Fact of Memory???

Question

What is the fact of Chemicals which make memories?

Answer 1

Fact of memory. I don't really know what you are asking, but basically learning and memory occurs because of Long-term potentiations. It is a strengthening of synaptic clefts. They aren't entirely sure what makes short-term memory become stored in our long-term memory, but REM sleep plays a factor in it, and so does LTP.

Here is what Wikipedia has on it:

Long-term memory (LTM) is memory, stored as meaning, that can last as little as 30 seconds or as long as decades. It differs structurally and functionally from working memory or short-term memory, which ostensibly stores items for only around 30 seconds. Biologically, short-term memory is a temporary potentiation of neural connections that can become long-term memory through the process of rehearsal and meaningful association. The proposed mechanism by which short-term memories move into LTM storage is via long-term potentiation, which leads to a physical change in the structure of neurons. Notably, the time scale involved at each level of memory processing remains under investigation.

As long-term memory is subject to fading in the natural forgetting process, several recalls/retrievals of memory may be needed for long-term memories to last for years, dependent also on the depth of processing. Individual retrievals can take place in increasing intervals in accordance with the principle of spaced repetition. This can happen quite naturally through reflection or deliberate recall, often dependent on the perceived importance of the material.

Some theories consider sleep to be an important factor in establishing well-organized long-term memories. (See also sleep and learning.)

According to the theory of Tarnow, long term memories are stored in dream format (reminiscent of the Penfield & Rasmussen’s findings that electrical excitations of cortex give rise to experiences similar to dreams). During waking life an executive function interprets long term memory consistent with reality checking. At this point in time, this is not considered a generally accepted theory.

Long-term Potentiation:
In neuroscience, long-term potentiation (LTP) is the long-lasting enhancement in efficacy of the synapse between two neurons. Though its biological mechanisms have not yet been fully determined, LTP is believed to contribute to synaptic plasticity in living animals, providing the foundation for a highly adaptable nervous system. Most neuroscientific learning theories regard long-term potentiation and its opposing process, long-term depression, as the cellular basis of learning and memory.

Experimentally, a series of short, high-frequency electric stimulations to a nerve cell synapse can strengthen, or potentiate, that synapse for minutes to hours. In living cells, LTP occurs naturally and can last from hours to days, months, and years.

Answer 2

Psychologists and physiologists believe that memories reside in an organ located in the brain called the Hippocampus. It's somewhere in the middle, and is responsible for retaining memory. How does it work? Nobody really knows. Maybe it works similar to a computer memory where a series of switches (or chemicals) are either on or off.