Long-term memory (LTM) refers to people's vast storehouse of retrievable information other than perceptual and short-term memory. It usually remains dormant until activated by a particular stimulus event and is divided into a couple of components: episodic LTM, which contains individuals' personal histories, their recollections of what, when, and where events have occurred in their past; and s emantic LTM, which is individuals' storehouse of knowledge that is not time dependent. Research of episodic LTM focuses on two main categories: forgetting and remembering.

Theories of Long-Term Memory

An early theory of LTM was the perceptual moment hypothesis. This theory proposed that people encode information in 100-millisecond bundles and store them into memory as an unbroken record, a continuous loop—10 snapshots per second, 600 per minute, and more ...

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