviewed: “I have . . . no human sensations,” she told him. “[I am] surrounded by all that can render life happy and agreeable, still to me the faculty of enjoyment and of feeling is wanting. . . . Each of my senses, each part of my proper self, is as it were separated from me and can no longer afford me any feeling; this impossibility seems to depend upon a void which I feel in the front of my head, and to be due to the
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