A famous case of Claparede’s is often cited in this connection. Claparede concealed a pin in his hand when he greeted the patient, pricking her hand as he shook it. When he next attempted to greet the patient, she withdrew her hand, even though she had no conscious recollection of ever having met Claparede before. The event of the meeting had disappeared from her memory, but its effect remained. This is an example of the dissociation between episodic and procedural memory. When asked why she refused to take Claparede’s hand, the patient explained that “one has the right to withdraw one’s hand” thereby demonstrating the dissociation between episodic and semantic memory. She know what to do (procedural memory), and she recalled relevant abstract facts (semantic memory), but she was unable to bring the appropriate actual experience (episodic memory) back to mind.
Mark Solms – The Brain and the Inner World: An Introduction to the Neuroscience of the Subjective Experience p.164