We discussed the cellular and molecular bases for memory in chapter 23. The focus in this chapter is on observations that give inside into the broader organization of human memory. Procedural memory , on the other hand, is not available to the conscious mind, at least not in any detail. Riding a bicycle, and memories involving other skills. In this, memory is categorized according to the time after it was delivered.
Immediate memory is the routine ability to hold and experience in mind for a few seconds.
Short-term Memory , is the ability to hold information in mind for periods of seconds to minutes. A conventional way of testing short term memory is to present a string of digits, which the subject is then asked to repeat. A special sort of short term memory is called working memory , it is the ability to hold thing in mind long enough to carryout sequential actions. Long-term memory , is the retention of information, for days, weeks, or even a lifetime. It is associated with the term engram , which refers to the physical embodiment of the memory in neural machinery.