Encyclopedia of Opinion
Question
How does memory work in the brain?
Position2 of 5
Memories are stored in multiple levels
Argument3 of 3

We store memory in our long term memory

Long term memory is the ultimate destination in the brain for information that needs to be recalled and accessed for extended periods of time.

The argument

Information that we can access and retrieve after long periods of time must be stored in the long term memory. Transfer to long term memory involves a process known as long-term potentiation. Neurons, the nerve cells in the brain, are connected through circuits known as neural networks. These networks represent complex information storage and brain function. When information is used or repeated consistently or many times, these neural networks are used more and more, and subsequently strengthen the more they are used, which is long-term potentiation. Long term potentiation allows information to become encoded long term by strengthening the neural networks. Long term memory can last years or a lifetime and has an immense storage capacity. Loss of information from the long term memory occurs when the neural networks cease to be used and they weaken, or when they are written over by new networks. Information is remembered better the more frequently the neural networks are strengthened, hence why repetition of information helps with memory. Long term memory can be divided into explicit (declarative) and implicit (procedural) memory. Explicit memory is the memory of specific pieces of information such as facts and events, that can be consciously recalled. It is primarily stored in the temporal cortex area of the brain.This is further divided into episodic memory, the memory of experiences or personal events, and semantic memory, the memory of impersonal facts. Implicit memory is unconscious memory of physical skills or actions such as riding a bike. These memories are primarily stored in the cerebellum and motor cortex. Another division of long term memory is by time period. Retrospective memory is the remembering of past information, such as dates, people, events, etc. Prospective memory is the remembering of future information, such as remembering to do something. Remembering that you received an award four years ago is an example of retrospective memory; remembering that you need to water the garden is an example of prospective memory. Long-term memory allows people to store important information for long periods of time.

Premises

[P1]Information retrievable after long periods is held in long-term memory via long-term potentiation, whereby repeatedly used neural networks strengthen and encode information that can last a lifetime with immense capacity. [P2] Long-term memory divides into explicit memory (facts and events, in the temporal cortex) and implicit memory (skills, in the cerebellum and motor cortex), and information is lost when networks weaken from disuse or are overwritten. [C] Therefore, long-term memory is one of the multiple levels at which we store memory.

Counter-arguments

Prospective memory should not be considered a part of long term memory because it is not involving past information, it should be considered more a part of cognitive functioning than a memory because it does not involve recalling or storing information.

Rejecting the premises

[Rejecting P1] Long-term potentiation is a synaptic mechanism, and the premise treats it as an account of storage; the durability and capacity claims describe what long-term memory does rather than establishing that memory is organised in distinct levels. [Rejecting P2] The explicit/implicit taxonomy with its different regions does support the position, but the same evidence serves the sibling position about encoding equally well — and the counter's objection that prospective memory belongs with cognitive function rather than memory shows the categories themselves are not settled.