Itzhak refers to these cells as concept neurons. We try not to anthropomorphize them, to avoid the temptation to call them “Jennifer Aniston cells” (the cells don’t like it when you do that!). Each cell, together with its sisters—for there are likely thousands of such cells in the medial temporal lobe for any one idea—encodes a concept, such as Jennifer Aniston, no matter whether the patient sees or hears her name, looks at her picture, or imagines her. Think of them as the cellular substrate of the Platonic Ideal of Jennifer Aniston. Whether the actress is sitting or running, whether her hair
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