Context: Cognitive neuroscientists consider memory as the retention, reactivation, and reconstruction of the experience-independent internal representation. The term of internal representation implies that such definition of memory contains two components: the expression of memory at the behavioral or conscious level, and the underpinning physical neural changes (Dudai 2007). The latter component is also called engram or memory traces (Semon 1904). Some neuroscientists and psychologists mistakenly equate the concept of engram and memory, broadly conceiving all persisting after-effects of experiences as memory; others argue against this notion that memory does not exist until it is revealed in behavior or thought (Moscovitch 2007).

Question: What do cognitive neuroscientists believe memory is?
Answer: the retention, reactivation, and reconstruction of the experience-independent internal representation

Question: What suggests that memory has two different components?
Answer: term of internal representation

Question: What showed that memory exists even before that memory is known to the person?
Answer: Moscovitch 2007

Question: What is an engram trace?
Answer: the underpinning physical neural changes

Question: What do regular scientists believe memory is?
Answer: Unanswerable

Question: What suggests that memory has three different components?
Answer: Unanswerable

Question: What did Dudai learn in 1904?
Answer: Unanswerable

Question: What did Semon learn in 2007?
Answer: Unanswerable

Question: What did Moscovitch learn in 2006?
Answer: Unanswerable